Luckily, hvm_hypervisor_cpuid_leaf() and vmx_hypervisor_cpuid_leaf() are safe
to execute in the context of a PV guest, but HVM-specific feature flags
shouldn't be visible to PV guests.
Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
---
CC: Jan Beulich <jbeul...@suse.com>
CC: Wei Liu <wei.l...@citrix.com>
---
xen/arch/x86/traps.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/xen/arch/x86/traps.c b/xen/arch/x86/traps.c
index 14abb62..d56d76e 100644
--- a/xen/arch/x86/traps.c
+++ b/xen/arch/x86/traps.c
@@ -928,6 +928,11 @@ int cpuid_hypervisor_leaves( uint32_t idx, uint32_t
sub_idx,
break;
case 4:
+ if ( !has_hvm_container_domain(currd) )
+ {
+ *eax = *ebx = *ecx = *edx = 0;
+ break;
+ }
hvm_hypervisor_cpuid_leaf(sub_idx, eax, ebx, ecx, edx);
break;
--
2.1.4
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