KVM: x86: Add function for vectoring error generation

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Extract VMX code for unhandleable VM-Exit during vectoring into
vendor-agnostic function so that boiler-plate code can be shared by SVM.

To avoid unnecessarily complexity in the helper, unconditionally report a
GPA to userspace instead of having a conditional entry.  For exits that
don't report a GPA, i.e. everything except EPT Misconfig, simply report
KVM's "invalid GPA".

Signed-off-by: Ivan Orlov <iorlov@amazon.com>
Link: https://lore.kernel.org/r/20241217181458.68690-2-iorlov@amazon.com
[sean: clarify that the INVALID_GPA logic is new]
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Ivan Orlov 2024-12-17 18:14:52 +00:00 • committed by Sean Christopherson

parent 871ac338ef

commit 11c98fa07a

3 changed files with 29 additions and 12 deletions

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2

arch/x86/include/asm/kvm_host.h

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17

arch/x86/kvm/vmx/vmx.c

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22

arch/x86/kvm/x86.c

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