lkml.org 
[lkml]   [2022]   [May]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH 2/3] mm: introduce clear_highpage_tagged
On Tue, 31 May 2022 17:43:49 +0200 andrey.konovalov@linux.dev wrote:

> From: Andrey Konovalov <andreyknvl@google.com>
>
> Add a clear_highpage_tagged() helper that does clear_highpage() on a
> page potentially tagged by KASAN.

clear_highpage_kasan_tagged() would be a better name, no?

--- a/include/linux/highmem.h~mm-introduce-clear_highpage_tagged-fix
+++ a/include/linux/highmem.h
@@ -243,7 +243,7 @@ static inline void clear_highpage(struct
kunmap_local(kaddr);
}

-static inline void clear_highpage_tagged(struct page *page)
+static inline void clear_highpage_kasan_tagged(struct page *page)
{
u8 tag;

--- a/mm/page_alloc.c~mm-introduce-clear_highpage_tagged-fix
+++ a/mm/page_alloc.c
@@ -1311,7 +1311,7 @@ static void kernel_init_pages(struct pag
/* s390's use of memset() could override KASAN redzones. */
kasan_disable_current();
for (i = 0; i < numpages; i++)
- clear_highpage_tagged(page + i);
+ clear_highpage_kasan_tagged(page + i);
kasan_enable_current();
}

_
\
 
 \ /
  Last update: 2022-05-31 19:52    [W:0.128 / U:0.176 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site