diff options
| author |   Avi Kivity <avi@redhat.com> | 2008-12-21 19:36:59 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-03-24 11:02:51 +0200 |
| commit | e2078318042569682d0496cfd7bd962a766e82b1 (patch) | |
| tree | d5f6d2d2c25471f61801f8d0a01a0ddf8d257500 /arch/x86/kvm | |
| parent | KVM: MMU: Segregate mmu pages created with different cr4.pge settings (diff) | |
| download | linux-dev-e2078318042569682d0496cfd7bd962a766e82b1.tar.xz linux-dev-e2078318042569682d0496cfd7bd962a766e82b1.zip | |
KVM: MMU: Initialize a shadow page's global attribute from cr4.pge
If cr4.pge is cleared, we ought to treat any ptes in the page as non-global.
This allows us to remove the check from set_spte().
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index f15023c11fea..5f03ec324e35 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -797,7 +797,6 @@ static struct kvm_mmu_page *kvm_mmu_alloc_page(struct kvm_vcpu *vcpu, ASSERT(is_empty_shadow_page(sp->spt)); bitmap_zero(sp->slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS); sp->multimapped = 0; - sp->global = 1; sp->parent_pte = parent_pte; --vcpu->kvm->arch.n_free_mmu_pages; return sp; @@ -1241,6 +1240,7 @@ static struct kvm_mmu_page *kvm_mmu_get_page(struct kvm_vcpu *vcpu, pgprintk("%s: adding gfn %lx role %x\n", __func__, gfn, role.word); sp->gfn = gfn; sp->role = role; + sp->global = role.cr4_pge; hlist_add_head(&sp->hash_link, bucket); if (!metaphysical) { if (rmap_write_protect(vcpu->kvm, gfn)) @@ -1668,8 +1668,6 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *shadow_pte, u64 mt_mask = shadow_mt_mask; struct kvm_mmu_page *sp = page_header(__pa(shadow_pte)); - if (!(vcpu->arch.cr4 & X86_CR4_PGE)) - global = 0; if (!global && sp->global) { sp->global = 0; if (sp->unsync) { |