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KVM: async_pf: Force a nested vmexit if the injected #PF is async_pf

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Add an nested_apf field to vcpu->arch.exception to identify an async page
fault, and constructs the expected vm-exit information fields. Force a
nested VM exit from nested_vmx_check_exception() if the injected #PF is
async page fault.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
Wanpeng Li
2017-07-13 18:30:41 -07:00
committed by Radim Krčmář
parent 1261bfa326
commit adfe20fb48
5 changed files with 35 additions and 10 deletions
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1
arch/x86/include/asm/kvm_emulate.h
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@@ -23,6 +23,7 @@ struct x86_exception {
u16 error_code;
bool nested_page_fault;
u64 address; /* cr2 or nested page fault gpa */
u8 async_page_fault;
};
/*

2
arch/x86/include/asm/kvm_host.h
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@@ -550,6 +550,7 @@ struct kvm_vcpu_arch {
bool reinject;
u8 nr;
u32 error_code;
u8 nested_apf;
} exception;
struct kvm_queued_interrupt {
@@ -651,6 +652,7 @@ struct kvm_vcpu_arch {
u32 id;
bool send_user_only;
u32 host_apf_reason;
unsigned long nested_apf_token;
} apf;
/* OSVW MSRs (AMD only) */