www.infradead.org Git - users/jedix/linux-maple.git/commit

author	Christophe Leroy <christophe.leroy@csgroup.eu>
	Tue, 24 Aug 2021 07:56:35 +0000 (07:56 +0000)
committer	Michael Ellerman <mpe@ellerman.id.au>
	Wed, 25 Aug 2021 03:35:47 +0000 (13:35 +1000)
commit	33e1402435cb9f3021439a15935ea2dc69ec1844
tree	aa036b96b414c8702dc8ea8d835d5bdbbfec561f	tree
parent	f5007dbf4da729baa850b33a64dc3cc53757bdf8	commit \| diff

powerpc: Avoid link stack corruption in misc asm functions

bl;mflr is used at several places to get code position.

Use bcl 20,31,+4 instead of bl in order to preserve link stack.

See commit c974809a26a1 ("powerpc/vdso: Avoid link stack corruption
in __get_datapage()") for details.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/c6eabb4fb6c156f75d56dcbcc6f243e5ac0fba42.1629791763.git.christophe.leroy@csgroup.eu

arch/powerpc/kernel/misc.S		diff \| blob \| history
arch/powerpc/kernel/misc_32.S		diff \| blob \| history
arch/powerpc/kernel/misc_64.S		diff \| blob \| history
arch/powerpc/kernel/reloc_32.S		diff \| blob \| history
arch/powerpc/kexec/relocate_32.S		diff \| blob \| history