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SUSE:SLE-12-SP1:Update
xen.4995
582c35ee-x86-traps-dont-call-hvm_hypervisor_cpu...
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File 582c35ee-x86-traps-dont-call-hvm_hypervisor_cpuid_leaf-for-PV.patch of Package xen.4995
# Commit 0f43883193da76fc928e836e319c3172f394e0f3 # Date 2016-11-16 10:33:18 +0000 # Author Andrew Cooper <andrew.cooper3@citrix.com> # Committer Andrew Cooper <andrew.cooper3@citrix.com> x86/traps: Don't call hvm_hypervisor_cpuid_leaf() for PV guests 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.cooper3@citrix.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> --- a/xen/arch/x86/traps.c +++ b/xen/arch/x86/traps.c @@ -743,6 +743,11 @@ int cpuid_hypervisor_leaves( uint32_t id break; case 4: + if ( !has_hvm_container_domain(d) ) + { + *eax = *ebx = *ecx = *edx = 0; + break; + } hvm_hypervisor_cpuid_leaf(sub_idx, eax, ebx, ecx, edx); break;
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