On 17/11/2017 20:37, Dr. David Alan Gilbert wrote: > * Paolo Bonzini (pbonzini@xxxxxxxxxx) wrote: >> On 17/11/2017 12:52, Dr. David Alan Gilbert (git) wrote: >>> From: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx> >>> >>> In x2apic mode the LDR should be fixed, however >>> it gets overwritten when the lapic state is loaded >>> after a migration. Change the fixup to keep LDR constant. >>> >>> Dave >>> >>> Dr. David Alan Gilbert (2): >>> KVM: lapic: Split out x2apic ldr calculation >>> KVM: lapic: Fixup LDR on load in x2apic >>> >>> arch/x86/kvm/lapic.c | 12 +++++++++++- >>> 1 file changed, 11 insertions(+), 1 deletion(-) >>> >> >> Queued, thanks. > > Hang on, there's something not right here. > I've got a Linux guest migration that's unstable with this > patch. > (Tasks blocked for >22seconds, generally memory related, so I'm > wondering if it's IPIs not happening) Too late, but I'll take a look as well on Monday, in case I can spot something obvious. Paolo
