diff options
Diffstat (limited to 'arch/arm64/kernel/machine_kexec.c')
| -rw-r--r-- | arch/arm64/kernel/machine_kexec.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index f76ea92dff91..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); - flush_icache_range((uintptr_t)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); /* Flush the kimage list and its buffers. */ kexec_list_flush(kimage); @@ -207,8 +214,7 @@ void machine_kexec(struct kimage *kimage) * relocation is complete. */ - cpu_soft_restart(kimage != kexec_crash_image, - reboot_code_buffer_phys, kimage->head, kimage->start, 0); + cpu_soft_restart(reboot_code_buffer_phys, kimage->head, kimage->start, 0); BUG(); /* Should never get here. */ } @@ -361,4 +367,5 @@ void arch_crash_save_vmcoreinfo(void) kimage_voffset); vmcoreinfo_append_str("NUMBER(PHYS_OFFSET)=0x%llx\n", PHYS_OFFSET); + vmcoreinfo_append_str("KERNELOFFSET=%lx\n", kaslr_offset()); } |