iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

powerpc/mem: Blacklist flush_dcache_icache_phys() for kprobe

Browse Source 
kprobe does not handle events happening in real mode, all
functions running with MMU disabled have to be blacklisted.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/eaab3bff961c3bfe149f1d0bd3593291ef939dcc.1585670437.git.christophe.leroy@c-s.fr
This commit is contained in:
Christophe Leroy 2020-03-31 16:03:40 +00:00 committed by Michael Ellerman
parent 32a820670f
commit a64371b5d4
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/powerpc/mm/mem.c
View File

@ -32,6 +32,7 @@
#include <linux/vmalloc.h>
#include <linux/memremap.h>
#include <linux/dma-direct.h>
#include <linux/kprobes.h>
#include <asm/pgalloc.h>
#include <asm/prom.h>
@ -468,6 +469,7 @@ static void flush_dcache_icache_phys(unsigned long physaddr)
: "r" (nb), "r" (msr), "i" (bytes), "r" (msr0)
: "ctr", "memory");
}
NOKPROBE_SYMBOL(flush_dcache_icache_phys)
#endif // !defined(CONFIG_PPC_8xx) && !defined(CONFIG_PPC64)
/*