public-mirrors/linux
1
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-08-05 16:54:27 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions
linux/arch/powerpc/sysdev/xive
History
Cédric Le Goater 1ca3dec2b2 powerpc/xive: Prevent page fault issues in the machine crash handler 
When the machine crash handler is invoked, all interrupts are masked
but interrupts which have not been started yet do not have an ESB page
mapped in the Linux address space. This crashes the 'crash kexec'
sequence on sPAPR guests.

To fix, force the mapping of the ESB page when an interrupt is being
mapped in the Linux IRQ number space. This is done by setting the
initial state of the interrupt to OFF which is not necessarily the
case on PowerNV.

Fixes: 243e25112d ("powerpc/xive: Native exploitation of the XIVE interrupt controller")
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191031063100.3864-1-clg@kaod.org
2019-11-13 16:58:10 +11:00
..
common.c powerpc/xive: Prevent page fault issues in the machine crash handler 2019-11-13 16:58:10 +11:00
Kconfig powerpc: remove redundant 'default n' from Kconfig-s 2018-10-13 22:21:25 +11:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
native.c powerpc updates for 5.4 2019-09-20 11:48:06 -07:00
spapr.c powerpc/xive: Fix dump of XIVE interrupt under pseries 2019-08-19 13:20:24 +10:00
xive-internal.h powerpc/xive: Fix dump of XIVE interrupt under pseries 2019-08-19 13:20:24 +10:00