diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 08:47:12 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-04 08:47:12 -0700 |
| commit | b05d59dfceaea72565b1648af929b037b0f96d7f (patch) | |
| tree | bbe92714be468ed8783bce6ac2c305c0aedf8eb5 /arch/powerpc/kvm | |
| parent | daf342af2f7856fd2f5c66b9fb39a8f24986ca53 (diff) | |
| parent | 820b3fcdeb80d30410f4427d2cbf9161c35fdeef (diff) | |
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm into next
Pull KVM updates from Paolo Bonzini:
"At over 200 commits, covering almost all supported architectures, this
was a pretty active cycle for KVM. Changes include:
- a lot of s390 changes: optimizations, support for migration, GDB
support and more
- ARM changes are pretty small: support for the PSCI 0.2 hypercall
interface on both the guest and the host (the latter acked by
Catalin)
- initial POWER8 and little-endian host support
- support for running u-boot on embedded POWER targets
- pretty large changes to MIPS too, completing the userspace
interface and improving the handling of virtualized timer hardware
- for x86, a larger set of changes is scheduled for 3.17. Still, we
have a few emulator bugfixes and support for running nested
fully-virtualized Xen guests (para-virtualized Xen guests have
always worked). And some optimizations too.
The only missing architecture here is ia64. It's not a coincidence
that support for KVM on ia64 is scheduled for removal in 3.17"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (203 commits)
KVM: add missing cleanup_srcu_struct
KVM: PPC: Book3S PR: Rework SLB switching code
KVM: PPC: Book3S PR: Use SLB entry 0
KVM: PPC: Book3S HV: Fix machine check delivery to guest
KVM: PPC: Book3S HV: Work around POWER8 performance monitor bugs
KVM: PPC: Book3S HV: Make sure we don't miss dirty pages
KVM: PPC: Book3S HV: Fix dirty map for hugepages
KVM: PPC: Book3S HV: Put huge-page HPTEs in rmap chain for base address
KVM: PPC: Book3S HV: Fix check for running inside guest in global_invalidates()
KVM: PPC: Book3S: Move KVM_REG_PPC_WORT to an unused register number
KVM: PPC: Book3S: Add ONE_REG register names that were missed
KVM: PPC: Add CAP to indicate hcall fixes
KVM: PPC: MPIC: Reset IRQ source private members
KVM: PPC: Graciously fail broken LE hypercalls
PPC: ePAPR: Fix hypercall on LE guest
KVM: PPC: BOOK3S: Remove open coded make_dsisr in alignment handler
KVM: PPC: BOOK3S: Always use the saved DAR value
PPC: KVM: Make NX bit available with magic page
KVM: PPC: Disable NX for old magic page using guests
KVM: PPC: BOOK3S: HV: Add mixed page-size support for guest
...
Diffstat (limited to 'arch/powerpc/kvm')
24 files changed, 803 insertions, 332 deletions
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig index 141b2027189..d6a53b95de9 100644 --- a/arch/powerpc/kvm/Kconfig +++ b/arch/powerpc/kvm/Kconfig @@ -6,7 +6,6 @@ source "virt/kvm/Kconfig" menuconfig VIRTUALIZATION bool "Virtualization" - depends on !CPU_LITTLE_ENDIAN ---help--- Say Y here to get to see options for using your Linux host to run other operating systems inside virtual machines (guests). @@ -76,6 +75,7 @@ config KVM_BOOK3S_64 config KVM_BOOK3S_64_HV tristate "KVM support for POWER7 and PPC970 using hypervisor mode in host" depends on KVM_BOOK3S_64 + depends on !CPU_LITTLE_ENDIAN select KVM_BOOK3S_HV_POSSIBLE select MMU_NOTIFIER select CMA diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 7af190a266b..c254c27f240 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -85,9 +85,9 @@ static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, if (is_kvmppc_hv_enabled(vcpu->kvm)) return; if (pending_now) - vcpu->arch.shared->int_pending = 1; + kvmppc_set_int_pending(vcpu, 1); else if (old_pending) - vcpu->arch.shared->int_pending = 0; + kvmppc_set_int_pending(vcpu, 0); } static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) @@ -99,11 +99,11 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) if (is_kvmppc_hv_enabled(vcpu->kvm)) return false; - crit_raw = vcpu->arch.shared->critical; + crit_raw = kvmppc_get_critical(vcpu); crit_r1 = kvmppc_get_gpr(vcpu, 1); /* Truncate crit indicators in 32 bit mode */ - if (!(vcpu->arch.shared->msr & MSR_SF)) { + if (!(kvmppc_get_msr(vcpu) & MSR_SF)) { crit_raw &= 0xffffffff; crit_r1 &= 0xffffffff; } @@ -111,15 +111,15 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) /* Critical section when crit == r1 */ crit = (crit_raw == crit_r1); /* ... and we're in supervisor mode */ - crit = crit && !(vcpu->arch.shared->msr & MSR_PR); + crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR); return crit; } void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) { - vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu); - vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags; + kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu)); + kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags); kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec); vcpu->arch.mmu.reset_msr(vcpu); } @@ -145,6 +145,7 @@ static int kvmppc_book3s_vec2irqprio(unsigned int vec) case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break; case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break; case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break; + case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break; default: prio = BOOK3S_IRQPRIO_MAX; break; } @@ -225,12 +226,12 @@ int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) switch (priority) { case BOOK3S_IRQPRIO_DECREMENTER: - deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit; + deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; vec = BOOK3S_INTERRUPT_DECREMENTER; break; case BOOK3S_IRQPRIO_EXTERNAL: case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: - deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit; + deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; vec = BOOK3S_INTERRUPT_EXTERNAL; break; case BOOK3S_IRQPRIO_SYSTEM_RESET: @@ -275,6 +276,9 @@ int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR: vec = BOOK3S_INTERRUPT_PERFMON; break; + case BOOK3S_IRQPRIO_FAC_UNAVAIL: + vec = BOOK3S_INTERRUPT_FAC_UNAVAIL; + break; default: deliver = 0; printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority); @@ -343,7 +347,7 @@ pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing, { ulong mp_pa = vcpu->arch.magic_page_pa; - if (!(vcpu->arch.shared->msr & MSR_SF)) + if (!(kvmppc_get_msr(vcpu) & MSR_SF)) mp_pa = (uint32_t)mp_pa; /* Magic page override */ @@ -367,7 +371,7 @@ EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn); static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data, bool iswrite, struct kvmppc_pte *pte) { - int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR)); + int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR)); int r; if (relocated) { @@ -498,18 +502,18 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) regs->ctr = kvmppc_get_ctr(vcpu); regs->lr = kvmppc_get_lr(vcpu); regs->xer = kvmppc_get_xer(vcpu); - regs->msr = vcpu->arch.shared->msr; - regs->srr0 = vcpu->arch.shared->srr0; - regs->srr1 = vcpu->arch.shared->srr1; + regs->msr = kvmppc_get_msr(vcpu); + regs->srr0 = kvmppc_get_srr0(vcpu); + regs->srr1 = kvmppc_get_srr1(vcpu); regs->pid = vcpu->arch.pid; - regs->sprg0 = vcpu->arch.shared->sprg0; - regs->sprg1 = vcpu->arch.shared->sprg1; - regs->sprg2 = vcpu->arch.shared->sprg2; - regs->sprg3 = vcpu->arch.shared->sprg3; - regs->sprg4 = vcpu->arch.shared->sprg4; - regs->sprg5 = vcpu->arch.shared->sprg5; - regs->sprg6 = vcpu->arch.shared->sprg6; - regs->sprg7 = vcpu->arch.shared->sprg7; + regs->sprg0 = kvmppc_get_sprg0(vcpu); + regs->sprg1 = kvmppc_get_sprg1(vcpu); + regs->sprg2 = kvmppc_get_sprg2(vcpu); + regs->sprg3 = kvmppc_get_sprg3(vcpu); + regs->sprg4 = kvmppc_get_sprg4(vcpu); + regs->sprg5 = kvmppc_get_sprg5(vcpu); + regs->sprg6 = kvmppc_get_sprg6(vcpu); + regs->sprg7 = kvmppc_get_sprg7(vcpu); for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) regs->gpr[i] = kvmppc_get_gpr(vcpu, i); @@ -527,16 +531,16 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) kvmppc_set_lr(vcpu, regs->lr); kvmppc_set_xer(vcpu, regs->xer); kvmppc_set_msr(vcpu, regs->msr); - vcpu->arch.shared->srr0 = regs->srr0; - vcpu->arch.shared->srr1 = regs->srr1; - vcpu->arch.shared->sprg0 = regs->sprg0; - vcpu->arch.shared->sprg1 = regs->sprg1; - vcpu->arch.shared->sprg2 = regs->sprg2; - vcpu->arch.shared->sprg3 = regs->sprg3; - vcpu->arch.shared->sprg4 = regs->sprg4; - vcpu->arch.shared->sprg5 = regs->sprg5; - vcpu->arch.shared->sprg6 = regs->sprg6; - vcpu->arch.shared->sprg7 = regs->sprg7; + kvmppc_set_srr0(vcpu, regs->srr0); + kvmppc_set_srr1(vcpu, regs->srr1); + kvmppc_set_sprg0(vcpu, regs->sprg0); + kvmppc_set_sprg1(vcpu, regs->sprg1); + kvmppc_set_sprg2(vcpu, regs->sprg2); + kvmppc_set_sprg3(vcpu, regs->sprg3); + kvmppc_set_sprg4(vcpu, regs->sprg4); + kvmppc_set_sprg5(vcpu, regs->sprg5); + kvmppc_set_sprg6(vcpu, regs->sprg6); + kvmppc_set_sprg7(vcpu, regs->sprg7); for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) kvmppc_set_gpr(vcpu, i, regs->gpr[i]); @@ -570,10 +574,10 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) r = 0; switch (reg->id) { case KVM_REG_PPC_DAR: - val = get_reg_val(reg->id, vcpu->arch.shared->dar); + val = get_reg_val(reg->id, kvmppc_get_dar(vcpu)); break; case KVM_REG_PPC_DSISR: - val = get_reg_val(reg->id, vcpu->arch.shared->dsisr); + val = get_reg_val(reg->id, kvmppc_get_dsisr(vcpu)); break; case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: i = reg->id - KVM_REG_PPC_FPR0; @@ -627,6 +631,21 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu)); break; #endif /* CONFIG_KVM_XICS */ + case KVM_REG_PPC_FSCR: + val = get_reg_val(reg->id, vcpu->arch.fscr); + break; + case KVM_REG_PPC_TAR: + val = get_reg_val(reg->id, vcpu->arch.tar); + break; + case KVM_REG_PPC_EBBHR: + val = get_reg_val(reg->id, vcpu->arch.ebbhr); + break; + case KVM_REG_PPC_EBBRR: + val = get_reg_val(reg->id, vcpu->arch.ebbrr); + break; + case