From: Eddie James Date: Tue, 11 Feb 2025 16:20:54 +0000 (-0600) Subject: powerpc/crash: Fix non-smp kexec preparation X-Git-Tag: v6.16-rc1~200^2~29 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=882b25af265de8e05c66f72b9a29f6047102958f;p=thirdparty%2Fkernel%2Flinux.git powerpc/crash: Fix non-smp kexec preparation 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: c7255058b543 ("powerpc/crash: save cpu register data in crash_smp_send_stop()") Signed-off-by: Eddie James Reviewed-by: Hari Bathini Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250211162054.857762-1-eajames@linux.ibm.com --- diff --git a/arch/powerpc/kexec/crash.c b/arch/powerpc/kexec/crash.c index 9ac3266e49652..a325c1c02f96d 100644 --- a/arch/powerpc/kexec/crash.c +++ b/arch/powerpc/kexec/crash.c @@ -359,7 +359,10 @@ 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);