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KVM: x86 emulator: reject SYSENTER in compatibility mode on AMD guests
authorAvi Kivity <avi@redhat.com>
Wed, 1 Feb 2012 10:23:21 +0000 (12:23 +0200)
committerAvi Kivity <avi@redhat.com>
Mon, 5 Mar 2012 12:57:20 +0000 (14:57 +0200)
commit1a18a69b762374c423305772500f36eb8984ca52
treedf0c7276bac2b3899a7d033fa24783e84e7817abtree | snapshot (tar.gz zip)
parenta52315e1d549dad80ff443151927226c11fd8c2bcommit | diff
KVM: x86 emulator: reject SYSENTER in compatibility mode on AMD guests

If the guest thinks it's an AMD, it will not have prepared the SYSENTER MSRs,
and if the guest executes SYSENTER in compatibility mode, it will fails.

Detect this condition and #UD instead, like the spec says.

Signed-off-by: Avi Kivity <avi@redhat.com>
arch/x86/kvm/emulate.c diff | blob | blame | history