KVM_REG_PPC_BESCR: + val = get_reg_val(reg->id, vcpu->arch.bescr); + break; default: r = -EINVAL; break; @@ -660,10 +679,10 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) r = 0; switch (reg->id) { case KVM_REG_PPC_DAR: - vcpu->arch.shared->dar = set_reg_val(reg->id, val); + kvmppc_set_dar(vcpu, set_reg_val(reg->id, val)); break; case KVM_REG_PPC_DSISR: - vcpu->arch.shared->dsisr = set_reg_val(reg->id, val); + kvmppc_set_dsisr(vcpu, set_reg_val(reg->id, val)); break; case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: i = reg->id - KVM_REG_PPC_FPR0; @@ -716,6 +735,21 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) set_reg_val(reg->id, val)); break; #endif /* CONFIG_KVM_XICS */ + case KVM_REG_PPC_FSCR: + vcpu->arch.fscr = set_reg_val(reg->id, val); + break; + case KVM_REG_PPC_TAR: + vcpu->arch.tar = set_reg_val(reg->id, val); + break; + case KVM_REG_PPC_EBBHR: + vcpu->arch.ebbhr = set_reg_val(reg->id, val); + break; + case KVM_REG_PPC_EBBRR: + vcpu->arch.ebbrr = set_reg_val(reg->id, val); + break; + case KVM_REG_PPC_BESCR: + vcpu->arch.bescr = set_reg_val(reg->id, val); + break; default: r = -EINVAL; break; diff --git a/arch/powerpc/kvm/book3s_32_mmu.c b/arch/powerpc/kvm/book3s_32_mmu.c index 76a64ce6a5b..93503bbdae4 100644 --- a/arch/powerpc/kvm/book3s_32_mmu.c +++ b/arch/powerpc/kvm/book3s_32_mmu.c @@ -91,7 +91,7 @@ static int kvmppc_mmu_book3s_32_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid, static u32 find_sr(struct kvm_vcpu *vcpu, gva_t eaddr) { - return vcpu->arch.shared->sr[(eaddr >> 28) & 0xf]; + return kvmppc_get_sr(vcpu, (eaddr >> 28) & 0xf); } static u64 kvmppc_mmu_book3s_32_ea_to_vp(struct kvm_vcpu *vcpu, gva_t eaddr, @@ -131,7 +131,7 @@ static hva_t kvmppc_mmu_book3s_32_get_pteg(struct kvm_vcpu *vcpu, pteg = (vcpu_book3s->sdr1 & 0xffff0000) | hash; dprintk("MMU: pc=0x%lx eaddr=0x%lx sdr1=0x%llx pteg=0x%x vsid=0x%x\n", - kvmppc_get_pc(&vcpu_book3s->vcpu), eaddr, vcpu_book3s->sdr1, pteg, + kvmppc_get_pc(vcpu), eaddr, vcpu_book3s->sdr1, pteg, sr_vsid(sre)); r = gfn_to_hva(vcpu->kvm, pteg >> PAGE_SHIFT); @@ -160,7 +160,7 @@ static int kvmppc_mmu_book3s_32_xlate_bat(struct kvm_vcpu *vcpu, gva_t eaddr, else bat = &vcpu_book3s->ibat[i]; - if (vcpu->arch.shared->msr & MSR_PR) { + if (kvmppc_get_msr(vcpu) & MSR_PR) { if (!bat->vp) continue; } else { @@ -208,6 +208,7 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr, u32 sre; hva_t ptegp; u32 pteg[16]; + u32 pte0, pte1; u32 ptem = 0; int i; int found = 0; @@ -233,14 +234,16 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr, } for (i=0; i<16; i+=2) { - if (ptem == pteg[i]) { + pte0 = be32_to_cpu(pteg[i]); + pte1 = be32_to_cpu(pteg[i + 1]); + if (ptem == pte0) { u8 pp; - pte->raddr = (pteg[i+1] & ~(0xFFFULL)) | (eaddr & 0xFFF); - pp = pteg[i+1] & 3; + pte->raddr = (pte1 & ~(0xFFFULL)) | (eaddr & 0xFFF); + pp = pte1 & 3; - if ((sr_kp(sre) && (vcpu->arch.shared->msr & MSR_PR)) || - (sr_ks(sre) && !(vcpu->arch.shared->msr & MSR_PR))) + if ((sr_kp(sre) && (kvmppc_get_msr(vcpu) & MSR_PR)) || + (sr_ks(sre) && !(kvmppc_get_msr(vcpu) & MSR_PR))) pp |= 4; pte->may_write = false; @@ -260,7 +263,7 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr, } dprintk_pte("MMU: Found PTE -> %x %x - %x\n", - pteg[i], pteg[i+1], pp); + pte0, pte1, pp); found = 1; break; } @@ -269,8 +272,8 @@ static int kvmppc_mmu_book3s_32_xlate_pte(struct kvm_vcpu *vcpu, gva_t eaddr, /* Update PTE C and A bits, so the guest's swapper knows we used the page */ if (found) { - u32 pte_r = pteg[i+1]; - char __user *addr = (char __user *) &pteg[i+1]; + u32 pte_r = pte1; + char __user *addr = (char __user *) (ptegp + (i+1) * sizeof(u32)); /* * Use single-byte writes to update the HPTE, to @@ -296,7 +299,8 @@ no_page_found: to_book3s(vcpu)->sdr1, ptegp); for (i=0; i<16; i+=2) { dprintk_pte(" %02d: 0x%x - 0x%x (0x%x)\n", - i, pteg[i], pteg[i+1], ptem); + i, be32_to_cpu(pteg[i]), + be32_to_cpu(pteg[i+1]), ptem); } } @@ -316,7 +320,7 @@ static int kvmppc_mmu_book3s_32_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, /* Magic page override */ if (unlikely(mp_ea) && unlikely((eaddr & ~0xfffULL) == (mp_ea & ~0xfffULL)) && - !(vcpu->arch.shared->msr & MSR_PR)) { + !(kvmppc_get_msr(vcpu) & MSR_PR)) { pte->vpage = kvmppc_mmu_book3s_32_ea_to_vp(vcpu, eaddr, data); pte->raddr = vcpu->arch.magic_page_pa | (pte->raddr & 0xfff); pte->raddr &= KVM_PAM; @@ -341,13 +345,13 @@ static int kvmppc_mmu_book3s_32_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, static u32 kvmppc_mmu_book3s_32_mfsrin(struct kvm_vcpu *vcpu, u32 srnum) { - return vcpu->arch.shared->sr[srnum]; + return kvmppc_get_sr(vcpu, srnum); } static void kvmppc_mmu_book3s_32_mtsrin(struct kvm_vcpu *vcpu, u32 srnum, ulong value) { - vcpu->arch.shared->sr[srnum] = value; + kvmppc_set_sr(vcpu, srnum, value); kvmppc_mmu_map_segment(vcpu, srnum << SID_SHIFT); } @@ -367,8 +371,9 @@ static int kvmppc_mmu_book3s_32_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid, ulong ea = esid << SID_SHIFT; u32 sr; u64 gvsid = esid; + u64 msr = kvmppc_get_msr(vcpu); - if (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) { + if (msr & (MSR_DR|MSR_IR)) { sr = find_sr(vcpu, ea); if (sr_valid(sr)) gvsid = sr_vsid(sr); @@ -377,7 +382,7 @@ static int kvmppc_mmu_book3s_32_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid, /* In case we only have one of MSR_IR or MSR_DR set, let's put that in the real-mode context (and hope RM doesn't access high memory) */ - switch (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) { + switch (msr & (MSR_DR|MSR_IR)) { case 0: *vsid = VSID_REAL | esid; break; @@ -397,7 +402,7 @@ static int kvmppc_mmu_book3s_32_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid, BUG(); } - if (vcpu->arch.shared->msr & MSR_PR) + if (msr & MSR_PR) *vsid |= VSID_PR; return 0; diff --git a/arch/powerpc/kvm/book3s_32_mmu_host.c b/arch/powerpc/kvm/book3s_32_mmu_host.c index 5fac89dfe4c..678e7537049 100644 --- a/arch/powerpc/kvm/book3s_32_mmu_host.c +++ b/arch/powerpc/kvm/book3s_32_mmu_host.c @@ -92,7 +92,7 @@ static struct kvmppc_sid_map *find_sid_vsid(struct kvm_vcpu *vcpu, u64 gvsid) struct kvmppc_sid_map *map; u16 sid_map_mask; - if (vcpu->arch.shared->msr & MSR_PR) + if (kvmppc_get_msr(vcpu) & MSR_PR) gvsid |= VSID_PR; sid_map_mask = kvmppc_sid_hash(vcpu, gvsid); @@ -279,7 +279,7 @@ static struct kvmppc_sid_map *create_sid_map(struct kvm_vcpu *vcpu, u64 gvsid) u16 sid_map_mask; static int backwards_map = 0; - if (vcpu->arch.shared->msr & MSR_PR) + if (kvmppc_get_msr(vcpu) & MSR_PR) gvsid |= VSID_PR; /* We might get collisions that trap in preceding order, so let's diff --git a/arch/powerpc/kvm/book3s_64_mmu.c b/arch/powerpc/kvm/book3s_64_mmu.c index 83da1f868fd..774a253ca4e 100644 --- a/arch/powerpc/kvm/book3s_64_mmu.c +++ b/arch/powerpc/kvm/book3s_64_mmu.c @@ -38,7 +38,7 @@ static void kvmppc_mmu_book3s_64_reset_msr(struct kvm_vcpu *vcpu) { - kvmppc_set_msr(vcpu, MSR_SF); + kvmppc_set_msr(vcpu, vcpu->arch.intr_msr); } static struct kvmppc_slb *kvmppc_mmu_book3s_64_find_slbe( @@ -226,7 +226,7 @@ static int kvmppc_mmu_book3s_64_xlate(struct kvm_vcpu *vcpu, gva_t eaddr, /* Magic page override */ if (unlikely(mp_ea) && unlikely((eaddr & ~0xfffULL) == (mp_ea & ~0xfffULL)) && - !(vcpu->arch.shared->msr & MSR_PR)) { + !(kvmppc_get_msr(vcpu) & MSR_PR)) { gpte->eaddr = eaddr; gpte->vpage = kvmppc_mmu_book3s_64_ea_to_vp(vcpu, eaddr, data); gpte->raddr = vcpu->arch.magic_page_pa | (gpte->raddr & 0xfff); @@ -269,18 +269,21 @@ do_second: goto no_page_found; } - if ((vcpu->arch.shared->msr & MSR_PR) && slbe->Kp) + if ((kvmppc_get_msr(vcpu) & MSR_PR) && slbe->Kp) key = 4; - else if (!(vcpu->arch.shared->msr & MSR_PR) && slbe->Ks) + else if (!(kvmppc_get_msr(vcpu) & MSR_PR) && slbe->Ks) key = 4; for (i=0; i<16; i+=2) { + u64 pte0 = be64_to_cpu(pteg[i]); + u64 pte1 = be64_to_cpu(pteg[i + 1]); + /* Check all relevant fields of 1st dword */ - if ((pteg[i] & v_mask) == v_val) { + if ((pte0 & v_mask) == v_val) { /* If large page bit is set, check pgsize encoding */ if (slbe->large && (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE)) { - pgsize = decode_pagesize(slbe, pteg[i+1]); + pgsize = decode_pagesize(slbe, pte1); if (pgsize < 0) continue; } @@ -297,8 +300,8 @@ do_second: goto do_second; } - v = pteg[i]; - r = pteg[i+1]; + v = be64_to_cpu(pteg[i]); + r = be64_to_cpu(pteg[i+1]); pp = (r & HPTE_R_PP) | key; if (r & HPTE_R_PP0) pp |= 8; @@ -310,6 +313,9 @@ do_second: gpte->raddr = (r & HPTE_R_RPN & ~eaddr_mask) | (eaddr & eaddr_mask); gpte->page_size = pgsize; gpte->may_execute = ((r & HPTE_R_N) ? false : true); + if (unlikely(vcpu->arch.disable_kernel_nx) && + !(kvmppc_get_msr(vcpu) & MSR_PR)) + gpte->may_execute = true; gpte->may_read = false; gpte->may_write = false; @@ -342,14 +348,14 @@ do_second: * non-PAPR platforms such as mac99, and this is * what real hardware does. */ - char __user *addr = (char __user *) &pteg[i+1]; + char __user *addr = (char __user *) (ptegp + (i + 1) * sizeof(u64)); r |= HPTE_R_R; put_user(r >> 8, addr + 6); } if (iswrite && gpte->may_write && !(r & HPTE_R_C)) { /* Set the dirty flag */ /* Use a single byte write */ - char __user *addr = (char __user *) &pteg[i+1]; + char __user *addr = (char __user *) (ptegp + (i + 1) * sizeof(u64)); r |= HPTE_R_C; put_user(r, addr + 7); } @@ -479,7 +485,7 @@ static void kvmppc_mmu_book3s_64_slbia(struct kvm_vcpu *vcpu) vcpu->arch.slb[i].origv = 0; } - if (vcpu->arch.shared->msr & MSR_IR) { + if (kvmppc_get_msr(vcpu) & MSR_IR) { kvmppc_mmu_flush_segments(vcpu); kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); } @@ -563,7 +569,7 @@ static int segment_contains_magic_page(struct kvm_vcpu *vcpu, ulong esid) { ulong mp_ea = vcpu->arch.magic_page_ea; - return mp_ea && !(vcpu->arch.shared->msr & MSR_PR) && + return mp_ea && !