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| author | Maxim Levitsky <mlevitsk@redhat.com> | 2023-09-28 20:33:52 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2023-10-12 18:08:59 +0300 |
| commit | 2dcf37abf9d3aab7f975002d29fc7c17272def38 (patch) | |
| tree | c2aed8d85f884397d7373084764e8fd55003f475 /arch/x86/include/asm/svm.h | |
| parent | b65235f6e102354ccafda601eaa1c5bef5284d21 (diff) | |
| download | linux-2dcf37abf9d3aab7f975002d29fc7c17272def38.tar.xz | |
x86: KVM: SVM: add support for Invalid IPI Vector interception
In later revisions of AMD's APM, there is a new 'incomplete IPI' exit code:
"Invalid IPI Vector - The vector for the specified IPI was set to an
illegal value (VEC < 16)"
Note that tests on Zen2 machine show that this VM exit doesn't happen and
instead AVIC just does nothing.
Add support for this exit code by doing nothing, instead of filling
the kernel log with errors.
Also replace an unthrottled 'pr_err()' if another unknown incomplete
IPI exit happens with vcpu_unimpl()
(e.g in case AMD adds yet another 'Invalid IPI' exit reason)
Cc: <stable@vger.kernel.org>
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20230928173354.217464-3-mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/svm.h')
| -rw-r--r-- | arch/x86/include/asm/svm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/svm.h b/arch/x86/include/asm/svm.h index 19bf955b67e0..3ac0ffc4f3e2 100644 --- a/arch/x86/include/asm/svm.h +++ b/arch/x86/include/asm/svm.h @@ -268,6 +268,7 @@ enum avic_ipi_failure_cause { AVIC_IPI_FAILURE_TARGET_NOT_RUNNING, AVIC_IPI_FAILURE_INVALID_TARGET, AVIC_IPI_FAILURE_INVALID_BACKING_PAGE, + AVIC_IPI_FAILURE_INVALID_IPI_VECTOR, }; #define AVIC_PHYSICAL_MAX_INDEX_MASK GENMASK_ULL(8, 0) |