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| author |   Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-03-19 17:58:53 +0800 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2010-05-17 12:16:42 +0300 |
| commit | f815bce8940bc28e42e6b924825bb31df2a4bff5 (patch) | |
| tree | 1c3df0f34d93d6f84c82dba30211ddfb08c051b1 /arch/x86/kvm/mmu.c | |
| parent | KVM: x86: document KVM_REQ_PENDING_TIMER usage (diff) | |
| download | linux-dev-f815bce8940bc28e42e6b924825bb31df2a4bff5.tar.xz linux-dev-f815bce8940bc28e42e6b924825bb31df2a4bff5.zip | |
KVM: MMU: check reserved bits only if CR4.PSE=1 or CR4.PAE=1
- Check reserved bits only if CR4.PAE=1 or CR4.PSE=1 when guest #PF occurs
- Fix a typo in reset_rsvds_bits_mask()
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 064c3efb49dc..83d2ebce9ea9 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2297,13 +2297,19 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level) /* no rsvd bits for 2 level 4K page table entries */ context->rsvd_bits_mask[0][1] = 0; context->rsvd_bits_mask[0][0] = 0; + context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[0][0]; + + if (!is_pse(vcpu)) { + context->rsvd_bits_mask[1][1] = 0; + break; + } + if (is_cpuid_PSE36()) /* 36bits PSE 4MB page */ context->rsvd_bits_mask[1][1] = rsvd_bits(17, 21); else /* 32 bits PSE 4MB page */ context->rsvd_bits_mask[1][1] = rsvd_bits(13, 21); - context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[1][0]; break; case PT32E_ROOT_LEVEL: context->rsvd_bits_mask[0][2] = @@ -2316,7 +2322,7 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level) context->rsvd_bits_mask[1][1] = exb_bit_rsvd | rsvd_bits(maxphyaddr, 62) | rsvd_bits(13, 20); /* large page */ - context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[1][0]; + context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[0][0]; break; case PT64_ROOT_LEVEL: context->rsvd_bits_mask[0][3] = exb_bit_rsvd | @@ -2334,7 +2340,7 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, int level) context->rsvd_bits_mask[1][1] = exb_bit_rsvd | rsvd_bits(maxphyaddr, 51) | rsvd_bits(13, 20); /* large page */ - context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[1][0]; + context->rsvd_bits_mask[1][0] = context->rsvd_bits_mask[0][0]; break; } } |