@@ -16,6 +16,7 @@
#define KVM_SDEI_MAX_VCPUS 512
#define KVM_SDEI_INVALID_NUM 0
#define KVM_SDEI_DEFAULT_NUM 0x40400000
+#define KVM_SDEI_ASYNC_PF_NUM 0x40400001
struct kvm_sdei_event_state {
__u64 num;
@@ -29,6 +29,8 @@ menuconfig KVM
select SRCU
select KVM_VFIO
select HAVE_KVM_EVENTFD
+ select KVM_ASYNC_PF
+ select KVM_ASYNC_PF_SLOT
select HAVE_KVM_IRQFD
select HAVE_KVM_MSI
select HAVE_KVM_IRQCHIP
@@ -281,6 +281,10 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_ARM_SDEI:
r = 1;
break;
+ case KVM_CAP_ASYNC_PF:
+ case KVM_CAP_ASYNC_PF_INT:
+ r = IS_ENABLED(CONFIG_KVM_ASYNC_PF) ? 1 : 0;
+ break;
default:
r = 0;
}
@@ -19,6 +19,11 @@ static struct kvm_sdei_event_state defined_kse[] = {
1,
SDEI_EVENT_PRIORITY_CRITICAL
},
+ { KVM_SDEI_ASYNC_PF_NUM,
+ SDEI_EVENT_TYPE_PRIVATE,
+ 1,
+ SDEI_EVENT_PRIORITY_CRITICAL
+ },
};
static struct kvm_sdei_event *kvm_sdei_find_event(struct kvm *kvm,
This exports the asynchronous page fault capability: * Identify capability KVM_CAP_ASYNC_{PF, PF_INT}. * Standardize SDEI event for asynchronous page fault. * Enable kernel config CONFIG_KVM_ASYNC_{PF, PF_SLOT}. Signed-off-by: Gavin Shan <gshan@redhat.com> --- arch/arm64/include/uapi/asm/kvm_sdei.h | 1 + arch/arm64/kvm/Kconfig | 2 ++ arch/arm64/kvm/arm.c | 4 ++++ arch/arm64/kvm/sdei.c | 5 +++++ 4 files changed, 12 insertions(+)