| Message ID | 20211030183200.51295-3-rongwei.wang@linux.alibaba.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | fix bug when calling kexec_load() | expand |
diff --git a/arch/arm64/kernel/machine_kexec.c b/arch/arm64/kernel/machine_kexec.c index 1038494135c8..7f2530bcd42e 100644 --- a/arch/arm64/kernel/machine_kexec.c +++ b/arch/arm64/kernel/machine_kexec.c @@ -104,13 +104,15 @@ static void *kexec_page_alloc(void *arg) { struct kimage *kimage = (struct kimage *)arg; struct page *page = kimage_alloc_control_pages(kimage, 0); + void *vaddr = NULL; if (!page) return NULL; - memset(page_address(page), 0, PAGE_SIZE); + vaddr = page_address(page); + memset(vaddr, 0, PAGE_SIZE); - return page_address(page); + return vaddr; } int machine_kexec_post_load(struct kimage *kimage)
In kexec_page_alloc(), page_address() is called twice. This patch add a new variable to help to reduce calls to page_address(). Signed-off-by: Rongwei Wang <rongwei.wang@linux.alibaba.com> --- arch/arm64/kernel/machine_kexec.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)