OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Blackfin: access_ok: permit L1 stack 

When apps run with their stack in L1, some system calls might be made
where a buffer is in the stack as an argument.  So make sure the core
Blackfin access code does not reject this memory location.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Barry Song 2010-06-29 08:43:38 +00:00 committed by Mike Frysinger
parent 027285e86f
commit 41c3e3346a
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
arch/blackfin/kernel/process.c
View File

@ -493,6 +493,11 @@ int _access_ok(unsigned long addr, unsigned long size)
return 1;
#endif
#ifndef CONFIG_EXCEPTION_L1_SCRATCH
if (in_mem_const(addr, size, (unsigned long)l1_stack_base, l1_stack_len))
return 1;
#endif
aret = in_async(addr, size);
if (aret < 2)
return aret;