From 7934cea7f0b93fcfdb3b175df94f539e4af86c9b Mon Sep 17 00:00:00 2001
From: Christophe Leroy <christophe.leroy@c-s.fr>
Date: Fri, 26 Apr 2019 16:23:30 +0000
Subject: [PATCH] powerpc/32: use memset() instead of memset_io() to zero BSS
Since commit 400c47d81ca38 ("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>
---
arch/powerpc/kernel/early_32.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/early_32.c b/arch/powerpc/kernel/early_32.c
index cf3cdd81dc475..3482118ffe763 100644
--- a/arch/powerpc/kernel/early_32.c
+++ b/arch/powerpc/kernel/early_32.c
@@ -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
--
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