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05 April 2024, 19:05:47 UTC
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 
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>
1 parent 182dc9c
Raw File
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
Tip revision: dc1c416
Kconfig 
# SPDX-License-Identifier: GPL-2.0
#
# For a description of the syntax of this configuration file,
# see Documentation/kbuild/kconfig-language.txt.
#
mainmenu "Linux/$ARCH $KERNELVERSION Kernel Configuration"

config SRCARCH
	string
	option env="SRCARCH"

source "arch/$SRCARCH/Kconfig"
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