(kvmppc_get_msr(vcpu) & MSR_PR) && (mp_ea >> SID_SHIFT) == esid; } #endif @@ -576,8 +582,9 @@ static int kvmppc_mmu_book3s_64_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid, u64 gvsid = esid; ulong mp_ea = vcpu->arch.magic_page_ea; int pagesize = MMU_PAGE_64K; + u64 msr = kvmppc_get_msr(vcpu); - if (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) { + if (msr & (MSR_DR|MSR_IR)) { slb = kvmppc_mmu_book3s_64_find_slbe(vcpu, ea); if (slb) { gvsid = slb->vsid; @@ -590,7 +597,7 @@ static int kvmppc_mmu_book3s_64_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid, } } - switch (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) { + switch (msr & (MSR_DR|MSR_IR)) { case 0: gvsid = VSID_REAL | esid; break; @@ -623,7 +630,7 @@ static int kvmppc_mmu_book3s_64_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid, gvsid |= VSID_64K; #endif - if (vcpu->arch.shared->msr & MSR_PR) + if (kvmppc_get_msr(vcpu) & MSR_PR) gvsid |= VSID_PR; *vsid = gvsid; @@ -633,7 +640,7 @@ no_slb: /* Catch magic page case */ if (unlikely(mp_ea) && unlikely(esid == (mp_ea >> SID_SHIFT)) && - !(vcpu->arch.shared->msr & MSR_PR)) { + !(kvmppc_get_msr(vcpu) & MSR_PR)) { *vsid = VSID_REAL | esid; return 0; } diff --git a/arch/powerpc/kvm/book3s_64_mmu_host.c b/arch/powerpc/kvm/book3s_64_mmu_host.c index 0d513af62bb..0ac98392f36 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_host.c +++ b/arch/powerpc/kvm/book3s_64_mmu_host.c @@ -58,7 +58,7 @@ static struct kvmppc_sid_map *find_sid_vsid(struct kvm_vcpu *vcpu, u64 gvsid) struct kvmppc_sid_map *map; u16 sid_map_mask; - if (vcpu->arch.shared->msr & MSR_PR) + if (kvmppc_get_msr(vcpu) & MSR_PR) gvsid |= VSID_PR; sid_map_mask = kvmppc_sid_hash(vcpu, gvsid); @@ -230,7 +230,7 @@ static struct kvmppc_sid_map *create_sid_map(struct kvm_vcpu *vcpu, u64 gvsid) u16 sid_map_mask; static int backwards_map = 0; - if (vcpu->arch.shared->msr & MSR_PR) + if (kvmppc_get_msr(vcpu) & MSR_PR) gvsid |= VSID_PR; /* We might get collisions that trap in preceding order, so let's @@ -271,11 +271,8 @@ static int kvmppc_mmu_next_segment(struct kvm_vcpu *vcpu, ulong esid) int found_inval = -1; int r; - if (!svcpu->slb_max) - svcpu->slb_max = 1; - /* Are we overwriting? */ - for (i = 1; i < svcpu->slb_max; i++) { + for (i = 0; i < svcpu->slb_max; i++) { if (!(svcpu->slb[i].esid & SLB_ESID_V)) found_inval = i; else if ((svcpu->slb[i].esid & ESID_MASK) == esid) { @@ -285,7 +282,7 @@ static int kvmppc_mmu_next_segment(struct kvm_vcpu *vcpu, ulong esid) } /* Found a spare entry that was invalidated before */ - if (found_inval > 0) { + if (found_inval >= 0) { r = found_inval; goto out; } @@ -359,7 +356,7 @@ void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong ea, ulong seg_size) ulong seg_mask = -seg_size; int i; - for (i = 1; i < svcpu->slb_max; i++) { + for (i = 0; i < svcpu->slb_max; i++) { if ((svcpu->slb[i].esid & SLB_ESID_V) && (svcpu->slb[i].esid & seg_mask) == ea) { /* Invalidate this entry */ @@ -373,7 +370,7 @@ void kvmppc_mmu_flush_segment(struct kvm_vcpu *vcpu, ulong ea, ulong seg_size) void kvmppc_mmu_flush_segments(struct kvm_vcpu *vcpu) { struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu); - svcpu->slb_max = 1; + svcpu->slb_max = 0; svcpu->slb[0].esid = 0; svcpu_put(svcpu); } diff --git a/arch/powerpc/kvm/book3s_64_mmu_hv.c b/arch/powerpc/kvm/book3s_64_mmu_hv.c index fb25ebc0af0..80561074078 100644 --- a/arch/powerpc/kvm/book3s_64_mmu_hv.c +++ b/arch/powerpc/kvm/book3s_64_mmu_hv.c @@ -52,7 +52,7 @@ static void kvmppc_rmap_reset(struct kvm *kvm); long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp) { - unsigned long hpt; + unsigned long hpt = 0; struct revmap_entry *rev; struct page *page = NULL; long order = KVM_DEFAULT_HPT_ORDER; @@ -64,22 +64,11 @@ long kvmppc_alloc_hpt(struct kvm *kvm, u32 *htab_orderp) } kvm->arch.hpt_cma_alloc = 0; - /* - * try first to allocate it from the kernel page allocator. - * We keep the CMA reserved for failed allocation. - */ - hpt = __get_free_pages(GFP_KERNEL | __GFP_ZERO | __GFP_REPEAT | - __GFP_NOWARN, order - PAGE_SHIFT); - - /* Next try to allocate from the preallocated pool */ - if (!hpt) { - VM_BUG_ON(order < KVM_CMA_CHUNK_ORDER); - page = kvm_alloc_hpt(1 << (order - PAGE_SHIFT)); - if (page) { - hpt = (unsigned long)pfn_to_kaddr(page_to_pfn(page)); - kvm->arch.hpt_cma_alloc = 1; - } else - --order; + VM_BUG_ON(order < KVM_CMA_CHUNK_ORDER); + page = kvm_alloc_hpt(1 << (order - PAGE_SHIFT)); + if (page) { + hpt = (unsigned long)pfn_to_kaddr(page_to_pfn(page)); + kvm->arch.hpt_cma_alloc = 1; } /* Lastly try successively smaller sizes from the page allocator */ @@ -596,6 +585,7 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, struct kvm *kvm = vcpu->kvm; unsigned long *hptep, hpte[3], r; unsigned long mmu_seq, psize, pte_size; + unsigned long gpa_base, gfn_base; unsigned long gpa, gfn, hva, pfn; struct kvm_memory_slot *memslot; unsigned long *rmap; @@ -634,7 +624,9 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, /* Translate the logical address and get the page */ psize = hpte_page_size(hpte[0], r); - gpa = (r & HPTE_R_RPN & ~(psize - 1)) | (ea & (psize - 1)); + gpa_base = r & HPTE_R_RPN & ~(psize - 1); + gfn_base = gpa_base >> PAGE_SHIFT; + gpa = gpa_base | (ea & (psize - 1)); gfn = gpa >> PAGE_SHIFT; memslot = gfn_to_memslot(kvm, gfn); @@ -646,6 +638,13 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, if (!kvm->arch.using_mmu_notifiers) return -EFAULT; /* should never get here */ + /* + * This should never happen, because of the slot_is_aligned() + * check in kvmppc_do_h_enter(). + */ + if (gfn_base < memslot->base_gfn) + return -EFAULT; + /* used to check for invalidations in progress */ mmu_seq = kvm->mmu_notifier_seq; smp_rmb(); @@ -738,7 +737,8 @@ int kvmppc_book3s_hv_page_fault(struct kvm_run *run, struct kvm_vcpu *vcpu, goto out_unlock; hpte[0] = (hpte[0] & ~HPTE_V_ABSENT) | HPTE_V_VALID; - rmap = &memslot->arch.rmap[gfn - memslot->base_gfn]; + /* Always put the HPTE in the rmap chain for the page base address */ + rmap = &memslot->arch.rmap[gfn_base - memslot->base_gfn]; lock_rmap(rmap); /* Check if we might have been invalidated; let the guest retry if so */ @@ -1060,22 +1060,33 @@ void kvm_set_spte_hva_hv(struct kvm *kvm, unsigned long hva, pte_t pte) kvm_handle_hva(kvm, hva, kvm_unmap_rmapp); } -static int kvm_test_clear_dirty(struct kvm *kvm, unsigned long *rmapp) +static int vcpus_running(struct kvm *kvm) +{ + return atomic_read(&kvm->arch.vcpus_running) != 0; +} + +/* + * Returns the number of system pages that are dirty. + * This can be more than 1 if we find a huge-page HPTE. + */ +static int kvm_test_clear_dirty_npages(struct kvm *kvm, unsigned long *rmapp) { struct revmap_entry *rev = kvm->arch.revmap; unsigned long head, i, j; + unsigned long n; + unsigned long v, r; unsigned long *hptep; - int ret = 0; + int npages_dirty = 0; retry: lock_rmap(rmapp); if (*rmapp & KVMPPC_RMAP_CHANGED) { *rmapp &= ~KVMPPC_RMAP_CHANGED; - ret = 1; + npages_dirty = 1; } if (!(*rmapp & KVMPPC_RMAP_PRESENT)) { unlock_rmap(rmapp); - return ret; + return npages_dirty; } i = head = *rmapp & KVMPPC_RMAP_INDEX; @@ -1083,7 +1094,22 @@ static int kvm_test_clear_dirty(struct kvm *kvm, unsigned long *rmapp) hptep = (unsigned long *) (kvm->arch.hpt_virt + (i << 4)); j = rev[i].forw; - if (!(hptep[1] & HPTE_R_C)) + /* + * Checking the C (changed) bit here is racy since there + * is no guarantee about when the hardware writes it back. + * If the HPTE is not writable then it is stable since the + * page can't be written to, and we would have done a tlbie + * (which forces the hardware to complete any writeback) + * when making the HPTE read-only. + * If vcpus are running then this call is racy anyway + * since the page could get dirtied subsequently, so we + * expect there to be a further call which would pick up + * any delayed C bit writeback. + * Otherwise we need to do the tlbie even if C==0 in + * order to pick up any delayed writeback of C. + */ + if (!(hptep[1] & HPTE_R_C) && + (!hpte_is_writable(hptep[1]) || vcpus_running(kvm))) continue; if (!try_lock_hpte(hptep, HPTE_V_HVLOCK)) { @@ -1095,24 +1121,33 @@ static int kvm_test_clear_dirty(struct kvm *kvm, unsigned long *rmapp) } /* Now check and modify the HPTE */ - if ((hptep[0] & HPTE_V_VALID) && (hptep[1] & HPTE_R_C)) { - /* need to make it temporarily absent to clear C */ - hptep[0] |= HPTE_V_ABSENT; - kvmppc_invalidate_hpte(kvm, hptep, i); - hptep[1] &= ~HPTE_R_C; - eieio(); - hptep[0] = (hptep[0] & ~HPTE_V_ABSENT) | HPTE_V_VALID; + if (!(hptep[0] & HPTE_V_VALID)) + continue; + + /* need to make it temporarily absent so C is stable */ + hptep[0] |= HPTE_V_ABSENT; + kvmppc_invalidate_hpte(kvm, hptep, i); + v = hptep[0]; + r = hptep[1]; + if (r & HPTE_R_C) { + hptep[1] = r & ~HPTE_R_C; if (!