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| author |   Bandan Das <bsd@redhat.com> | 2017-05-05 15:25:13 -0400 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2017-05-09 11:54:16 +0200 |
| commit | bab4165e2f031905bd0a2bb8b6ad65c5c8cfa870 (patch) | |
| tree | 266fc7f10baa2e14d42f28ca23ad5f50cad16d7b /arch/x86/kvm/paging_tmpl.h | |
| parent | kvm: nVMX: Validate CR3 target count on nested VM-entry (diff) | |
| download | linux-dev-bab4165e2f031905bd0a2bb8b6ad65c5c8cfa870.tar.xz linux-dev-bab4165e2f031905bd0a2bb8b6ad65c5c8cfa870.zip | |
kvm: x86: Add a hook for arch specific dirty logging emulation
When KVM updates accessed/dirty bits, this hook can be used
to invoke an arch specific function that implements/emulates
dirty logging such as PML.
Signed-off-by: Bandan Das <bsd@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index 314d2071b337..56241746abbd 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -226,6 +226,10 @@ static int FNAME(update_accessed_dirty_bits)(struct kvm_vcpu *vcpu, if (level == walker->level && write_fault && !(pte & PT_GUEST_DIRTY_MASK)) { trace_kvm_mmu_set_dirty_bit(table_gfn, index, sizeof(pte)); +#if PTTYPE == PTTYPE_EPT + if (kvm_arch_write_log_dirty(vcpu)) + return -EINVAL; +#endif pte |= PT_GUEST_DIRTY_MASK; } if (pte == orig_pte) |