>From b023ba02ea5c0983ffb33ff486b3b4f8b5d972e6 Mon Sep 17 00:00:00 2001 From: Wu Zhangjin <wuzhangjin@xxxxxxxxx> Date: Sat, 16 May 2009 04:32:13 +0800 Subject: [PATCH 20/30] loongson: Flush RAS and BTB for CPU predictively execution --- arch/mips/include/asm/stackframe.h | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+), 0 deletions(-) diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h index db0fa7b..204286e 100644 --- a/arch/mips/include/asm/stackframe.h +++ b/arch/mips/include/asm/stackframe.h @@ -117,6 +117,24 @@ .endm #else .macro get_saved_sp /* Uniprocessor variation */ +#ifdef CONFIG_CPU_LOONGSON2 + move k0,ra + jal 2008f + nop + 2008: + jal 2008f + nop + 2008: + jal 2008f + nop + 2008: + jal 2008f + nop + 2008: + move ra,k0 + li k0,3 + mtc0 k0,$22 +#endif #if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32) lui k1, %hi(kernelsp) #else -- 1.6.2.1
