diff options
| author | Alexander Graf <agraf@suse.de> | 2014-04-24 12:51:44 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-05-30 14:26:19 +0200 |
| commit | 860540bc50a174c2dff5e11821375475a5da5f4e (patch) | |
| tree | 69ac545a7e426de358e7fcba81f187f9aeab7d86 /arch | |
| parent | 740f834eb2505e1883b54cfc1644af80834ab6b6 (diff) | |
KVM: PPC: Book3S_32: PR: Access HTAB in big endian
The HTAB is always big endian. We access the guest's HTAB using
copy_from/to_user, but don't yet take care of the fact that we might
be running on an LE host.
Wrap all accesses to the guest HTAB with big endian accessors.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/kvm/book3s_32_mmu.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/powerpc/kvm/book3s_32_mmu.c b/arch/powerpc/kvm/book3s_32_mmu.c index 60fc3f4de25..0e42b167da0 100644 --- a/arch/powerpc/kvm/book3s_32_mmu.c +++ b/arch/powerpc/kvm/book3s_32_mmu.c @@ -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; @@ -233,11 +234,13 @@ 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))) @@ -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; } @@ -269,7 +272,7 @@ 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]; + u32 pte_r = pte1; char __user *addr = (char __user *) (ptegp + (i+1) * sizeof(u32)); /* @@ -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); } } |