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virt-host-validate: Move AMD SEV into a separate func

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The code that validates AMD SEV is going to be expanded soon.
Move it into its own function to avoid lengthening
virHostValidateSecureGuests() where the code lives now, even
more.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Michal Privoznik 2024-06-24 09:22:16 +02:00
parent fbe97ee17d
commit 30c01e535d
1 changed files with 33 additions and 22 deletions
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55
tools/virt-host-validate-common.c
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@ -379,6 +379,36 @@ bool virHostKernelModuleIsLoaded(const char *module)
}
static int
virHostValidateAMDSev(virValidateLevel level)
{
g_autofree char *mod_value = NULL;
if (virFileReadValueString(&mod_value, "/sys/module/kvm_amd/parameters/sev") < 0) {
virValidateFail(level, "AMD Secure Encrypted Virtualization not "
"supported by the currently used kernel");
return VIR_VALIDATE_FAILURE(level);
}
if (mod_value[0] != '1' && mod_value[0] != 'Y' && mod_value[0] != 'y') {
virValidateFail(level,
"AMD Secure Encrypted Virtualization appears to be "
"disabled in kernel. Add kvm_amd.sev=1 "
"to the kernel cmdline arguments");
return VIR_VALIDATE_FAILURE(level);
}
if (!virFileExists("/dev/sev")) {
virValidateFail(level,
"AMD Secure Encrypted Virtualization appears to be "
"disabled in firmware.");
return VIR_VALIDATE_FAILURE(level);
}
return 1;
}
int virHostValidateSecureGuests(const char *hvname,
virValidateLevel level)
{
@ -388,7 +418,6 @@ int virHostValidateSecureGuests(const char *hvname,
virArch arch = virArchFromHost();
g_autofree char *cmdline = NULL;
static const char *kIBMValues[] = {"y", "Y", "on", "ON", "oN", "On", "1"};
g_autofree char *mod_value = NULL;
flags = virHostValidateGetCPUFlags();
@ -430,29 +459,11 @@ int virHostValidateSecureGuests(const char *hvname,
return VIR_VALIDATE_FAILURE(level);
}
} else if (hasAMDSev) {
if (virFileReadValueString(&mod_value, "/sys/module/kvm_amd/parameters/sev") < 0) {
virValidateFail(level, "AMD Secure Encrypted Virtualization not "
"supported by the currently used kernel");
return VIR_VALIDATE_FAILURE(level);
}
int rc = virHostValidateAMDSev(level);
if (mod_value[0] != '1' && mod_value[0] != 'Y' && mod_value[0] != 'y') {
virValidateFail(level,
"AMD Secure Encrypted Virtualization appears to be "
"disabled in kernel. Add kvm_amd.sev=1 "
"to the kernel cmdline arguments");
return VIR_VALIDATE_FAILURE(level);
}
if (virFileExists("/dev/sev")) {
if (rc > 0)
virValidatePass();
return 1;
} else {
virValidateFail(level,
"AMD Secure Encrypted Virtualization appears to be "
"disabled in firmware.");
return VIR_VALIDATE_FAILURE(level);
}
return rc;
}
virValidateFail(level,