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kvm: x86: Add has_payload and payload to kvm_queued_exception

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The payload associated with a #PF exception is the linear address of
the fault to be loaded into CR2 when the fault is delivered. The
payload associated with a #DB exception is a mask of the DR6 bits to
be set (or in the case of DR6.RTM, cleared) when the fault is
delivered. Add fields has_payload and payload to kvm_queued_exception
to track payloads for pending exceptions.

The new fields are introduced here, but for now, they are just cleared.

Reported-by: Jim Mattson <jmattson@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Jim Mattson
2018-10-16 14:29:19 -07:00
committed by Paolo Bonzini
parent bba9ce58d9
commit c851436a34
2 changed files with 10 additions and 0 deletions
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2
arch/x86/include/asm/kvm_host.h
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@@ -628,6 +628,8 @@ struct kvm_vcpu_arch {
bool has_error_code;
u8 nr;
u32 error_code;
unsigned long payload;
bool has_payload;
u8 nested_apf;
} exception;