ARM: xscale: fix multi-cpu compilation
authorArnd Bergmann <arnd@arndb.de>
Fri, 9 Aug 2019 16:33:19 +0000 (18:33 +0200)
committerArnd Bergmann <arnd@arndb.de>
Wed, 14 Aug 2019 13:36:22 +0000 (15:36 +0200)
commitc7b68049943079550d4e6af0f10aa3aabd64131a
tree4d61d56f058775c3c6b55a7f65bb418e7b545547
parentaad7ad2a01e774f5cd0dde8f0bc6e253ae3f0d35
ARM: xscale: fix multi-cpu compilation

Building a combined ARMv4+XScale kernel produces these
and other build failures:

/tmp/copypage-xscale-3aa821.s: Assembler messages:
/tmp/copypage-xscale-3aa821.s:167: Error: selected processor does not support `pld [r7,#0]' in ARM mode
/tmp/copypage-xscale-3aa821.s:168: Error: selected processor does not support `pld [r7,#32]' in ARM mode
/tmp/copypage-xscale-3aa821.s:169: Error: selected processor does not support `pld [r1,#0]' in ARM mode
/tmp/copypage-xscale-3aa821.s:170: Error: selected processor does not support `pld [r1,#32]' in ARM mode
/tmp/copypage-xscale-3aa821.s:171: Error: selected processor does not support `pld [r7,#64]' in ARM mode
/tmp/copypage-xscale-3aa821.s:176: Error: selected processor does not support `ldrd r4,r5,[r7],#8' in ARM mode
/tmp/copypage-xscale-3aa821.s:180: Error: selected processor does not support `strd r4,r5,[r1],#8' in ARM mode

Add an explict .arch armv5 in the inline assembly to allow the ARMv5
specific instructions regardless of the compiler -march= target.

Link: https://lore.kernel.org/r/20190809163334.489360-5-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
arch/arm/mm/copypage-xscale.c