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| author | Kai Huang <kai.huang@linux.intel.com> | 2015-01-28 05:54:27 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-01-29 17:31:41 +0300 |
| commit | 88178fd4f7187bbe290c5d373fd44aabec891934 (patch) | |
| tree | 997b40341e4dccca84af8a570e33a493120f402d /arch/x86/include/asm/kvm_host.h | |
| parent | 1c91cad42366ce0799ca17e7ad6995418741d012 (diff) | |
| download | linux-88178fd4f7187bbe290c5d373fd44aabec891934.tar.xz | |
KVM: x86: Add new dirty logging kvm_x86_ops for PML
This patch adds new kvm_x86_ops dirty logging hooks to enable/disable dirty
logging for particular memory slot, and to flush potentially logged dirty GPAs
before reporting slot->dirty_bitmap to userspace.
kvm x86 common code calls these hooks when they are available so PML logic can
be hidden to VMX specific. SVM won't be impacted as these hooks remain NULL
there.
Signed-off-by: Kai Huang <kai.huang@linux.intel.com>
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/kvm_host.h')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 67a98d793bf2..57916ecb9b92 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -802,6 +802,31 @@ struct kvm_x86_ops { int (*check_nested_events)(struct kvm_vcpu *vcpu, bool external_intr); void (*sched_in)(struct kvm_vcpu *kvm, int cpu); + + /* + * Arch-specific dirty logging hooks. These hooks are only supposed to + * be valid if the specific arch has hardware-accelerated dirty logging + * mechanism. Currently only for PML on VMX. + * + * - slot_enable_log_dirty: + * called when enabling log dirty mode for the slot. + * - slot_disable_log_dirty: + * called when disabling log dirty mode for the slot. + * also called when slot is created with log dirty disabled. + * - flush_log_dirty: + * called before reporting dirty_bitmap to userspace. + * - enable_log_dirty_pt_masked: + * called when reenabling log dirty for the GFNs in the mask after + * corresponding bits are cleared in slot->dirty_bitmap. + */ + void (*slot_enable_log_dirty)(struct kvm *kvm, + struct kvm_memory_slot *slot); + void (*slot_disable_log_dirty)(struct kvm *kvm, + struct kvm_memory_slot *slot); + void (*flush_log_dirty)(struct kvm *kvm); + void (*enable_log_dirty_pt_masked)(struct kvm *kvm, + struct kvm_memory_slot *slot, + gfn_t offset, unsigned long mask); }; struct kvm_arch_async_pf { |