On 17/04/2015 10:55, Greg KH wrote: > On Thu, Apr 16, 2015 at 11:58:05AM -0700, Ben Serebrin wrote: >> > The host's decision to enable machine check exceptions should remain >> > in force during non-root mode. KVM was writing 0 to cr4 on VCPU reset >> > and passed a slightly-modified 0 to the vmcs.guest_cr4 value. >> > >> > Tested: Built. >> > On earlier version, tested by injecting machine check >> > while a guest is spinning. >> > >> > Before the change, if guest CR4.MCE==0, then the machine check is >> > escalated to Catastrophic Error (CATERR) and the machine dies. >> > If guest CR4.MCE==1, then the machine check causes VMEXIT and is >> > handled normally by host Linux. After the change, injecting a machine >> > check causes normal Linux machine check handling. >> > >> > Signed-off-by: Ben Serebrin <serebrin@xxxxxxxxxx> >> > --- >> > arch/x86/kvm/vmx.c | 12 ++++++++++-- >> > 1 file changed, 10 insertions(+), 2 deletions(-) > <formletter> > > This is not the correct way to submit patches for inclusion in the > stable kernel tree. Please read Documentation/stable_kernel_rules.txt > for how to do this properly. I'll fix it up when applying to the KVM tree. Paolo -- 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
