diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 397701d39ae..9f97dbe25e4 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -345,6 +345,8 @@ void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu) void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr) { + u32 host_pvr; + vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB; vcpu->arch.pvr = pvr; #ifdef CONFIG_PPC_BOOK3S_64 @@ -376,6 +378,23 @@ void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr) /* 32 bit Book3S always has 32 byte dcbz */ vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32; #endif + + /* On some CPUs we can execute paired single operations natively */ + asm ( "mfpvr %0" : "=r"(host_pvr)); + switch (host_pvr) { + case 0x00080200: /* lonestar 2.0 */ + case 0x00088202: /* lonestar 2.2 */ + case 0x70000100: /* gekko 1.0 */ + case 0x00080100: /* gekko 2.0 */ + case 0x00083203: /* gekko 2.3a */ + case 0x00083213: /* gekko 2.3b */ + case 0x00083204: /* gekko 2.4 */ + case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */ + case 0x00087200: /* broadway */ + vcpu->arch.hflags |= BOOK3S_HFLAG_NATIVE_PS; + /* Enable HID2.PSE - in case we need it later */ + mtspr(SPRN_HID2_GEKKO, mfspr(SPRN_HID2_GEKKO) | (1 << 29)); + } } /* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To |