diff options
| author | Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp> | 2013-03-12 12:44:40 +0400 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-03-14 12:21:10 +0400 |
| commit | 95b0430d1a53541076ffbaf453f8b49a547cceba (patch) | |
| tree | 340dd5870cd20b6b2acef3182dabed47a7a72927 /arch/x86 | |
| parent | 0238ea913c21a89387f93097acfbdfeebc9c9257 (diff) | |
| download | linux-95b0430d1a53541076ffbaf453f8b49a547cceba.tar.xz | |
KVM: MMU: Mark sp mmio cached when creating mmio spte
This will be used not to zap unrelated mmu pages when creating/moving
a memory slot later.
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Takuya Yoshikawa <yoshikawa_takuya_b1@lab.ntt.co.jp>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/mmu.c | 3 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index ef7f4a5cf8c7..9b75cae83d10 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -230,6 +230,7 @@ struct kvm_mmu_page { #endif int write_flooding_count; + bool mmio_cached; }; struct kvm_pio_request { diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index fdacabba6f62..de45ec195346 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -199,8 +199,11 @@ EXPORT_SYMBOL_GPL(kvm_mmu_set_mmio_spte_mask); static void mark_mmio_spte(u64 *sptep, u64 gfn, unsigned access) { + struct kvm_mmu_page *sp = page_header(__pa(sptep)); + access &= ACC_WRITE_MASK | ACC_USER_MASK; + sp->mmio_cached = true; trace_mark_mmio_spte(sptep, gfn, access); mmu_spte_set(sptep, shadow_mmio_mask | access | gfn << PAGE_SHIFT); } |