On 12/11/24 18:20, Sean Christopherson wrote:
On Mon, Nov 11, 2024, Ivan Orlov wrote:
Currently, the situation when guest accesses MMIO during vectoring is
handled differently on VMX and SVM: on VMX KVM returns internal error,
when SVM goes into infinite loop trying to deliver an event again and
again.
This patch series eliminates this difference by returning a KVM internal
error when guest performs MMIO during vectoring for both VMX and SVM.
Also, introduce a selftest test case which covers the error handling
mentioned above.
V1 -> V2:
- Make commit messages more brief, avoid using pronouns
- Extract SVM error handling into a separate commit
- Introduce a new X86EMUL_ return type and detect the unhandleable
vectoring error in vendor-specific check_emulate_instruction instead of
handling it in the common MMU code (which is specific for cached MMIO)
Ivan Orlov (6):
KVM: x86: Add function for vectoring error generation
KVM: x86: Add emulation status for vectoring during MMIO
KVM: VMX: Handle vectoring error in check_emulate_instruction
KVM: SVM: Handle MMIO during vectroing error
selftests: KVM: extract lidt into helper function
selftests: KVM: Add test case for MMIO during vectoring
Minor nits throughout, but unless you disagree with my suggestions, I'll fix them
up when applying, i.e. no need to post a v3.
Hi Sean,
Thanks a lot for the review :)
I don't have any conceptual disagreement with your suggestions, so
please feel free to fix them when applying the patches. Thanks!
--
Kind regards,
Ivan Orlov
