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| author |   Avi Kivity <avi@qumranet.com> | 2008-08-27 20:01:04 +0300 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2008-10-15 10:15:24 +0200 |
| commit | 3201b5d9f0f7ef392886cd76dcd2c69186d9d5cd (patch) | |
| tree | 94c726dfc773f551a9b8ad600193f815b6619d2c | |
| parent | KVM: MMU: Flush tlbs after clearing write permission when accessing dirty log (diff) | |
| download | linux-dev-3201b5d9f0f7ef392886cd76dcd2c69186d9d5cd.tar.xz linux-dev-3201b5d9f0f7ef392886cd76dcd2c69186d9d5cd.zip | |
KVM: MMU: Fix setting the accessed bit on non-speculative sptes
The accessed bit was accidentally turned on in a random flag word, rather
than, the spte itself, which was lucky, since it used the non-EPT compatible
PT_ACCESSED_MASK.
Fix by turning the bit on in the spte and changing it to use the portable
accessed mask.
Signed-off-by: Avi Kivity <avi@qumranet.com>
| -rw-r--r-- | arch/x86/kvm/mmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 853a2889b202..866d7133cad8 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1192,7 +1192,7 @@ static void mmu_set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte, */ spte = shadow_base_present_pte | shadow_dirty_mask; if (!speculative) - pte_access |= PT_ACCESSED_MASK; + spte |= shadow_accessed_mask; if (!dirty) pte_access &= ~ACC_WRITE_MASK; if (pte_access & ACC_EXEC_MASK) |