Re: KVM: PPC: Book3S: fix XIVE migration of pending interrupts

On Tue, 2017-12-12 at 12:02:04 UTC, =?utf-8?q?C=C3=A9dric_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 <benh@kernel.crashing.org>
Signed-off-by: C��dric Le Goater <clg@kaod.org>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/dc1c4165d189350cb51bdd3057deb6

cheers