From: AKASHI Takahiro <takahiro.akashi@xxxxxxxxxx>
We should try best in case of kdump.
So even if not all secondary cpus have shut down, we do kdump anyway.
---
arch/arm64/kernel/machine_kexec.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c
index f315ee4..157c29b 100644
--- a/arch/arm64/kernel/machine_kexec.c
+++ b/arch/arm64/kernel/machine_kexec.c
@@ -139,7 +139,12 @@ void machine_kexec(struct kimage *image)
phys_addr_t reboot_code_buffer_phys;
void *reboot_code_buffer;
- BUG_ON(num_online_cpus() > 1);
+ if (num_online_cpus() > 1) {
+ if (in_crash_kexec)
+ pr_warn("*\n* kdump might fail because %d cpus are still online\n*\n", num_online_cpus());
+ else
+ BUG();
+ }
kimage_head = image->head;
--
2.5.0
