[PATCH 2/2] qemu: Validate TPM TIS device

[Jim Fehlig <jfehlig@xxxxxxxx>]

TPM devices with model='tpm-tis' are only valid with x86 and aarch64
virt machines. Add a check to qemuValidateDomainDeviceDefTPM() to
ensure VIR_DOMAIN_TPM_MODEL_TIS is only used with these architectures.

Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx>
---

The conditional is a bit distasteful, but so far I haven't come up with
anything better. I aslo worry about future architectures gaining support
for emulated TPM TIS devices.

 src/qemu/qemu_validate.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index a70737327e..d6ff5e5eef 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -4299,6 +4299,13 @@ qemuValidateDomainDeviceDefTPM(virDomainTPMDef *tpm,
 
     switch (tpm->model) {
     case VIR_DOMAIN_TPM_MODEL_TIS:
+        if (!ARCH_IS_X86(def->os.arch) && (def->os.arch != VIR_ARCH_AARCH64)) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("TPM model %s is only available for "
+                             "x86 and aarch64 guests"),
+                          virDomainTPMModelTypeToString(tpm->model));
+            return -1;
+        }
         flag = QEMU_CAPS_DEVICE_TPM_TIS;
         break;
     case VIR_DOMAIN_TPM_MODEL_CRB:
-- 
2.29.2