The patch titled
Subject: vmcore: allocate per-cpu crash_notes objects on page-size boundary
has been removed from the -mm tree. Its filename was
vmcore-allocate-per-cpu-crash_notes-objects-on-page-size-boundary.patch
This patch was dropped because it was nacked
------------------------------------------------------
From: HATAYAMA Daisuke <d.hatayama@xxxxxxxxxxxxxx>
Subject: vmcore: allocate per-cpu crash_notes objects on page-size boundary
To satisfy mmap()'s page-size boundary requirement, allocate per-cpu
crash_notes objects on page-size boundary.
/proc/vmcore on the 2nd kernel checks if each note objects is allocated on
page-size boundary. If there's some object not satisfying the page-size
boundary requirement, /proc/vmcore doesn't provide mmap() interface.
Signed-off-by: HATAYAMA Daisuke <d.hatayama@xxxxxxxxxxxxxx>
Cc: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Cc: Vivek Goyal <vgoyal@xxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/kexec.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN kernel/kexec.c~vmcore-allocate-per-cpu-crash_notes-objects-on-page-size-boundary kernel/kexec.c
--- a/kernel/kexec.c~vmcore-allocate-per-cpu-crash_notes-objects-on-page-size-boundary
+++ a/kernel/kexec.c
@@ -1223,7 +1223,8 @@ void crash_save_cpu(struct pt_regs *regs
static int __init crash_notes_memory_init(void)
{
/* Allocate memory for saving cpu registers. */
- crash_notes = alloc_percpu(note_buf_t);
+ crash_notes = __alloc_percpu(roundup(sizeof(note_buf_t), PAGE_SIZE),
+ PAGE_SIZE);
if (!crash_notes) {
printk("Kexec: Memory allocation for saving cpu register"
" states failed\n");
_
Patches currently in -mm which might be from d.hatayama@xxxxxxxxxxxxxx are
kexec-allocate-vmcoreinfo-note-buffer-on-page-size-boundary.patch
kexec-elf-introduce-nt_vmcore_debuginfo-note-type.patch
elf-introduce-nt_vmcore_pad-type.patch
kexec-fill-note-buffers-by-nt_vmcore_pad-notes-in-page-size-boundary.patch
vmcore-check-nt_vmcore_pad-as-a-mark-indicating-the-end-of-elf-note-buffer.patch
vmcore-check-if-vmcore-objects-satify-mmaps-page-size-boundary-requirement.patch
vmcore-round-up-offset-of-vmcore-object-in-page-size-boundary.patch
vmcore-count-holes-generated-by-round-up-operation-for-vmcore-size.patch
vmcore-introduce-mmap_vmcore.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
