On Thu, Nov 13, 2025 at 02:56:16PM -0800, Sean Christopherson wrote:
> Fold svm_check_exit_valid() and svm_handle_invalid_exit() into their sole
> caller, svm_invoke_exit_handler(), as having tiny single-use helpers makes
> the code unncessarily difficult to follow. This will also allow for
> additional cleanups in svm_invoke_exit_handler().
>
> No functional change intended.
>
> Suggested-by: Yosry Ahmed <yosry.ahmed@linux.dev>
> Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Yosry Ahmed <yosry.ahmed@linux.dev>
> ---
> arch/x86/kvm/svm/svm.c | 25 ++++++++++---------------
> 1 file changed, 10 insertions(+), 15 deletions(-)
>
> diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
> index 52b759408853..638a67ef0c37 100644
> --- a/arch/x86/kvm/svm/svm.c
> +++ b/arch/x86/kvm/svm/svm.c
> @@ -3433,23 +3433,13 @@ static void dump_vmcb(struct kvm_vcpu *vcpu)
> sev_free_decrypted_vmsa(vcpu, save);
> }
>
> -static bool svm_check_exit_valid(u64 exit_code)
> -{
> - return (exit_code < ARRAY_SIZE(svm_exit_handlers) &&
> - svm_exit_handlers[exit_code]);
> -}
> -
> -static int svm_handle_invalid_exit(struct kvm_vcpu *vcpu, u64 exit_code)
> -{
> - dump_vmcb(vcpu);
> - kvm_prepare_unexpected_reason_exit(vcpu, exit_code);
> - return 0;
> -}
> -
> int svm_invoke_exit_handler(struct kvm_vcpu *vcpu, u64 exit_code)
> {
> - if (!svm_check_exit_valid(exit_code))
> - return svm_handle_invalid_exit(vcpu, exit_code);
> + if (exit_code >= ARRAY_SIZE(svm_exit_handlers))
> + goto unexpected_vmexit;
> +
> + if (!svm_exit_handlers[exit_code])
> + goto unexpected_vmexit;
>
> #ifdef CONFIG_MITIGATION_RETPOLINE
> if (exit_code == SVM_EXIT_MSR)
> @@ -3468,6 +3458,11 @@ int svm_invoke_exit_handler(struct kvm_vcpu *vcpu, u64 exit_code)
> #endif
> #endif
> return svm_exit_handlers[exit_code](vcpu);
> +
> +unexpected_vmexit:
> + dump_vmcb(vcpu);
> + kvm_prepare_unexpected_reason_exit(vcpu, exit_code);
> + return 0;
> }
>
> static void svm_get_exit_info(struct kvm_vcpu *vcpu, u32 *reason,
> --
> 2.52.0.rc1.455.g30608eb744-goog
>