On Wed, Mar 17, 2010 at 07:17:32PM +0100, Alexander Graf wrote: > Eduardo Habkost wrote: > > svm_vcpu_reset() was not properly resetting the contents of the guest-visible > > cr0 register, causing the following issue: > > https://bugzilla.redhat.com/show_bug.cgi?id=525699 > > > > Without resetting cr0 properly, the vcpu was running the SIPI bootstrap routine > > with paging enabled, making the vcpu get a pagefault exception while trying to > > run it. > > > > Instead of setting vmcb->save.cr0 directly, the new code just resets > > kvm->arch.cr0 and calls kvm_set_cr0(). The bits that were set/cleared on > > vmcb->save.cr0 (PG, WP, !CD, !NW) will be set properly by svm_set_cr0(). > > > > kvm_set_cr0() is used instead of calling svm_set_cr0() directly to make sure > > kvm_mmu_reset_context() is called to reset the mmu to nonpaging mode. > > > > Signed-off-by: Eduardo Habkost <ehabkost@xxxxxxxxxx> > > > > Should this go into -stable? I think so. The patch is from October, was -stable branched before that? -- Eduardo -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
