[PATCH v7 12/12] Send async PF when guest is not in userspace too.

Gleb Natapov
2010-10-14T09:22:56Z

If guest indicates that it can handle async pf in kernel mode too send
it, but only if interrupts are enabled.

Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
arch/x86/kvm/x86.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1e442df..51cff2f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6248,7 +6248,8 @@ void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
kvm_add_async_pf_gfn(vcpu, work->arch.gfn);

if (!(vcpu->arch.apf.msr_val & KVM_ASYNC_PF_ENABLED) ||
- kvm_x86_ops->get_cpl(vcpu) == 0)
+ (vcpu->arch.apf.send_user_only &&
+ kvm_x86_ops->get_cpl(vcpu) == 0))
kvm_make_request(KVM_REQ_APF_HALT, vcpu);
else if (!apf_put_user(vcpu, KVM_PV_REASON_PAGE_NOT_PRESENT)) {
vcpu->arch.fault.error_code = 0;
--
1.7.1