diff options
| -rw-r--r-- | arch/arm64/kernel/machine_kexec.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index 4c0eb30bfede..f6a5c6bc1434 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -184,8 +184,15 @@ void machine_kexec(struct kimage *kimage) /* Flush the reboot_code_buffer in preparation for its execution. */ __flush_dcache_area(reboot_code_buffer, arm64_relocate_new_kernel_size); + + /* + * Although we've killed off the secondary CPUs, we don't update + * the online mask if we're handling a crash kernel and consequently + * need to avoid flush_icache_range(), which will attempt to IPI + * the offline CPUs. Therefore, we must use the __* variant here. + */ __flush_icache_range((uintptr_t)reboot_code_buffer, - arm64_relocate_new_kernel_size); + arm64_relocate_new_kernel_size); /* Flush the kimage list and its buffers. */ kexec_list_flush(kimage); |