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| author | Avi Kivity <avi@qumranet.com> | 2007-01-05 16:36:44 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2007-01-05 23:55:25 -0800 |
| commit | 815af8d42ee3f844c0ceaf2104bd9c6a0bb1e26c (patch) | |
| tree | cbb21a8efea0fb3fbd94689546b2f97e11dbf9d9 /drivers/kvm/mmu.c | |
| parent | 374cbac0333ddf5cf1c6637efaf7f3adcc67fd75 (diff) | |
| download | talos-op-linux-815af8d42ee3f844c0ceaf2104bd9c6a0bb1e26c.tar.gz talos-op-linux-815af8d42ee3f844c0ceaf2104bd9c6a0bb1e26c.zip | |
[PATCH] KVM: MMU: Let the walker extract the target page gfn from the pte
This fixes a problem where set_pte_common() looked for shadowed pages based on
the page directory gfn (a huge page) instead of the actual gfn being mapped.
Signed-off-by: Avi Kivity <avi@qumranet.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/kvm/mmu.c')
| -rw-r--r-- | drivers/kvm/mmu.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c index ba813f49f8aa..ceae25bfd4b5 100644 --- a/drivers/kvm/mmu.c +++ b/drivers/kvm/mmu.c @@ -752,7 +752,8 @@ static inline void set_pte_common(struct kvm_vcpu *vcpu, u64 *shadow_pte, gpa_t gaddr, int dirty, - u64 access_bits) + u64 access_bits, + gfn_t gfn) { hpa_t paddr; @@ -779,10 +780,10 @@ static inline void set_pte_common(struct kvm_vcpu *vcpu, if (access_bits & PT_WRITABLE_MASK) { struct kvm_mmu_page *shadow; - shadow = kvm_mmu_lookup_page(vcpu, gaddr >> PAGE_SHIFT); + shadow = kvm_mmu_lookup_page(vcpu, gfn); if (shadow) { pgprintk("%s: found shadow page for %lx, marking ro\n", - __FUNCTION__, (gfn_t)(gaddr >> PAGE_SHIFT)); + __FUNCTION__, gfn); access_bits &= ~PT_WRITABLE_MASK; *shadow_pte &= ~PT_WRITABLE_MASK; } |
