Re: [PATCH v2 3/4] apic: Use 32bit APIC ID for migration instance ID

2019-10-16 Thread Juan Quintela
Peter Xu wrote: > Migration is silently broken now with x2apic config like this: > > -smp 200,maxcpus=288,sockets=2,cores=72,threads=2 \ > -device intel-iommu,intremap=on,eim=on > > After migration, the guest kernel could hang at anything, due to > x2apic bit not migrated correctly in IA

Re: [PATCH v2 3/4] apic: Use 32bit APIC ID for migration instance ID

2019-10-15 Thread Eduardo Habkost
On Wed, Oct 16, 2019 at 10:29:32AM +0800, Peter Xu wrote: > Migration is silently broken now with x2apic config like this: > > -smp 200,maxcpus=288,sockets=2,cores=72,threads=2 \ > -device intel-iommu,intremap=on,eim=on > > After migration, the guest kernel could hang at anything, due t

[PATCH v2 3/4] apic: Use 32bit APIC ID for migration instance ID

2019-10-15 Thread Peter Xu
Migration is silently broken now with x2apic config like this: -smp 200,maxcpus=288,sockets=2,cores=72,threads=2 \ -device intel-iommu,intremap=on,eim=on After migration, the guest kernel could hang at anything, due to x2apic bit not migrated correctly in IA32_APIC_BASE on some vcpus, s