File kdump-powerpc-no-reload-on-CPU-hot-remove.patch of Package kdump.21350

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File kdump-powerpc-no-reload-on-CPU-hot-remove.patch of Package kdump.21350

From: Petr Tesarik <ptesarik@suse.com>
Date: Fri, 6 Dec 2019 09:54:57 +0100
Subject: powerpc: Do not reload on CPU hot removal
References: bsc#1133407, LTC#176111
Upstream: merged
Git-commit: d1c4f630f0da0bf43928e3c975f02e832b2df50f

Skipping reload after a CPU goes offline does not have any adverse
impact, as /sys/devices/system/cpu/cpuX nodes are present for all
"possible" CPUs on PPC64.

The udev rule for CPU online operation is still needed. If reload
is skipped and the system crashes on a hot-added CPU, the kdump
kernel fails to get the 'boot_cpuid' after a hot plug and
eventually fails (see early_init_dt_scan_cpus() in
arch/powerpc/kernel/prom.c file).

Signed-off-by: Petr Tesarik <ptesarik@suse.com>

---
 70-kdump.rules.in |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/70-kdump.rules.in
+++ b/70-kdump.rules.in
@@ -13,7 +13,7 @@
 
 SUBSYSTEM=="memory", ACTION=="add|remove", GOTO="kdump_try_restart"
 @if @ARCH@ ppc ppc64 ppc64le
-SUBSYSTEM=="cpu", ACTION=="online|offline", GOTO="kdump_try_restart"
+SUBSYSTEM=="cpu", ACTION=="online", GOTO="kdump_try_restart"
 @endif
 
 GOTO="kdump_end"

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File kdump-powerpc-no-reload-on-CPU-hot-remove.patch of Package kdump.21350

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