AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/arch/mips
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Hidehiro Kawai 54c721b857 mips/panic: replace smp_send_stop() with kdump friendly version in panic path 
Daniel Walker reported problems which happens when
crash_kexec_post_notifiers kernel option is enabled
(https://lkml.org/lkml/2015/6/24/44).

In that case, smp_send_stop() is called before entering kdump routines
which assume other CPUs are still online.  As the result, kdump
routines fail to save other CPUs' registers.  Additionally for MIPS
OCTEON, it misses to stop the watchdog timer.

To fix this problem, call a new kdump friendly function,
crash_smp_send_stop(), instead of the smp_send_stop() when
crash_kexec_post_notifiers is enabled.  crash_smp_send_stop() is a
weak function, and it just call smp_send_stop().  Architecture
codes should override it so that kdump can work appropriately.
This patch provides MIPS version.

Fixes: f06e5153f4 (kernel/panic.c: add "crash_kexec_post_notifiers" option)
Link: http://lkml.kernel.org/r/20160810080950.11028.28000.stgit@sysi4-13.yrl.intra.hitachi.co.jp
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Reported-by: Daniel Walker <dwalker@fifo99.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Daniel Walker <dwalker@fifo99.com>
Cc: Xunlei Pang <xpang@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Daney <david.daney@cavium.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: "Steven J. Hill" <steven.hill@cavium.com>
Cc: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-11 15:06:32 -07:00
..
alchemy
ar7
ath25
ath79 MIPS: ath79: Fix test for error return of clk_register_fixed_factor(). 2016-09-13 14:13:26 +02:00
bcm47xx
bcm63xx
bmips MIPS: store the appended dtb address in a variable 2016-08-02 14:00:16 +02:00
boot MIPS: tools: Fix relocs tool compiler warnings 2016-08-03 09:00:55 +02:00
cavium-octeon mips/panic: replace smp_send_stop() with kdump friendly version in panic path 2016-10-11 15:06:32 -07:00
cobalt MIPS: Cobalt: Fix typo 2016-08-03 08:16:30 +02:00
configs Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
dec MIPS: DEC: Avoid la pseudo-instruction in delay slots 2016-09-29 18:59:49 +02:00
emma
fw
include mips/panic: replace smp_send_stop() with kdump friendly version in panic path 2016-10-11 15:06:32 -07:00
jazz
jz4740 tree-wide: replace config_enabled() with IS_ENABLED() 2016-08-04 08:50:07 -04:00
kernel mips/panic: replace smp_send_stop() with kdump friendly version in panic path 2016-10-11 15:06:32 -07:00
kvm MIPS KVM updates for v4.9 2016-09-29 16:26:52 +02:00
lantiq Merge branch '4.7-fixes' into mips-for-linux-next 2016-08-03 12:55:49 +02:00
lasat
lib
loongson32
loongson64 mips/loongson/smp: Convert to hotplug state machine 2016-09-19 21:44:32 +02:00
math-emu MIPS: Fix delay slot emulation count in debugfs 2016-09-25 01:59:16 +02:00
mm MIPS: Fix detection of unsupported highmem with cache aliases 2016-09-29 18:59:49 +02:00
mti-malta MIPS: Malta: Fix IOCU disable switch read for MIPS64 2016-09-29 18:59:49 +02:00
mti-sead3
net Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
netlogic dma-mapping: use unsigned long for dma_attrs 2016-08-04 08:50:07 -04:00
oprofile
paravirt
pci
pic32 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
pistachio Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
pmcs-msp71xx
pnx833x
power
ralink Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2016-08-06 09:13:11 -04:00
rb532
sgi-ip22
sgi-ip27
sgi-ip32
sibyte
sni
txx9 treewide: replace obsolete _refok by __ref 2016-08-02 17:31:41 -04:00
vdso
vr41xx
xilfpga
Kbuild
Kbuild.platforms
Kconfig atomic64: no need for CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE 2016-10-07 18:46:30 -07:00
Kconfig.debug MIPS: Remove compact branch policy Kconfig entries 2016-09-13 14:14:50 +02:00
Makefile MIPS: Remove compact branch policy Kconfig entries 2016-09-13 14:14:50 +02:00