Commit 7934cea7 authored Apr 26, 2019 by Christophe Leroy Committed by Michael Ellerman May 03, 2019

powerpc/32: use memset() instead of memset_io() to zero BSS



Since commit 400c47d8 ("powerpc32: memset: only use dcbz once cache is
enabled"), memset() can be used before activation of the cache,
so no need to use memset_io() for zeroing the BSS.

Acked-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent adcf5918

arch/powerpc/kernel/early_32.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -21,8 +21,8 @@ notrace unsigned long __init early_init(unsigned long dt_ptr)
		{
		unsigned long offset = reloc_offset();

		/* First zero the BSS -- use memset_io, some platforms don't have caches on yet */
		memset_io((void __iomem *)PTRRELOC(&__bss_start), 0, __bss_stop - __bss_start);
		/* First zero the BSS */
		memset(PTRRELOC(&__bss_start), 0, __bss_stop - __bss_start);

		/*
		* Identify the CPU type and fix up code sections