]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
kasan, powerpc: don't rename memintrinsics if compiler adds prefixes
authorMarco Elver <elver@google.com>
Mon, 27 Feb 2023 09:47:27 +0000 (10:47 +0100)
committerAndrew Morton <akpm@linux-foundation.org>
Fri, 24 Mar 2023 00:18:33 +0000 (17:18 -0700)
commit90db9dbedd26ce029f3a0f8d2cbd3a142f452408
treeb1b2efafa0a9b6462742b390415dac854ef03953
parent6db504ce55bdbc575723938fc480713c9183f6a2
kasan, powerpc: don't rename memintrinsics if compiler adds prefixes

With appropriate compiler support [1], KASAN builds use __asan prefixed
meminstrinsics, and KASAN no longer overrides memcpy/memset/memmove.

If compiler support is detected (CC_HAS_KASAN_MEMINTRINSIC_PREFIX), define
memintrinsics normally (do not prefix '__').

On powerpc, KASAN is the only user of __mem functions, which are used to
define instrumented memintrinsics.  Alias the normal versions for KASAN to
use in its implementation.

Link: https://lore.kernel.org/all/20230224085942.1791837-1-elver@google.com/
Link: https://lore.kernel.org/oe-kbuild-all/202302271348.U5lvmo0S-lkp@intel.com/
Link: https://lkml.kernel.org/r/20230227094726.3833247-1-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc]
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
arch/powerpc/include/asm/kasan.h
arch/powerpc/include/asm/string.h
arch/powerpc/kernel/prom_init_check.sh