From: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
So far the processor compatibility check is not done on resume. It should
be done. The resume is called for resuming from S3/S4. CPUs can be
replaced or the kernel can resume from S4 on a different machine. So
compatibility check is desirable.
Signed-off-by: Isaku Yamahata <isaku.yamahata@xxxxxxxxx>
---
virt/kvm/kvm_main.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 0ac00c711384..fc55447c4dba 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -5715,6 +5715,13 @@ static int kvm_suspend(void)
static void kvm_resume(void)
{
+ if (kvm_arch_check_processor_compat())
+ /*
+ * No warning here because kvm_arch_check_processor_compat()
+ * would have warned with more information.
+ */
+ return; /* FIXME: disable KVM */
+
if (kvm_usage_count) {
lockdep_assert_not_held(&kvm_count_lock);
hardware_enable_nolock((void *)__func__);
--
2.25.1
