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| author | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2006-09-29 11:26:33 +0100 |
|---|---|---|
| committer | kfraser@localhost.localdomain <kfraser@localhost.localdomain> | 2006-09-29 11:26:33 +0100 |
| commit | 6a6ea8c94e1622738ff05c9e4676a462b96192a3 (patch) | |
| tree | 72280a324a6c6c3a6b6dd9957f070cb8c1f6c7bd /xen/arch/x86/smp.c | |
| parent | e32782e508a2c786e0e3153fbbd5040b0ef2c8db (diff) | |
| download | xen-6a6ea8c94e1622738ff05c9e4676a462b96192a3.tar.gz xen-6a6ea8c94e1622738ff05c9e4676a462b96192a3.tar.bz2 xen-6a6ea8c94e1622738ff05c9e4676a462b96192a3.zip | |
[HVM][VMX] Clear vmxe when VMX is not enabled.
The current Xen code keeps X86_CR4_VMXE set even if VMXON has not been
executed. The stop_vmx() code assumes that it is possible to call
VMXOFF if X86_CR4_VMXE is set which is not always true. Calling VMXOFF
without VMXON results in an illegal opcode trap, and to avoid this condition
this patch makes sure that X86_CR4_VMXE is only set when VMXON has
been called.
Tested using x86_32 on a Pentium D 930.
Signed-Off-By: Magnus Damm <magnus@valinux.co.jp>
Diffstat (limited to 'xen/arch/x86/smp.c')
0 files changed, 0 insertions, 0 deletions