[PATCH v5 12/12] Send async PF when guest is not in userspace too.

[Gleb Natapov <gleb@redhat.com>]

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

Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
 arch/x86/kvm/mmu.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 12d1a7b..ed87b1c 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2361,7 +2361,13 @@ static bool can_do_async_pf(struct kvm_vcpu *vcpu)
 	if (!vcpu->arch.apf_data || kvm_event_needs_reinjection(vcpu))
 		return false;
 
-	return !!kvm_x86_ops->get_cpl(vcpu);
+	if (vcpu->arch.apf_send_user_only)
+		return !!kvm_x86_ops->get_cpl(vcpu);
+
+	if (!kvm_x86_ops->interrupt_allowed(vcpu))
+		return false;
+
+	return true;
 }
 
 static int tdp_page_fault(struct kvm_vcpu *vcpu, gva_t gpa, u32 error_code,
-- 
1.7.1

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