KVM: x86: flush pending lapic jump label updates on module unload

Browse source

commit cef84c302f upstream.

KVM's lapic emulation uses static_key_deferred (apic_{hw,sw}_disabled).
These are implemented with delayed_work structs which can still be
pending when the KVM module is unloaded. We've seen this cause kernel
panics when the kvm_intel module is quickly reloaded.

Use the new static_key_deferred_flush() API to flush pending updates on
module unload.

Signed-off-by: David Matlack <dmatlack@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

...

This commit is contained in:

David Matlack 2016-12-16 14:30:36 -08:00 • committed by Ben Hutchings

parent d08dd068ad

commit e150dfb5e5

3 changed files with 8 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

arch/x86/kvm/lapic.c

View file

1

arch/x86/kvm/lapic.h

View file

1

arch/x86/kvm/x86.c

View file