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KVM: SEV: Rename kvm_ghcb_get_sw_exit_code() to kvm_get_cached_sw_exit_code()

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Rename kvm_ghcb_get_sw_exit_code() to kvm_get_cached_sw_exit_code() to make
it clear that KVM is getting the cached value, not reading directly from
the guest-controlled GHCB.  More importantly, vacating
kvm_ghcb_get_sw_exit_code() will allow adding a KVM-specific macro-built
kvm_ghcb_get_##field() helper to read values from the GHCB.

No functional change intended.

Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20250919223258.1604852-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson
2025-09-19 15:32:08 -07:00
parent fc55b4cda0
commit e0ff302b79
1 changed files with 4 additions and 4 deletions
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arch/x86/kvm/svm/sev.c
+4 -4
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@@ -3220,7 +3220,7 @@ skip_vmsa_free:
kvfree(svm->sev_es.ghcb_sa);
}
static u64 kvm_ghcb_get_sw_exit_code(struct vmcb_control_area *control)
static u64 kvm_get_cached_sw_exit_code(struct vmcb_control_area *control)
{
return (((u64)control->exit_code_hi) << 32) | control->exit_code;
}
@@ -3246,7 +3246,7 @@ static void dump_ghcb(struct vcpu_svm *svm)
*/
pr_err("GHCB (GPA=%016llx) snapshot:\n", svm->vmcb->control.ghcb_gpa);
pr_err("%-20s%016llx is_valid: %u\n", "sw_exit_code",
kvm_ghcb_get_sw_exit_code(control), kvm_ghcb_sw_exit_code_is_valid(svm));
kvm_get_cached_sw_exit_code(control), kvm_ghcb_sw_exit_code_is_valid(svm));
pr_err("%-20s%016llx is_valid: %u\n", "sw_exit_info_1",
control->exit_info_1, kvm_ghcb_sw_exit_info_1_is_valid(svm));
pr_err("%-20s%016llx is_valid: %u\n", "sw_exit_info_2",
@@ -3335,7 +3335,7 @@ static int sev_es_validate_vmgexit(struct vcpu_svm *svm)
* Retrieve the exit code now even though it may not be marked valid
* as it could help with debugging.
*/
exit_code = kvm_ghcb_get_sw_exit_code(control);
exit_code = kvm_get_cached_sw_exit_code(control);
/* Only GHCB Usage code 0 is supported */
if (svm->sev_es.ghcb->ghcb_usage) {
@@ -4340,7 +4340,7 @@ int sev_handle_vmgexit(struct kvm_vcpu *vcpu)
svm_vmgexit_success(svm, 0);
exit_code = kvm_ghcb_get_sw_exit_code(control);
exit_code = kvm_get_cached_sw_exit_code(control);
switch (exit_code) {
case SVM_VMGEXIT_MMIO_READ:
ret = setup_vmgexit_scratch(svm, true, control->exit_info_2);