https://github.com/torvalds/linux
Revision dc1c4165d189350cb51bdd3057deb6ecd164beda authored by Cédric Le Goater on 12 December 2017, 12:02:04 UTC, committed by Michael Ellerman on 22 December 2017, 04:34:02 UTC
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>
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History 
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Tip revision: dc1c4165d189350cb51bdd3057deb6ecd164beda authored by Cédric Le Goater on 12 December 2017, 12:02:04 UTC
KVM: PPC: Book3S: fix XIVE migration of pending interrupts
KVM: PPC: Book3S: fix XIVE migration of pending interrupts
Tip revision: dc1c416
| File | Mode | Size |
|---|---|---|
| Documentation | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | -rw-r--r-- | 59 bytes |
| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
| .gitattributes | -rw-r--r-- | 30 bytes |
| .gitignore | -rw-r--r-- | 1.4 KB |
| .mailmap | -rw-r--r-- | 8.8 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 96.2 KB |
| Kbuild | -rw-r--r-- | 2.2 KB |
| Kconfig | -rw-r--r-- | 287 bytes |
| MAINTAINERS | -rw-r--r-- | 425.8 KB |
| Makefile | -rw-r--r-- | 58.3 KB |
| README | -rw-r--r-- | 722 bytes |
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