tree ef62742a58747275e7d852dec6fdc8526a4f14fd
parent 79a8059d244e99454e474902e4325ee9b50e9178
author Paolo Bonzini <pbonzini@redhat.com> 1442955734 +0200
committer Paolo Bonzini <pbonzini@redhat.com> 1443169888 +0200

KVM: x86: use correct page table format to check nested page table reserved bits

Intel CPUID on AMD host or vice versa is a weird case, but it can
happen.  Handle it by checking the host CPU vendor instead of the
guest's in reset_tdp_shadow_zero_bits_mask.  For speed, the
check uses the fact that Intel EPT has an X (executable) bit while
AMD NPT has NX.

Reported-by: Borislav Petkov <bp@alien8.de>
Tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>