@@ -8471,6 +8471,13 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
kvm_vcpu_update_apicv(vcpu);
if (kvm_check_request(KVM_REQ_APF_READY, vcpu))
kvm_check_async_pf_completion(vcpu);
+
+ if (kvm_check_request(KVM_REQ_OUT_OF_MEMORY, vcpu)) {
+ vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
+ vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_EMULATION;
+ r = 0;
+ goto out;
+ }
}
if (kvm_check_request(KVM_REQ_EVENT, vcpu) || req_int_win) {
@@ -146,6 +146,7 @@ static inline bool is_error_page(struct page *page)
#define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_PENDING_TIMER 2
#define KVM_REQ_UNHALT 3
+#define KVM_REQ_OUT_OF_MEMORY 4
#define KVM_REQUEST_ARCH_BASE 8
#define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
This request will be used in rare cases when emulation can't continue due to being out of memory, to kill the current VM. Currently only implemented for x86. Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com> --- arch/x86/kvm/x86.c | 7 +++++++ include/linux/kvm_host.h | 1 + 2 files changed, 8 insertions(+)