(rev[i].guest_rpte & HPTE_R_C)) { rev[i].guest_rpte |= HPTE_R_C; note_hpte_modification(kvm, &rev[i]); } - ret = 1; + n = hpte_page_size(v, r); + n = (n + PAGE_SIZE - 1) >> PAGE_SHIFT; + if (n > npages_dirty) + npages_dirty = n; + eieio(); } - hptep[0] &= ~HPTE_V_HVLOCK; + v &= ~(HPTE_V_ABSENT | HPTE_V_HVLOCK); + v |= HPTE_V_VALID; + hptep[0] = v; } while ((i = j) != head); unlock_rmap(rmapp); - return ret; + return npages_dirty; } static void harvest_vpa_dirty(struct kvmppc_vpa *vpa, @@ -1136,15 +1171,22 @@ static void harvest_vpa_dirty(struct kvmppc_vpa *vpa, long kvmppc_hv_get_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot, unsigned long *map) { - unsigned long i; + unsigned long i, j; unsigned long *rmapp; struct kvm_vcpu *vcpu; preempt_disable(); rmapp = memslot->arch.rmap; for (i = 0; i < memslot->npages; ++i) { - if (kvm_test_clear_dirty(kvm, rmapp) && map) - __set_bit_le(i, map); + int npages = kvm_test_clear_dirty_npages(kvm, rmapp); + /* + * Note that if npages > 0 then i must be a multiple of npages, + * since we always put huge-page HPTEs in the rmap chain + * corresponding to their page base address. + */ + if (npages && map) + for (j = i; npages; ++j, --npages) + __set_bit_le(j, map); ++rmapp; } diff --git a/arch/powerpc/kvm/book3s_64_slb.S b/arch/powerpc/kvm/book3s_64_slb.S index 4f12e8f0c71..3589c4e3d49 100644 --- a/arch/powerpc/kvm/book3s_64_slb.S +++ b/arch/powerpc/kvm/book3s_64_slb.S @@ -17,30 +17,9 @@ * Authors: Alexander Graf <agraf@suse.de> */ -#ifdef __LITTLE_ENDIAN__ -#error Need to fix SLB shadow accesses in little endian mode -#endif - -#define SHADOW_SLB_ESID(num) (SLBSHADOW_SAVEAREA + (num * 0x10)) -#define SHADOW_SLB_VSID(num) (SLBSHADOW_SAVEAREA + (num * 0x10) + 0x8) -#define UNBOLT_SLB_ENTRY(num) \ - ld r9, SHADOW_SLB_ESID(num)(r12); \ - /* Invalid? Skip. */; \ - rldicl. r0, r9, 37, 63; \ - beq slb_entry_skip_ ## num; \ - xoris r9, r9, SLB_ESID_V@h; \ - std r9, SHADOW_SLB_ESID(num)(r12); \ - slb_entry_skip_ ## num: - -#define REBOLT_SLB_ENTRY(num) \ - ld r10, SHADOW_SLB_ESID(num)(r11); \ - cmpdi r10, 0; \ - beq slb_exit_skip_ ## num; \ - oris r10, r10, SLB_ESID_V@h; \ - ld r9, SHADOW_SLB_VSID(num)(r11); \ - slbmte r9, r10; \ - std r10, SHADOW_SLB_ESID(num)(r11); \ -slb_exit_skip_ ## num: +#define SHADOW_SLB_ENTRY_LEN 0x10 +#define OFFSET_ESID(x) (SHADOW_SLB_ENTRY_LEN * x) +#define OFFSET_VSID(x) ((SHADOW_SLB_ENTRY_LEN * x) + 8) /****************************************************************************** * * @@ -64,20 +43,15 @@ slb_exit_skip_ ## num: * SVCPU[LR] = guest LR */ - /* Remove LPAR shadow entries */ +BEGIN_FW_FTR_SECTION -#if SLB_NUM_BOLTED == 3 + /* Declare SLB shadow as 0 entries big */ - ld r12, PACA_SLBSHADOWPTR(r13) + ld r11, PACA_SLBSHADOWPTR(r13) + li r8, 0 + stb r8, 3(r11) - /* Remove bolted entries */ - UNBOLT_SLB_ENTRY(0) - UNBOLT_SLB_ENTRY(1) - UNBOLT_SLB_ENTRY(2) - -#else -#error unknown number of bolted entries -#endif +END_FW_FTR_SECTION_IFSET(FW_FEATURE_LPAR) /* Flush SLB */ @@ -100,7 +74,7 @@ slb_loop_enter: ld r10, 0(r11) - rldicl. r0, r10, 37, 63 + andis. r9, r10, SLB_ESID_V@h beq slb_loop_enter_skip ld r9, 8(r11) @@ -137,23 +111,42 @@ slb_do_enter: * */ - /* Restore bolted entries from the shadow and fix it along the way */ + /* Remove all SLB entries that are in use. */ - /* We don't store anything in entry 0, so we don't need to take care of it */ + li r0, r0 + slbmte r0, r0 slbia - isync -#if SLB_NUM_BOLTED == 3 + /* Restore bolted entries from the shadow */ ld r11, PACA_SLBSHADOWPTR(r13) - REBOLT_SLB_ENTRY(0) - REBOLT_SLB_ENTRY(1) - REBOLT_SLB_ENTRY(2) - -#else -#error unknown number of bolted entries -#endif +BEGIN_FW_FTR_SECTION + + /* Declare SLB shadow as SLB_NUM_BOLTED entries big */ + + li r8, SLB_NUM_BOLTED + stb r8, 3(r11) + +END_FW_FTR_SECTION_IFSET(FW_FEATURE_LPAR) + + /* Manually load all entries from shadow SLB */ + + li r8, SLBSHADOW_SAVEAREA + li r7, SLBSHADOW_SAVEAREA + 8 + + .rept SLB_NUM_BOLTED + LDX_BE r10, r11, r8 + cmpdi r10, 0 + beq 1f + LDX_BE r9, r11, r7 + slbmte r9, r10 +1: addi r7, r7, SHADOW_SLB_ENTRY_LEN + addi r8, r8, SHADOW_SLB_ENTRY_LEN + .endr + + isync + sync slb_do_exit: diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index 99d40f8977e..3f295269af3 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -80,7 +80,7 @@ static bool spr_allowed(struct kvm_vcpu *vcpu, enum priv_level level) return false; /* Limit user space to its own small SPR set */ - if ((vcpu->arch.shared->msr & MSR_PR) && level > PRIV_PROBLEM) + if ((kvmppc_get_msr(vcpu) & MSR_PR) && level > PRIV_PROBLEM) return false; return true; @@ -94,14 +94,31 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, int rs = get_rs(inst); int ra = get_ra(inst); int rb = get_rb(inst); + u32 inst_sc = 0x44000002; switch (get_op(inst)) { + case 0: + emulated = EMULATE_FAIL; + if ((kvmppc_get_msr(vcpu) & MSR_LE) && + (inst == swab32(inst_sc))) { + /* + * This is the byte reversed syscall instruction of our + * hypercall handler. Early versions of LE Linux didn't + * swap the instructions correctly and ended up in + * illegal instructions. + * Just always fail hypercalls on these broken systems. + */ + kvmppc_set_gpr(vcpu, 3, EV_UNIMPLEMENTED); + kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) + 4); + emulated = EMULATE_DONE; + } + break; case 19: switch (get_xop(inst)) { case OP_19_XOP_RFID: case OP_19_XOP_RFI: - kvmppc_set_pc(vcpu, vcpu->arch.shared->srr0); - kvmppc_set_msr(vcpu, vcpu->arch.shared->srr1); + kvmppc_set_pc(vcpu, kvmppc_get_srr0(vcpu)); + kvmppc_set_msr(vcpu, kvmppc_get_srr1(vcpu)); *advance = 0; break; @@ -113,16 +130,16 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, case 31: switch (get_xop(inst)) { case OP_31_XOP_MFMSR: - kvmppc_set_gpr(vcpu, rt, vcpu->arch.shared->msr); + kvmppc_set_gpr(vcpu, rt, kvmppc_get_msr(vcpu)); break; case OP_31_XOP_MTMSRD: { ulong rs_val = kvmppc_get_gpr(vcpu, rs); if (inst & 0x10000) { - ulong new_msr = vcpu->arch.shared->msr; + ulong new_msr = kvmppc_get_msr(vcpu); new_msr &= ~(MSR_RI | MSR_EE); new_msr |= rs_val & (MSR_RI | MSR_EE); - vcpu->arch.shared->msr = new_msr; + kvmppc_set_msr_fast(vcpu, new_msr); } else kvmppc_set_msr(vcpu, rs_val); break; @@ -179,7 +196,7 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, ulong cmd = kvmppc_get_gpr(vcpu, 3); int i; - if ((vcpu->arch.shared->msr & MSR_PR) || + if ((kvmppc_get_msr(vcpu) & MSR_PR) || !vcpu->arch.papr_enabled) { emulated = EMULATE_FAIL; break; @@ -261,14 +278,14 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, ra_val = kvmppc_get_gpr(vcpu, ra); addr = (ra_val + rb_val) & ~31ULL; - if (!(vcpu->arch.shared->msr & MSR_SF)) + if (!(kvmppc_get_msr(vcpu) & MSR_SF)) addr &= 0xffffffff; vaddr = addr; r = kvmppc_st(vcpu, &addr, 32, zeros, true); if ((r == -ENOENT) || (r == -EPERM)) { *advance = 0; - vcpu->arch.shared->dar = vaddr; + kvmppc_set_dar(vcpu, vaddr); vcpu->arch.fault_dar = vaddr; dsisr = DSISR_ISSTORE; @@ -277,7 +294,7 @@ int kvmppc_core_emulate_op_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, else if (r == -EPERM) dsisr |= DSISR_PROTFAULT; - vcpu->arch.shared->dsisr = dsisr; + kvmppc_set_dsisr(vcpu, dsisr); vcpu->arch.fault_dsisr = dsisr; kvmppc_book3s_queue_irqprio(vcpu, @@ -356,10 +373,10 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) to_book3s(vcpu)->sdr1 = spr_val; break; case SPRN_DSISR: - vcpu->arch.shared->dsisr = spr_val; + kvmppc_set_dsisr(vcpu, spr_val); break; case SPRN_DAR: - vcpu->arch.shared->dar = spr_val; + kvmppc_set_dar(vcpu, spr_val); break; case SPRN_HIOR: to_book3s(vcpu)->hior = spr_val; @@ -438,6 +455,31 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) case SPRN_GQR7: to_book3s(vcpu)->gqr[sprn - SPRN_GQR0] = spr_val; break; + case SPRN_FSCR: + vcpu->arch.fscr = spr_val; + break; +#ifdef CONFIG_PPC_BOOK3S_64 + case SPRN_BESCR: + vcpu->arch.bescr = spr_val; + break; + case SPRN_EBBHR: + vcpu->arch.ebbhr = spr_val; + break; + case SPRN_EBBRR: + vcpu->arch.ebbrr = spr_val; + break; +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + case SPRN_TFHAR: + vcpu->arch.tfhar = spr_val; + break; + case SPRN_TEXASR: + vcpu->arch.texasr = spr_val; + break; + case SPRN_TFIAR: + vcpu->arch.tfiar = spr_val; + break; +#endif +#endif case SPRN_ICTC: case SPRN_THRM1: case SPRN_THRM2: @@ -455,6 +497,13 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) case SPRN_WPAR_GEKKO: case SPRN_MSSSR0: case SPRN_DABR: +#ifdef CONFIG_PPC_BOOK3S_64 + case SPRN_MMCRS: + case SPRN_MMCRA: + case SPRN_MMCR0: + case SPRN_MMCR1: + case SPRN_MMCR2: +#endif break; unprivileged: default: @@ -493,10 +542,10 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val *spr_val = to_book3s(vcpu)->sdr1; break; case SPRN_DSISR: - *spr_val = vcpu->arch.shared->dsisr; + *spr_val = kvmppc_get_dsisr(vcpu); break; case SPRN_DAR: - *spr_val = vcpu->arch.shared->dar; + *spr_val = kvmppc_get_dar(vcpu); break; case SPRN_HIOR: *spr_val = to_book3s(vcpu)->hior; @@ -538,6 +587,31 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val case SPRN_GQR7: *spr_val = to_book3s(vcpu)->gqr[sprn - SPRN_GQR0]; break; + case SPRN_FSCR: + *spr_val = vcpu->arch.fscr; + break; +#ifdef CONFIG_PPC_BOOK3S_64 + case SPRN_BESCR: + *spr_val = vcpu->arch.bescr; + break; + case SPRN_EBBHR: + *spr_val = vcpu->arch.ebbhr; + break; + case SPRN_EBBRR: + *spr_val = vcpu->arch.ebbrr; + break; +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + case SPRN_TFHAR: + *spr_val = vcpu->arch.tfhar; + break; + case SPRN_TEXASR: + *spr_val = vcpu->arch.texasr; + break; + case SPRN_TFIAR: + *spr_val = vcpu->arch.tfiar; + break; +#endif +#endif case SPRN_THRM1: case SPRN_THRM2: case SPRN_THRM3: @@ -553,6 +627,14 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val case SPRN_WPAR_GEKKO: case SPRN_MSSSR0: case SPRN_DABR: +#ifdef CONFIG_PPC_BOOK3S_64 + case SPRN_MMCRS: + case SPRN_MMCRA: + case SPRN_MMCR0: + case SPRN_MMCR1: + case SPRN_MMCR2: + case SPRN_TIR: +#endif *spr_val = 0; break; default: @@ -569,48 +651,17 @@ unprivileged: u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst) { - u32 dsisr = 0; - - /* - * This is what the spec says about DSISR bits (not mentioned = 0): - * - * 12:13 [DS] Set to bits 30:31 - * 15:16 [X] Set to bits 29:30 - * 17 [X] Set to bit 25 - * [D/DS] Set to bit 5 - * 18:21 [X] Set to bits 21:24 - * [D/DS] Set to bits 1:4 - * 22:26 Set to bits 6:10 (RT/RS/FRT/FRS) - * 27:31 Set to bits 11:15 (RA) - */ - - switch (get_op(inst)) { - /* D-form */ - case OP_LFS: - case OP_LFD: - case OP_STFD: - case OP_STFS: - dsisr |= (inst >> 12) & 0x4000; /* bit 17 */ - dsisr |= (inst >> 17) & 0x3c00; /* bits 18:21 */ - break; - /* X-form */ - case 31: - dsisr |= (inst << 14) & 0x18000; /* bits 15:16 */ - dsisr |= (inst << 8) & 0x04000; /* bit 17 */ - dsisr |= (inst << 3) & 0x03c00; /* bits 18:21 */ - break; - default: - printk(KERN_INFO "KVM: Unaligned instruction 0x%x\n", inst); - break; - } - - dsisr |= (inst >> 16) & 0x03ff; /* bits 22:31 */ - - return dsisr; + return make_dsisr(inst); } ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst) { +#ifdef CONFIG_PPC_BOOK3S_64 + /* + * Linux's fix_alignment() assumes that DAR is valid, so can we + */ + return vcpu->arch.fault_dar; +#else ulong dar = 0; ulong ra = get_ra(inst); ulong rb = get_rb(inst); @@ -635,4 +686,5 @@ ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst) } return dar; +#endif } diff --git a/arch/powerpc/kvm/book3s_exports.c b/arch/powerpc/kvm/book3s_exports.c index 20d4ea8e656..0d013fbc2e1 100644 --- a/arch/powerpc/kvm/book3s_exports.c +++ b/arch/powerpc/kvm/book3s_exports.c @@ -18,6 +18,7 @@ */ #include <linux/export.h> +#include <asm/kvm_ppc.h> #include <asm/kvm_book3s.h> #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 8227dba5af0..aba05bbb3e7 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -879,24 +879,9 @@ static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, case KVM_REG_PPC_IAMR: *val = get_reg_val(id, vcpu->arch.iamr); break; - case KVM_REG_PPC_FSCR: - *val = get_reg_val(id, vcpu->arch.fscr); - break; case KVM_REG_PPC_PSPB: *val = get_reg_val(id, vcpu->arch.pspb); break; - case KVM_REG_PPC_EBBHR: - *val = get_reg_val(id, vcpu->arch.ebbhr); - break; - case KVM_REG_PPC_EBBRR: - *val = get_reg_val(id, vcpu->arch.ebbrr); - break; - case KVM_REG_PPC_BESCR: - *val = get_reg_val(id, vcpu->arch.bescr); - break; - case KVM_REG_PPC_TAR: - *val = get_reg_val(id, vcpu->arch.tar); - break; case KVM_REG_PPC_DPDES: *val = get_reg_val(id, vcpu->arch.vcore->dpdes); break; @@ -1091,24 +1076,9 @@ static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, case KVM_REG_PPC_IAMR: vcpu->arch.iamr = set_reg_val(id, *val); break; - case KVM_REG_PPC_FSCR: - vcpu->arch.fscr = set_reg_val(id, *val); - break; case KVM_REG_PPC_PSPB: vcpu->arch.pspb = set_reg_val(id, *val); break; - case KVM_REG_PPC_EBBHR: - vcpu->arch.ebbhr = set_reg_val(id, *val); - break; - case KVM_REG_PPC_EBBRR: - vcpu->arch.ebbrr = set_reg_val(id, *val); - break; - case KVM_REG_PPC_BESCR: - vcpu->arch.bescr = set_reg_val(id, *val); - break; - case KVM_REG_PPC_TAR: - vcpu->arch.tar = set_reg_val(id, *val); - break; case KVM_REG_PPC_DPDES: vcpu->arch.vcore->dpdes = set_reg_val(id, *val); break; @@ -1280,6 +1250,17 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm, goto free_vcpu; vcpu->arch.shared = &vcpu->arch.shregs; +#ifdef CONFIG_KVM_BOOK3S_PR_POSSIBLE + /* + * The shared struct is never shared on HV, + * so we can always use host endianness + */ +#ifdef __BIG_ENDIAN__ + vcpu->arch.shared_big_endian = true; +#else + vcpu->arch.shared_big_endian = false; +#endif +#endif vcpu->arch.mmcr[0] = MMCR0_FC; vcpu->arch.ctrl = CTRL_RUNLATCH; /* default to host PVR, since we can't spoof it */ @@ -1949,6 +1930,13 @@ static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size **sps, * support pte_enc here */ (*sps)->enc[0].pte_enc = def->penc[linux_psize]; + /* + * Add 16MB MPSS support if host supports it + */ + if (linux_psize != MMU_PAGE_16M && def->penc[MMU_PAGE_16M] != -1) { + (*sps)->enc[1].page_shift = 24; + (*sps)->enc[1].pte_enc = def->penc[MMU_PAGE_16M]; + } (*sps)++; } diff --git a/arch/powerpc/kvm/book3s_hv_rm_mmu.c b/arch/powerpc/kvm/book3s_hv_rm_mmu.c index 8fcc36306a0..6e6224318c3 100644 --- a/arch/powerpc/kvm/book3s_hv_rm_mmu.c +++ b/arch/powerpc/kvm/book3s_hv_rm_mmu.c @@ -42,13 +42,14 @@ static int global_invalidates(struct kvm *kvm, unsigned long flags) /* * If there is only one vcore, and it's currently running, + * as indicated by local_paca->kvm_hstate.kvm_vcpu being set, * we can use tlbiel as long as we mark all other physical * cores as potentially having stale TLB entries for this lpid. * If we're not using MMU notifiers, we never take pages away * from the guest, so we can use tlbiel if requested. * Otherwise, don't use tlbiel. */ - if (kvm->arch.online_vcores == 1 && local_paca->kvm_hstate.kvm_vcore) + if (kvm->arch.online_vcores == 1 && local_paca->kvm_hstate.kvm_vcpu) global = 0; else if (kvm->arch.using_mmu_notifiers) global = 1; diff --git a/arch/powerpc/kvm/book3s_hv_rmhandlers.S b/arch/powerpc/kvm/book3s_hv_rmhandlers.S index 07c8b5b0f9d..974793435a2 100644 --- a/arch/powerpc/kvm/book3s_hv_rmhandlers.S +++ b/arch/powerpc/kvm/book3s_hv_rmhandlers.S @@ -86,6 +86,12 @@ END_FTR_SECTION_IFCLR(CPU_FTR_ARCH_207S) lbz r4, LPPACA_PMCINUSE(r3) cmpwi r4, 0 beq 23f /* skip if not */ +BEGIN_FTR_SECTION + ld r3, HSTATE_MMCR(r13) + andi. r4, r3, MMCR0_PMAO_SYNC | MMCR0_PMAO + cmpwi r4, MMCR0_PMAO + beql kvmppc_fix_pmao +END_FTR_SECTION_IFSET(CPU_FTR_PMAO_BUG) lwz r3, HSTATE_PMC(r13) lwz r4, HSTATE_PMC + 4(r13) lwz r5, HSTATE_PMC + 8(r13) @@ -737,6 +743,12 @@ skip_tm: sldi r3, r3, 31 /* MMCR0_FC (freeze counters) bit */ mtspr SPRN_MMCR0, r3 /* freeze all counters, disable ints */ isync +BEGIN_FTR_SECTION + ld r3, VCPU_MMCR(r4) + andi. r5, r3, MMCR0_PMAO_SYNC | MMCR0_PMAO + cmpwi r5, MMCR0_PMAO + beql kvmppc_fix_pmao +END_FTR_SECTION_IFSET(CPU_FTR_PMAO_BUG) lwz r3, VCPU_PMC(r4) /* always load up guest PMU registers */ lwz r5, VCPU_PMC + 4(r4) /* to prevent information leak */ lwz r6, VCPU_PMC + 8(r4) @@ -1439,6 +1451,30 @@ END_FTR_SECTION_IFCLR(CPU_FTR_TM) 25: /* Save PMU registers if requested */ /* r8 and cr0.eq are live here */ +BEGIN_FTR_SECTION + /* + * POWER8 seems to have a hardware bug where setting + * MMCR0[PMAE] along with MMCR0[PMC1CE] and/or MMCR0[PMCjCE] + * when some counters are already negative doesn't seem + * to cause a performance monitor alert (and hence interrupt). + * The effect of this is that when saving the PMU state, + * if there is no PMU alert pending when we read MMCR0 + * before freezing the counters, but one becomes pending + * before we read the counters, we lose it. + * To work around this, we need a way to freeze the counters + * before reading MMCR0. Normally, freezing the counters + * is done by writing MMCR0 (to set MMCR0[FC]) which + * unavoidably writes MMCR0[PMA0] as well. On POWER8, + * we can also freeze the counters using MMCR2, by writing + * 1s to all the counter freeze condition bits (there are + * 9 bits each for 6 counters). + */ + li r3, -1 /* set all freeze bits */ + clrrdi r3, r3, 10 + mfspr r10, SPRN_MMCR2 + mtspr SPRN_MMCR2, r3 + isync +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) li r3, 1 sldi r3, r3, 31 /* MMCR0_FC (freeze counters) bit */ mfspr r4, SPRN_MMCR0 /* save MMCR0 */ @@ -1462,6 +1498,9 @@ END_FTR_SECTION_IFSET(CPU_FTR_ARCH_206) std r4, VCPU_MMCR(r9) std r5, VCPU_MMCR + 8(r9) std r6, VCPU_MMCR + 16(r9) +BEGIN_FTR_SECTION + std r10, VCPU_MMCR + 24(r9) +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) std r7, VCPU_SIAR(r9) std r8, VCPU_SDAR(r9) mfspr r3, SPRN_PMC1 @@ -1485,12 +1524,10 @@ BEGIN_FTR_SECTION stw r11, VCPU_PMC + 28(r9) END_FTR_SECTION_IFSET(CPU_FTR_ARCH_201) BEGIN_FTR_SECTION - mfspr r4, SPRN_MMCR2 mfspr r5, SPRN_SIER mfspr r6, SPRN_SPMC1 mfspr r7, SPRN_SPMC2 mfspr r8, SPRN_MMCRS - std r4, VCPU_MMCR + 24(r9) std r5, VCPU_SIER(r9) stw r6, VCPU_PMC + 24(r9) stw r7, VCPU_PMC + 28(r9) @@ -2227,6 +2264,7 @@ machine_check_realmode: beq mc_cont /* If not, deliver a machine check. SRR0/1 are already set */ li r10, BOOK3S_INTERRUPT_MACHINE_CHECK + ld r11, VCPU_MSR(r9) bl kvmppc_msr_interrupt b fast_interrupt_c_return @@ -2431,3 +2469,21 @@ kvmppc_msr_interrupt: li r0, 1 1: rldimi r11, r0, MSR_TS_S_LG, 63 - MSR_TS_T_LG blr + +/* + * This works around a hardware bug on POWER8E processors, where + * writing a 1 to the MMCR0[PMAO] bit doesn't generate a + * performance monitor interrupt. Instead, when we need to have + * an interrupt pending, we have to arrange for a counter to overflow. + */ +kvmppc_fix_pmao: + li r3, 0 + mtspr SPRN_MMCR2, r3 + lis r3, (MMCR0_PMXE | MMCR0_FCECE)@h + ori r3, r3, MMCR0_PMCjCE | MMCR0_C56RUN + mtspr SPRN_MMCR0, r3 + lis r3, 0x7fff + ori r3, r3, 0xffff + mtspr SPRN_PMC6, r3 + isync + blr diff --git a/arch/powerpc/kvm/book3s_interrupts.S b/arch/powerpc/kvm/book3s_interrupts.S index 3533c999194..e2c29e381dc 100644 --- a/arch/powerpc/kvm/book3s_interrupts.S +++ b/arch/powerpc/kvm/book3s_interrupts.S @@ -104,8 +104,27 @@ kvm_start_lightweight: stb r3, HSTATE_RESTORE_HID5(r13) /* Load up guest SPRG3 value, since it's user readable */ - ld r3, VCPU_SHARED(r4) - ld r3, VCPU_SHARED_SPRG3(r3) + lwz r3, VCPU_SHAREDBE(r4) + cmpwi r3, 0 + ld r5, VCPU_SHARED(r4) + beq sprg3_little_endian +sprg3_big_endian: +#ifdef __BIG_ENDIAN__ + ld r3, VCPU_SHARED_SPRG3(r5) +#else + addi r5, r5, VCPU_SHARED_SPRG3 + ldbrx r3, 0, r5 +#endif + b after_sprg3_load +sprg3_little_endian: +#ifdef __LITTLE_ENDIAN__ + ld r3, VCPU_SHARED_SPRG3(r5) +#else + addi r5, r5, VCPU_SHARED_SPRG3 + ldbrx r3, 0, r5 +#endif + +after_sprg3_load: mtspr SPRN_SPRG3, r3 #endif /* CONFIG_PPC_BOOK3S_64 */ diff --git a/arch/powerpc/kvm/book3s_paired_singles.c b/arch/powerpc/kvm/book3s_paired_singles.c index c1abd95063f..6c8011fd57e 100644 --- a/arch/powerpc/kvm/book3s_paired_singles.c +++ b/arch/powerpc/kvm/book3s_paired_singles.c @@ -165,16 +165,18 @@ static inline void kvmppc_sync_qpr(struct kvm_vcpu *vcpu, int rt) static void kvmppc_inject_pf(struct kvm_vcpu *vcpu, ulong eaddr, bool is_store) { - u64 dsisr; - struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared; + u32 dsisr; + u64 msr = kvmppc_get_msr(vcpu); - shared->msr = kvmppc_set_field(shared->msr, 33, 36, 0); - shared->msr = kvmppc_set_field(shared->msr, 42, 47, 0); - shared->dar = eaddr; + msr = kvmppc_set_field(msr, 33, 36, 0); + msr = kvmppc_set_field(msr, 42, 47, 0); + kvmppc_set_msr(vcpu, msr); + kvmppc_set_dar(vcpu, eaddr); /* Page Fault */ dsisr = kvmppc_set_field(0, 33, 33, 1); if (is_store) - shared->dsisr = kvmppc_set_field(dsisr, 38, 38, 1); + dsisr = kvmppc_set_field(dsisr, 38, 38, 1); + kvmppc_set_dsisr(vcpu, dsisr); kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE); } @@ -660,7 +662,7 @@ int kvmppc_emulate_paired_single(struct kvm_run *run, struct kvm_vcpu *vcpu) if (!kvmppc_inst_is_paired_single(vcpu, inst)) return EMULATE_FAIL; - if (!(vcpu->arch.shared->msr & MSR_FP)) { + if (!