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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-26 16:23:32 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 01:20:26 +1000 |
| commit | b4abe38fd698ace6942edeeb79a5b8a60a7af4fa (patch) | |
| tree | 144790e1e4be1cbcffdc1425eda2606f0a3c3259 /arch/powerpc/mm | |
| parent | a67beca077ef79e971443aa6af6b14d4b3fb3bd6 (diff) | |
| download | linux-b4abe38fd698ace6942edeeb79a5b8a60a7af4fa.tar.bz2 | |
powerpc/32: prepare shadow area for KASAN
This patch prepares a shadow area for KASAN.
The shadow area will be at the top of the kernel virtual
memory space above the fixmap area and will occupy one
eighth of the total kernel virtual memory space.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/mm/ptdump/ptdump.c | 8 |
2 files changed, 12 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 105c58f8900a..cd525d709072 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -310,6 +310,10 @@ void __init mem_init(void) mem_init_print_info(NULL); #ifdef CONFIG_PPC32 pr_info("Kernel virtual memory layout:\n"); +#ifdef CONFIG_KASAN + pr_info(" * 0x%08lx..0x%08lx : kasan shadow mem\n", + KASAN_SHADOW_START, KASAN_SHADOW_END); +#endif pr_info(" * 0x%08lx..0x%08lx : fixmap\n", FIXADDR_START, FIXADDR_TOP); #ifdef CONFIG_HIGHMEM pr_info(" * 0x%08lx..0x%08lx : highmem PTEs\n", diff --git a/arch/powerpc/mm/ptdump/ptdump.c b/arch/powerpc/mm/ptdump/ptdump.c index 63fc56feea15..48135ba6fa74 100644 --- a/arch/powerpc/mm/ptdump/ptdump.c +++ b/arch/powerpc/mm/ptdump/ptdump.c @@ -101,6 +101,10 @@ static struct addr_marker address_markers[] = { { 0, "Fixmap start" }, { 0, "Fixmap end" }, #endif +#ifdef CONFIG_KASAN + { 0, "kasan shadow mem start" }, + { 0, "kasan shadow mem end" }, +#endif { -1, NULL }, }; @@ -323,6 +327,10 @@ static void populate_markers(void) #endif address_markers[i++].start_address = FIXADDR_START; address_markers[i++].start_address = FIXADDR_TOP; +#ifdef CONFIG_KASAN + address_markers[i++].start_address = KASAN_SHADOW_START; + address_markers[i++].start_address = KASAN_SHADOW_END; +#endif #endif /* CONFIG_PPC64 */ } |