Laurent Vivier <lviv...@redhat.com> writes: > On 12/12/2017 13:02, Cédric Le Goater wrote: >> When restoring a pending interrupt, we are setting the Q bit to force >> a retrigger in xive_finish_unmask(). But we also need to force an EOI >> in this case to reach the same initial state : P=1, Q=0. >> >> This can be done by not setting 'old_p' for pending interrupts which >> will inform xive_finish_unmask() that an EOI needs to be sent. >> >> Suggested-by: Benjamin Herrenschmidt <b...@kernel.crashing.org> >> Signed-off-by: Cédric Le Goater <c...@kaod.org> >> --- >> >> Tested with a guest running iozone. >> >> arch/powerpc/kvm/book3s_xive.c | 4 ++-- >> 1 file changed, 2 insertions(+), 2 deletions(-) > > We really need this patch to fix VM migration on POWER9. > When will it be merged?
Paul is away, so I'll merge it via the powerpc tree. I'll mark it: Fixes: 5af50993850a ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller") Cc: sta...@vger.kernel.org # v4.12+ cheers