(kvmppc_get_msr(vcpu) & MSR_FP)) { kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL); return EMULATE_AGAIN; } diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index 02f1defd8bb..8eef1e51907 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -53,6 +53,7 @@ static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, ulong msr); +static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac); /* Some compatibility defines */ #ifdef CONFIG_PPC_BOOK3S_32 @@ -89,6 +90,7 @@ static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu) #endif kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX); + kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); vcpu->cpu = -1; } @@ -115,6 +117,9 @@ void kvmppc_copy_to_svcpu(struct kvmppc_book3s_shadow_vcpu *svcpu, svcpu->ctr = vcpu->arch.ctr; svcpu->lr = vcpu->arch.lr; svcpu->pc = vcpu->arch.pc; +#ifdef CONFIG_PPC_BOOK3S_64 + svcpu->shadow_fscr = vcpu->arch.shadow_fscr; +#endif svcpu->in_use = true; } @@ -158,6 +163,9 @@ void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu, vcpu->arch.fault_dar = svcpu->fault_dar; vcpu->arch.fault_dsisr = svcpu->fault_dsisr; vcpu->arch.last_inst = svcpu->last_inst; +#ifdef CONFIG_PPC_BOOK3S_64 + vcpu->arch.shadow_fscr = svcpu->shadow_fscr; +#endif svcpu->in_use = false; out: @@ -246,14 +254,15 @@ static void kvm_set_spte_hva_pr(struct kvm *kvm, unsigned long hva, pte_t pte) static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu) { - ulong smsr = vcpu->arch.shared->msr; + ulong guest_msr = kvmppc_get_msr(vcpu); + ulong smsr = guest_msr; /* Guest MSR values */ - smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE; + smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_LE; /* Process MSR values */ smsr |= MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_PR | MSR_EE; /* External providers the guest reserved */ - smsr |= (vcpu->arch.shared->msr & vcpu->arch.guest_owned_ext); + smsr |= (guest_msr & vcpu->arch.guest_owned_ext); /* 64-bit Process MSR values */ #ifdef CONFIG_PPC_BOOK3S_64 smsr |= MSR_ISF | MSR_HV; @@ -263,14 +272,14 @@ static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu) static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr) { - ulong old_msr = vcpu->arch.shared->msr; + ulong old_msr = kvmppc_get_msr(vcpu); #ifdef EXIT_DEBUG printk(KERN_INFO "KVM: Set MSR to 0x%llx\n", msr); #endif msr &= to_book3s(vcpu)->msr_mask; - vcpu->arch.shared->msr = msr; + kvmppc_set_msr_fast(vcpu, msr); kvmppc_recalc_shadow_msr(vcpu); if (msr & MSR_POW) { @@ -281,11 +290,11 @@ static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr) /* Unset POW bit after we woke up */ msr &= ~MSR_POW; - vcpu->arch.shared->msr = msr; + kvmppc_set_msr_fast(vcpu, msr); } } - if ((vcpu->arch.shared->msr & (MSR_PR|MSR_IR|MSR_DR)) != + if ((kvmppc_get_msr(vcpu) & (MSR_PR|MSR_IR|MSR_DR)) != (old_msr & (MSR_PR|MSR_IR|MSR_DR))) { kvmppc_mmu_flush_segments(vcpu); kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)); @@ -317,7 +326,7 @@ static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr) } /* Preload FPU if it's enabled */ - if (vcpu->arch.shared->msr & MSR_FP) + if (kvmppc_get_msr(vcpu) & MSR_FP) kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); } @@ -427,8 +436,8 @@ static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte) /* patch dcbz into reserved instruction, so we trap */ for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++) - if ((page[i] & 0xff0007ff) == INS_DCBZ) - page[i] &= 0xfffffff7; + if ((be32_to_cpu(page[i]) & 0xff0007ff) == INS_DCBZ) + page[i] &= cpu_to_be32(0xfffffff7); kunmap_atomic(page); put_page(hpage); @@ -438,7 +447,7 @@ static int kvmppc_visible_gfn(struct kvm_vcpu *vcpu, gfn_t gfn) { ulong mp_pa = vcpu->arch.magic_page_pa; - if (!(vcpu->arch.shared->msr & MSR_SF)) + if (!(kvmppc_get_msr(vcpu) & MSR_SF)) mp_pa = (uint32_t)mp_pa; if (unlikely(mp_pa) && @@ -459,8 +468,8 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, int page_found = 0; struct kvmppc_pte pte; bool is_mmio = false; - bool dr = (vcpu->arch.shared->msr & MSR_DR) ? true : false; - bool ir = (vcpu->arch.shared->msr & MSR_IR) ? true : false; + bool dr = (kvmppc_get_msr(vcpu) & MSR_DR) ? true : false; + bool ir = (kvmppc_get_msr(vcpu) & MSR_IR) ? true : false; u64 vsid; relocated = data ? dr : ir; @@ -480,7 +489,7 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, pte.page_size = MMU_PAGE_64K; } - switch (vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) { + switch (kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) { case 0: pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12)); break; @@ -488,7 +497,7 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, case MSR_IR: vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid); - if ((vcpu->arch.shared->msr & (MSR_DR|MSR_IR)) == MSR_DR) + if ((kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) == MSR_DR) pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12)); else pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12)); @@ -511,22 +520,25 @@ int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu, if (page_found == -ENOENT) { /* Page not found in guest PTE entries */ - vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); - vcpu->arch.shared->dsisr = vcpu->arch.fault_dsisr; - vcpu->arch.shared->msr |= - vcpu->arch.shadow_srr1 & 0x00000000f8000000ULL; + u64 ssrr1 = vcpu->arch.shadow_srr1; + u64 msr = kvmppc_get_msr(vcpu); + kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); + kvmppc_set_dsisr(vcpu, vcpu->arch.fault_dsisr); + kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL)); kvmppc_book3s_queue_irqprio(vcpu, vec); } else if (page_found == -EPERM) { /* Storage protection */ - vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); - vcpu->arch.shared->dsisr = vcpu->arch.fault_dsisr & ~DSISR_NOHPTE; - vcpu->arch.shared->dsisr |= DSISR_PROTFAULT; - vcpu->arch.shared->msr |= - vcpu->arch.shadow_srr1 & 0x00000000f8000000ULL; + u32 dsisr = vcpu->arch.fault_dsisr; + u64 ssrr1 = vcpu->arch.shadow_srr1; + u64 msr = kvmppc_get_msr(vcpu); + kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); + dsisr = (dsisr & ~DSISR_NOHPTE) | DSISR_PROTFAULT; + kvmppc_set_dsisr(vcpu, dsisr); + kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL)); kvmppc_book3s_queue_irqprio(vcpu, vec); } else if (page_found == -EINVAL) { /* Page not found in guest SLB */ - vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); + kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80); } else if (!is_mmio && kvmppc_visible_gfn(vcpu, pte.raddr >> PAGE_SHIFT)) { @@ -606,6 +618,25 @@ void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr) kvmppc_recalc_shadow_msr(vcpu); } +/* Give up facility (TAR / EBB / DSCR) */ +static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac) +{ +#ifdef CONFIG_PPC_BOOK3S_64 + if (!(vcpu->arch.shadow_fscr & (1ULL << fac))) { + /* Facility not available to the guest, ignore giveup request*/ + return; + } + + switch (fac) { + case FSCR_TAR_LG: + vcpu->arch.tar = mfspr(SPRN_TAR); + mtspr(SPRN_TAR, current->thread.tar); + vcpu->arch.shadow_fscr &= ~FSCR_TAR; + break; + } +#endif +} + static int kvmppc_read_inst(struct kvm_vcpu *vcpu) { ulong srr0 = kvmppc_get_pc(vcpu); @@ -614,11 +645,12 @@ static int kvmppc_read_inst(struct kvm_vcpu *vcpu) ret = kvmppc_ld(vcpu, &srr0, sizeof(u32), &last_inst, false); if (ret == -ENOENT) { - ulong msr = vcpu->arch.shared->msr; + ulong msr = kvmppc_get_msr(vcpu); msr = kvmppc_set_field(msr, 33, 33, 1); msr = kvmppc_set_field(msr, 34, 36, 0); - vcpu->arch.shared->msr = kvmppc_set_field(msr, 42, 47, 0); + msr = kvmppc_set_field(msr, 42, 47, 0); + kvmppc_set_msr_fast(vcpu, msr); kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE); return EMULATE_AGAIN; } @@ -651,7 +683,7 @@ static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) return RESUME_GUEST; - if (!(vcpu->arch.shared->msr & msr)) { + if (!(kvmppc_get_msr(vcpu) & msr)) { kvmppc_book3s_queue_irqprio(vcpu, exit_nr); return RESUME_GUEST; } @@ -683,16 +715,20 @@ static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr, #endif if (msr & MSR_FP) { + preempt_disable(); enable_kernel_fp(); load_fp_state(&vcpu->arch.fp); t->fp_save_area = &vcpu->arch.fp; + preempt_enable(); } if (msr & MSR_VEC) { #ifdef CONFIG_ALTIVEC + preempt_disable(); enable_kernel_altivec(); load_vr_state(&vcpu->arch.vr); t->vr_save_area = &vcpu->arch.vr; + preempt_enable(); #endif } @@ -716,18 +752,90 @@ static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu) return; if (lost_ext & MSR_FP) { + preempt_disable(); enable_kernel_fp(); load_fp_state(&vcpu->arch.fp); + preempt_enable(); } #ifdef CONFIG_ALTIVEC if (lost_ext & MSR_VEC) { + preempt_disable(); enable_kernel_altivec(); load_vr_state(&vcpu->arch.vr); + preempt_enable(); } #endif current->thread.regs->msr |= lost_ext; } +#ifdef CONFIG_PPC_BOOK3S_64 + +static void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac) +{ + /* Inject the Interrupt Cause field and trigger a guest interrupt */ + vcpu->arch.fscr &= ~(0xffULL << 56); + vcpu->arch.fscr |= (fac << 56); + kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FAC_UNAVAIL); +} + +static void kvmppc_emulate_fac(struct kvm_vcpu *vcpu, ulong fac) +{ + enum emulation_result er = EMULATE_FAIL; + + if (!