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| author | Cédric Le Goater <clg@kaod.org> | 2017-12-12 15:02:04 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-12-22 07:34:02 +0300 |
| commit | dc1c4165d189350cb51bdd3057deb6ecd164beda (patch) | |
| tree | 36a209982dc96e1dafe984b6ea85d021eea46e76 /lib/timerqueue.c | |
| parent | 182dc9c7f217146d69d9c0b75c150c0314b9b170 (diff) | |
| download | linux-dc1c4165d189350cb51bdd3057deb6ecd164beda.tar.xz | |
KVM: PPC: Book3S: fix XIVE migration of pending interrupts
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.
Fixes: 5af50993850a ("KVM: PPC: Book3S HV: Native usage of the XIVE interrupt controller")
Cc: stable@vger.kernel.org # v4.12+
Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'lib/timerqueue.c')
0 files changed, 0 insertions, 0 deletions