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powerpc/crash: Fix non-smp kexec preparation

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[ Upstream commit 882b25af265de8e05c66f72b9a29f6047102958f ]

In non-smp configurations, crash_kexec_prepare is never called in
the crash shutdown path. One result of this is that the crashing_cpu
variable is never set, preventing crash_save_cpu from storing the
NT_PRSTATUS elf note in the core dump.

Fixes: c7255058b5 ("powerpc/crash: save cpu register data in crash_smp_send_stop()")
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20250211162054.857762-1-eajames@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Eddie James
2025-02-11 10:20:54 -06:00
committed by Greg Kroah-Hartman
parent fdc39b3ad8
commit 4fb2231089
1 changed files with 4 additions and 1 deletions
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5
arch/powerpc/kexec/crash.c
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@@ -356,7 +356,10 @@ void default_machine_crash_shutdown(struct pt_regs *regs)
if (TRAP(regs) == INTERRUPT_SYSTEM_RESET)
is_via_system_reset = 1;
crash_smp_send_stop();
if (IS_ENABLED(CONFIG_SMP))
crash_smp_send_stop();
else
crash_kexec_prepare();
crash_save_cpu(regs, crashing_cpu);