(kvmppc_get_msr(vcpu) & MSR_PR)) + er = kvmppc_emulate_instruction(vcpu->run, vcpu); + + if ((er != EMULATE_DONE) && (er != EMULATE_AGAIN)) { + /* Couldn't emulate, trigger interrupt in guest */ + kvmppc_trigger_fac_interrupt(vcpu, fac); + } +} + +/* Enable facilities (TAR, EBB, DSCR) for the guest */ +static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac) +{ + bool guest_fac_enabled; + BUG_ON(!cpu_has_feature(CPU_FTR_ARCH_207S)); + + /* + * Not every facility is enabled by FSCR bits, check whether the + * guest has this facility enabled at all. + */ + switch (fac) { + case FSCR_TAR_LG: + case FSCR_EBB_LG: + guest_fac_enabled = (vcpu->arch.fscr & (1ULL << fac)); + break; + case FSCR_TM_LG: + guest_fac_enabled = kvmppc_get_msr(vcpu) & MSR_TM; + break; + default: + guest_fac_enabled = false; + break; + } + + if (!guest_fac_enabled) { + /* Facility not enabled by the guest */ + kvmppc_trigger_fac_interrupt(vcpu, fac); + return RESUME_GUEST; + } + + switch (fac) { + case FSCR_TAR_LG: + /* TAR switching isn't lazy in Linux yet */ + current->thread.tar = mfspr(SPRN_TAR); + mtspr(SPRN_TAR, vcpu->arch.tar); + vcpu->arch.shadow_fscr |= FSCR_TAR; + break; + default: + kvmppc_emulate_fac(vcpu, fac); + break; + } + + return RESUME_GUEST; +} +#endif + int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int exit_nr) { @@ -784,7 +892,9 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL); r = RESUME_GUEST; } else { - vcpu->arch.shared->msr |= shadow_srr1 & 0x58000000; + u64 msr = kvmppc_get_msr(vcpu); + msr |= shadow_srr1 & 0x58000000; + kvmppc_set_msr_fast(vcpu, msr); kvmppc_book3s_queue_irqprio(vcpu, exit_nr); r = RESUME_GUEST; } @@ -824,8 +934,8 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr); srcu_read_unlock(&vcpu->kvm->srcu, idx); } else { - vcpu->arch.shared->dar = dar; - vcpu->arch.shared->dsisr = fault_dsisr; + kvmppc_set_dar(vcpu, dar); + kvmppc_set_dsisr(vcpu, fault_dsisr); kvmppc_book3s_queue_irqprio(vcpu, exit_nr); r = RESUME_GUEST; } @@ -833,7 +943,7 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, } case BOOK3S_INTERRUPT_DATA_SEGMENT: if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) { - vcpu->arch.shared->dar = kvmppc_get_fault_dar(vcpu); + kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu)); kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_SEGMENT); } @@ -871,7 +981,7 @@ int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu, program_interrupt: flags = vcpu->arch.shadow_srr1 & 0x1f0000ull; - if (vcpu->arch.shared->msr & MSR_PR) { + if (kvmppc_get_msr(vcpu) & MSR_PR) { #ifdef EXIT_DEBUG printk(KERN_INFO "Userspace triggered 0x700 exception at 0x%lx (0x%x)\n", kvmppc_get_pc(vcpu), kvmppc_get_last_inst(vcpu)); #endif @@ -913,7 +1023,7 @@ program_interrupt: case BOOK3S_INTERRUPT_SYSCALL: if (vcpu->arch.papr_enabled && (kvmppc_get_last_sc(vcpu) == 0x44000022) && - !(vcpu->arch.shared->msr & MSR_PR)) { + !(kvmppc_get_msr(vcpu) & MSR_PR)) { /* SC 1 papr hypercalls */ ulong cmd = kvmppc_get_gpr(vcpu, 3); int i; @@ -945,7 +1055,7 @@ program_interrupt: gprs[i] = kvmppc_get_gpr(vcpu, i); vcpu->arch.osi_needed = 1; r = RESUME_HOST_NV; - } else if (!(vcpu->arch.shared->msr & MSR_PR) && + } else if (!(kvmppc_get_msr(vcpu) & MSR_PR) && (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { /* KVM PV hypercalls */ kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); @@ -986,14 +1096,26 @@ program_interrupt: } case BOOK3S_INTERRUPT_ALIGNMENT: if (kvmppc_read_inst(vcpu) == EMULATE_DONE) { - vcpu->arch.shared->dsisr = kvmppc_alignment_dsisr(vcpu, - kvmppc_get_last_inst(vcpu)); - vcpu->arch.shared->dar = kvmppc_alignment_dar(vcpu, - kvmppc_get_last_inst(vcpu)); + u32 last_inst = kvmppc_get_last_inst(vcpu); + u32 dsisr; + u64 dar; + + dsisr = kvmppc_alignment_dsisr(vcpu, last_inst); + dar = kvmppc_alignment_dar(vcpu, last_inst); + + kvmppc_set_dsisr(vcpu, dsisr); + kvmppc_set_dar(vcpu, dar); + kvmppc_book3s_queue_irqprio(vcpu, exit_nr); } r = RESUME_GUEST; break; +#ifdef CONFIG_PPC_BOOK3S_64 + case BOOK3S_INTERRUPT_FAC_UNAVAIL: + kvmppc_handle_fac(vcpu, vcpu->arch.shadow_fscr >> 56); + r = RESUME_GUEST; + break; +#endif case BOOK3S_INTERRUPT_MACHINE_CHECK: case BOOK3S_INTERRUPT_TRACE: kvmppc_book3s_queue_irqprio(vcpu, exit_nr); @@ -1054,7 +1176,7 @@ static int kvm_arch_vcpu_ioctl_get_sregs_pr(struct kvm_vcpu *vcpu, } } else { for (i = 0; i < 16; i++) - sregs->u.s.ppc32.sr[i] = vcpu->arch.shared->sr[i]; + sregs->u.s.ppc32.sr[i] = kvmppc_get_sr(vcpu, i); for (i = 0; i < 8; i++) { sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw; @@ -1110,6 +1232,15 @@ static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, case KVM_REG_PPC_HIOR: *val = get_reg_val(id, to_book3s(vcpu)->hior); break; + case KVM_REG_PPC_LPCR: + /* + * We are only interested in the LPCR_ILE bit + */ + if (vcpu->arch.intr_msr & MSR_LE) + *val = get_reg_val(id, LPCR_ILE); + else + *val = get_reg_val(id, 0); + break; default: r = -EINVAL; break; @@ -1118,6 +1249,14 @@ static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, return r; } +static void kvmppc_set_lpcr_pr(struct kvm_vcpu *vcpu, u64 new_lpcr) +{ + if (new_lpcr & LPCR_ILE) + vcpu->arch.intr_msr |= MSR_LE; + else + vcpu->arch.intr_msr &= ~MSR_LE; +} + static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, union kvmppc_one_reg *val) { @@ -1128,6 +1267,9 @@ static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id, to_book3s(vcpu)->hior = set_reg_val(id, *val); to_book3s(vcpu)->hior_explicit = true; break; + case KVM_REG_PPC_LPCR: + kvmppc_set_lpcr_pr(vcpu, set_reg_val(id, *val)); + break; default: r = -EINVAL; break; @@ -1170,8 +1312,14 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm, goto uninit_vcpu; /* the real shared page fills the last 4k of our page */ vcpu->arch.shared = (void *)(p + PAGE_SIZE - 4096); - #ifdef CONFIG_PPC_BOOK3S_64 + /* Always start the shared struct in native endian mode */ +#ifdef __BIG_ENDIAN__ + vcpu->arch.shared_big_endian = true; +#else + vcpu->arch.shared_big_endian = false; +#endif + /* * Default to the same as the host if we're on sufficiently * recent machine that we have 1TB segments; @@ -1180,6 +1328,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm, vcpu->arch.pvr = 0x3C0301; if (mmu_has_feature(MMU_FTR_1T_SEGMENT)) vcpu->arch.pvr = mfspr(SPRN_PVR); + vcpu->arch.intr_msr = MSR_SF; #else /* default to book3s_32 (750) */ vcpu->arch.pvr = 0x84202; @@ -1187,7 +1336,7 @@ static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm, kvmppc_set_pvr_pr(vcpu, vcpu->arch.pvr); vcpu->arch.slb_nr = 64; - vcpu->arch.shadow_msr = MSR_USER64; + vcpu->arch.shadow_msr = MSR_USER64 & ~MSR_LE; err = kvmppc_mmu_init(vcpu); if (err < 0) @@ -1264,7 +1413,7 @@ static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) #endif /* Preload FPU if it's enabled */ - if (vcpu->arch.shared->msr & MSR_FP) + if (kvmppc_get_msr(vcpu) & MSR_FP) kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP); kvmppc_fix_ee_before_entry(); @@ -1277,6 +1426,9 @@ static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) /* Make sure we save the guest FPU/Altivec/VSX state */ kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX); + /* Make sure we save the guest TAR/EBB/DSCR state */ + kvmppc_giveup_fac(vcpu, FSCR_TAR_LG); + out: vcpu->mode = OUTSIDE_GUEST_MODE; return ret; diff --git a/arch/powerpc/kvm/book3s_pr_papr.c b/arch/powerpc/kvm/book3s_pr_papr.c index 5efa97b993d..52a63bfe3f0 100644 --- a/arch/powerpc/kvm/book3s_pr_papr.c +++ b/arch/powerpc/kvm/book3s_pr_papr.c @@ -57,7 +57,7 @@ static int kvmppc_h_pr_enter(struct kvm_vcpu *vcpu) for (i = 0; ; ++i) { if (i == 8) goto done; - if ((*hpte & HPTE_V_VALID) == 0) + if ((be64_to_cpu(*hpte) & HPTE_V_VALID) == 0) break; hpte += 2; } @@ -67,8 +67,8 @@ static int kvmppc_h_pr_enter(struct kvm_vcpu *vcpu) goto done; } - hpte[0] = kvmppc_get_gpr(vcpu, 6); - hpte[1] = kvmppc_get_gpr(vcpu, 7); + hpte[0] = cpu_to_be64(kvmppc_get_gpr(vcpu, 6)); + hpte[1] = cpu_to_be64(kvmppc_get_gpr(vcpu, 7)); pteg_addr += i * HPTE_SIZE; copy_to_user((void __user *)pteg_addr, hpte, HPTE_SIZE); kvmppc_set_gpr(vcpu, 4, pte_index | i); @@ -93,6 +93,8 @@ static int kvmppc_h_pr_remove(struct kvm_vcpu *vcpu) pteg = get_pteg_addr(vcpu, pte_index); mutex_lock(&vcpu->kvm->arch.hpt_mutex); copy_from_user(pte, (void __user *)pteg, sizeof(pte)); + pte[0] = be64_to_cpu(pte[0]); + pte[1] = be64_to_cpu(pte[1]); ret = H_NOT_FOUND; if ((pte[0] & HPTE_V_VALID) == 0 || @@ -169,6 +171,8 @@ static int kvmppc_h_pr_bulk_remove(struct kvm_vcpu *vcpu) pteg = get_pteg_addr(vcpu, tsh & H_BULK_REMOVE_PTEX); copy_from_user(pte, (void __user *)pteg, sizeof(pte)); + pte[0] = be64_to_cpu(pte[0]); + pte[1] = be64_to_cpu(pte[1]); /* tsl = AVPN */ flags = (tsh & H_BULK_REMOVE_FLAGS) >> 26; @@ -207,6 +211,8 @@ static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu) pteg = get_pteg_addr(vcpu, pte_index); mutex_lock(&vcpu->kvm->arch.hpt_mutex); copy_from_user(pte, (void __user *)pteg, sizeof(pte)); + pte[0] = be64_to_cpu(pte[0]); + pte[1] = be64_to_cpu(pte[1]); ret = H_NOT_FOUND; if ((pte[0] & HPTE_V_VALID) == 0 || @@ -225,6 +231,8 @@ static int kvmppc_h_pr_protect(struct kvm_vcpu *vcpu) rb = compute_tlbie_rb(v, r, pte_index); vcpu->arch.mmu.tlbie(vcpu, rb, rb & 1 ? true : false); + pte[0] = cpu_to_be64(pte[0]); + pte[1] = cpu_to_be64(pte[1]); copy_to_user((void __user *)pteg, pte, sizeof(pte)); ret = H_SUCCESS; @@ -270,7 +278,7 @@ int kvmppc_h_pr(struct kvm_vcpu *vcpu, unsigned long cmd) case H_PUT_TCE: return kvmppc_h_pr_put_tce(vcpu); case H_CEDE: - vcpu->arch.shared->msr |= MSR_EE; + kvmppc_set_msr_fast(vcpu, kvmppc_get_msr(vcpu) | MSR_EE); kvm_vcpu_block(vcpu); clear_bit(KVM_REQ_UNHALT, &vcpu->requests); vcpu->stat.halt_wakeup++; diff --git a/arch/powerpc/kvm/book3s_rtas.c b/arch/powerpc/kvm/book3s_rtas.c index 7a053157483..edb14ba992b 100644 --- a/arch/powerpc/kvm/book3s_rtas.c +++ b/arch/powerpc/kvm/book3s_rtas.c @@ -205,6 +205,32 @@ int kvm_vm_ioctl_rtas_define_token(struct kvm *kvm, void __user *argp) return rc; } +static void kvmppc_rtas_swap_endian_in(struct rtas_args *args) +{ +#ifdef __LITTLE_ENDIAN__ + int i; + + args->token = be32_to_cpu(args->token); + args->nargs = be32_to_cpu(args->nargs); + args->nret = be32_to_cpu(args->nret); + for (i = 0; i < args->nargs; i++) + args->args[i] = be32_to_cpu(args->args[i]); +#endif +} + +static void kvmppc_rtas_swap_endian_out(struct rtas_args *args) +{ +#ifdef __LITTLE_ENDIAN__ + int i; + + for (i = 0; i < args->nret; i++) + args->args[i] = cpu_to_be32(args->args[i]); + args->token = cpu_to_be32(args->token); + args->nargs = cpu_to_be32(args->nargs); + args->nret = cpu_to_be32(args->nret); +#endif +} + int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu) { struct rtas_token_definition *d; @@ -223,6 +249,8 @@ int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu) if (rc) goto fail; + kvmppc_rtas_swap_endian_in(&args); + /* * args->rets is a pointer into args->args. Now that we've * copied args we need to fix it up