diff options
Diffstat (limited to 'arch/powerpc/kexec/file_load_64.c')
| -rw-r--r-- | arch/powerpc/kexec/file_load_64.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/kexec/file_load_64.c b/arch/powerpc/kexec/file_load_64.c index e7ef8b2a2554..5f6d50e4c3d4 100644 --- a/arch/powerpc/kexec/file_load_64.c +++ b/arch/powerpc/kexec/file_load_64.c @@ -450,6 +450,11 @@ static int load_elfcorehdr_segment(struct kimage *image, struct kexec_buf *kbuf) kbuf->buffer = headers; kbuf->mem = KEXEC_BUF_MEM_UNKNOWN; kbuf->bufsz = headers_sz; + + /* + * Account for extra space required to accommodate additional memory + * ranges in elfcorehdr due to memory hotplug events. + */ kbuf->memsz = headers_sz + kdump_extra_elfcorehdr_size(cmem); kbuf->top_down = false; @@ -460,7 +465,14 @@ static int load_elfcorehdr_segment(struct kimage *image, struct kexec_buf *kbuf) } image->elf_load_addr = kbuf->mem; - image->elf_headers_sz = headers_sz; + + /* + * If CONFIG_CRASH_HOTPLUG is enabled, the elfcorehdr kexec segment + * memsz can be larger than bufsz. Always initialize elf_headers_sz + * with memsz. This ensures the correct size is reserved for elfcorehdr + * memory in the FDT prepared for kdump. + */ + image->elf_headers_sz = kbuf->memsz; image->elf_headers = headers; out: kfree(cmem); |