On 05/12/2010 11:40 AM, Sheng Yang wrote:
Only modifying some bits of CR0/CR4 needs paging mode switch.Modify EFER.NXE bit would result in reserved bit updates. Signed-off-by: Sheng Yang<sh...@linux.intel.com> --- arch/x86/kvm/x86.c | 16 ++++++++++++++-- 1 files changed, 14 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 764f89b..f442da2 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -416,6 +416,10 @@ out: static int __kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) { + unsigned long old_cr0 = kvm_read_cr0(vcpu); + unsigned long update_bits = X86_CR0_PG | X86_CR0_WP | + X86_CR0_CD | X86_CR0_NW; +
CR0_WP... -- Do not meddle in the internals of kernels, for they are subtle and quick to panic. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