to point into our copy, @@ -247,6 +275,7 @@ int kvmppc_rtas_hcall(struct kvm_vcpu *vcpu) if (rc == 0) { args.rets = orig_rets; + kvmppc_rtas_swap_endian_out(&args); rc = kvm_write_guest(vcpu->kvm, args_phys, &args, sizeof(args)); if (rc) goto fail; diff --git a/arch/powerpc/kvm/book3s_segment.S b/arch/powerpc/kvm/book3s_segment.S index 1e0cc2adfd4..acee37cde84 100644 --- a/arch/powerpc/kvm/book3s_segment.S +++ b/arch/powerpc/kvm/book3s_segment.S @@ -90,6 +90,15 @@ kvmppc_handler_trampoline_enter: LOAD_GUEST_SEGMENTS #ifdef CONFIG_PPC_BOOK3S_64 +BEGIN_FTR_SECTION + /* Save host FSCR */ + mfspr r8, SPRN_FSCR + std r8, HSTATE_HOST_FSCR(r13) + /* Set FSCR during guest execution */ + ld r9, SVCPU_SHADOW_FSCR(r13) + mtspr SPRN_FSCR, r9 +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) + /* Some guests may need to have dcbz set to 32 byte length. * * Usually we ensure that by patching the guest's instructions @@ -255,6 +264,10 @@ BEGIN_FTR_SECTION cmpwi r12, BOOK3S_INTERRUPT_H_EMUL_ASSIST beq- ld_last_inst END_FTR_SECTION_IFSET(CPU_FTR_HVMODE) +BEGIN_FTR_SECTION + cmpwi r12, BOOK3S_INTERRUPT_FAC_UNAVAIL + beq- ld_last_inst +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) #endif b no_ld_last_inst @@ -311,6 +324,18 @@ no_ld_last_inst: no_dcbz32_off: +BEGIN_FTR_SECTION + /* Save guest FSCR on a FAC_UNAVAIL interrupt */ + cmpwi r12, BOOK3S_INTERRUPT_FAC_UNAVAIL + bne+ no_fscr_save + mfspr r7, SPRN_FSCR + std r7, SVCPU_SHADOW_FSCR(r13) +no_fscr_save: + /* Restore host FSCR */ + ld r8, HSTATE_HOST_FSCR(r13) + mtspr SPRN_FSCR, r8 +END_FTR_SECTION_IFSET(CPU_FTR_ARCH_207S) + #endif /* CONFIG_PPC_BOOK3S_64 */ /* diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index 89b7f821f6c..002d5176414 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -19,6 +19,7 @@ #include "booke.h" #include "e500.h" +#define XOP_DCBTLS 166 #define XOP_MSGSND 206 #define XOP_MSGCLR 238 #define XOP_TLBIVAX 786 @@ -103,6 +104,15 @@ static int kvmppc_e500_emul_ehpriv(struct kvm_run *run, struct kvm_vcpu *vcpu, return emulated; } +static int kvmppc_e500_emul_dcbtls(struct kvm_vcpu *vcpu) +{ + struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); + + /* Always fail to lock the cache */ + vcpu_e500->l1csr0 |= L1CSR0_CUL; + return EMULATE_DONE; +} + int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int inst, int *advance) { @@ -116,6 +126,10 @@ int kvmppc_core_emulate_op_e500(struct kvm_run *run, struct kvm_vcpu *vcpu, case 31: switch (get_xop(inst)) { + case XOP_DCBTLS: + emulated = kvmppc_e500_emul_dcbtls(vcpu); + break; + #ifdef CONFIG_KVM_E500MC case XOP_MSGSND: emulated = kvmppc_e500_emul_msgsnd(vcpu, rb); @@ -222,6 +236,7 @@ int kvmppc_core_emulate_mtspr_e500(struct kvm_vcpu *vcpu, int sprn, ulong spr_va break; case SPRN_L1CSR1: vcpu_e500->l1csr1 = spr_val; + vcpu_e500->l1csr1 &= ~(L1CSR1_ICFI | L1CSR1_ICLFR); break; case SPRN_HID0: vcpu_e500->hid0 = spr_val; diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c index c2b887be2c2..da86d9ba347 100644 --- a/arch/powerpc/kvm/emulate.c +++ b/arch/powerpc/kvm/emulate.c @@ -97,10 +97,10 @@ static int kvmppc_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs) switch (sprn) { case SPRN_SRR0: - vcpu->arch.shared->srr0 = spr_val; + kvmppc_set_srr0(vcpu, spr_val); break; case SPRN_SRR1: - vcpu->arch.shared->srr1 = spr_val; + kvmppc_set_srr1(vcpu, spr_val); break; /* XXX We need to context-switch the timebase for @@ -114,16 +114,16 @@ static int kvmppc_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs) break; case SPRN_SPRG0: - vcpu->arch.shared->sprg0 = spr_val; + kvmppc_set_sprg0(vcpu, spr_val); break; case SPRN_SPRG1: - vcpu->arch.shared->sprg1 = spr_val; + kvmppc_set_sprg1(vcpu, spr_val); break; case SPRN_SPRG2: - vcpu->arch.shared->sprg2 = spr_val; + kvmppc_set_sprg2(vcpu, spr_val); break; case SPRN_SPRG3: - vcpu->arch.shared->sprg3 = spr_val; + kvmppc_set_sprg3(vcpu, spr_val); break; /* PIR can legally be written, but we ignore it */ @@ -150,10 +150,10 @@ static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt) switch (sprn) { case SPRN_SRR0: - spr_val = vcpu->arch.shared->srr0; + spr_val = kvmppc_get_srr0(vcpu); break; case SPRN_SRR1: - spr_val = vcpu->arch.shared->srr1; + spr_val = kvmppc_get_srr1(vcpu); break; case SPRN_PVR: spr_val = vcpu->arch.pvr; @@ -173,16 +173,16 @@ static int kvmppc_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt) break; case SPRN_SPRG0: - spr_val = vcpu->arch.shared->sprg0; + spr_val = kvmppc_get_sprg0(vcpu); break; case SPRN_SPRG1: - spr_val = vcpu->arch.shared->sprg1; + spr_val = kvmppc_get_sprg1(vcpu); break; case SPRN_SPRG2: - spr_val = vcpu->arch.shared->sprg2; + spr_val = kvmppc_get_sprg2(vcpu); break; case SPRN_SPRG3: - spr_val = vcpu->arch.shared->sprg3; + spr_val = kvmppc_get_sprg3(vcpu); break; /* Note: SPRG4-7 are user-readable, so we don't get * a trap. */ diff --git a/arch/powerpc/kvm/mpic.c b/arch/powerpc/kvm/mpic.c index efbd9962a20..b68d0dc9479 100644 --- a/arch/powerpc/kvm/mpic.c +++ b/arch/powerpc/kvm/mpic.c @@ -126,6 +126,8 @@ static int openpic_cpu_write_internal(void *opaque, gpa_t addr, u32 val, int idx); static int openpic_cpu_read_internal(void *opaque, gpa_t addr, u32 *ptr, int idx); +static inline void write_IRQreg_idr(struct openpic *opp, int n_IRQ, + uint32_t val); enum irq_type { IRQ_TYPE_NORMAL = 0, @@ -528,7 +530,6 @@ static void openpic_reset(struct openpic *opp) /* Initialise IRQ sources */ for (i = 0; i < opp->max_irq; i++) { opp->src[i].ivpr = opp->ivpr_reset; - opp->src[i].idr = opp->idr_reset; switch (opp->src[i].type) { case IRQ_TYPE_NORMAL: @@ -543,6 +544,8 @@ static void openpic_reset(struct openpic *opp) case IRQ_TYPE_FSLSPECIAL: break; } + + write_IRQreg_idr(opp, i, opp->idr_reset); } /* Initialise IRQ destinations */ for (i = 0; i < MAX_CPU; i++) { diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 3cf541a53e2..bab20f41044 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -125,6 +125,27 @@ int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) } EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter); +#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) +static void kvmppc_swab_shared(struct kvm_vcpu *vcpu) +{ + struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared; + int i; + + shared->sprg0 = swab64(shared->sprg0); + shared->sprg1 = swab64(shared->sprg1); + shared->sprg2 = swab64(shared->sprg2); + shared->sprg3 = swab64(shared->sprg3); + shared->srr0 = swab64(shared->srr0); + shared->srr1 = swab64(shared->srr1); + shared->dar = swab64(shared->dar); + shared->msr = swab64(shared->msr); + shared->dsisr = swab32(shared->dsisr); + shared->int_pending = swab32(shared->int_pending); + for (i = 0; i < ARRAY_SIZE(shared->sr); i++) + shared->sr[i] = swab32(shared->sr[i]); +} +#endif + int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) { int nr = kvmppc_get_gpr(vcpu, 11); @@ -135,7 +156,7 @@ int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); unsigned long r2 = 0; - if (!(vcpu->arch.shared->msr & MSR_SF)) { + if (!(kvmppc_get_msr(vcpu) & MSR_SF)) { /* 32 bit mode */ param1 &= 0xffffffff; param2 &= 0xffffffff; @@ -146,8 +167,28 @@ int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) switch (nr) { case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE): { - vcpu->arch.magic_page_pa = param1; - vcpu->arch.magic_page_ea = param2; +#if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) + /* Book3S can be little endian, find it out here */ + int shared_big_endian = true; + if (vcpu->arch.intr_msr & MSR_LE) + shared_big_endian = false; + if (shared_big_endian != vcpu->arch.shared_big_endian) + kvmppc_swab_shared(vcpu); + vcpu->arch.shared_big_endian = shared_big_endian; +#endif + + if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) { + /* + * Older versions of the Linux magic page code had + * a bug where they would map their trampoline code + * NX. If that's the case, remove !PR NX capability. + */ + vcpu->arch.disable_kernel_nx = true; + kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); + } + + vcpu->arch.magic_page_pa = param1 & ~0xfffULL; + vcpu->arch.magic_page_ea = param2 & ~0xfffULL; r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; @@ -375,6 +416,7 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_SPAPR_TCE: case KVM_CAP_PPC_ALLOC_HTAB: case KVM_CAP_PPC_RTAS: + case KVM_CAP_PPC_FIXUP_HCALL: #ifdef CONFIG_KVM_XICS case KVM_CAP_IRQ_XICS: #endif @@ -1015,10 +1057,10 @@ static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) u32 inst_nop = 0x60000000; #ifdef CONFIG_KVM_BOOKE_HV u32 inst_sc1 = 0x44000022; - pvinfo->hcall[0] = inst_sc1; - pvinfo->hcall[1] = inst_nop; - pvinfo->hcall[2] = inst_nop; - pvinfo->hcall[3] = inst_nop; + pvinfo->hcall[0] = cpu_to_be32(inst_sc1); + pvinfo->hcall[1] = cpu_to_be32(inst_nop); + pvinfo->hcall[2] = cpu_to_be32(inst_nop); + pvinfo->hcall[3] = cpu_to_be32(inst_nop); #else u32 inst_lis = 0x3c000000; u32 inst_ori = 0x60000000; @@ -1034,10 +1076,10 @@ static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) * sc * nop */ - pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); - pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); - pvinfo->hcall[2] = inst_sc; - pvinfo->hcall[3] = inst_nop; + pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask)); + pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask)); + pvinfo->hcall[2] = cpu_to_be32(inst_sc); + pvinfo->hcall[3] = cpu_to_be32(inst_nop); #endif pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; diff --git a/arch/powerpc/kvm/trace_pr.h b/arch/powerpc/kvm/trace_pr.h index 8b22e474834..e1357cd8dc1 100644 --- a/arch/powerpc/kvm/trace_pr.h +++ b/arch/powerpc/kvm/trace_pr.h @@ -255,7 +255,7 @@ TRACE_EVENT(kvm_exit, __entry->exit_nr = exit_nr; __entry->pc = kvmppc_get_pc(vcpu); __entry->dar = kvmppc_get_fault_dar(vcpu); - __entry->msr = vcpu->arch.shared->msr; + __entry->msr = kvmppc_get_msr(vcpu); __entry->srr1 = vcpu->arch.shadow_srr1; __entry->last_inst = vcpu->arch.last_inst; ), |