From 0197cd2e350a7151080e7335577e956f1f84a8cb Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Thu, 18 Oct 2007 16:53:19 -0500 Subject: [POWERPC] Add -mno-spe for ARCH=powerpc builds Newer GCC's are capable of autovectorization for ISA extensions like AltiVec and SPE. If we happen to build with one of those compilers we will get SPE instructions in random kernel code. Today we only allow basic interger code in the kernel and FP, AltiVec, or SPE in special explicit locations that have handled the proper saving and restoring of the register state (since on uniprocessor we lazy context switch the register state for FP, AltiVec, and SPE). -mno-spe disables the compiler for automatically generating SPE instructions without our knowledge. Signed-off-by: Kumar Gala --- arch/powerpc/Makefile | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/powerpc') diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 4e165342210a..bd87626c1f60 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -107,6 +107,9 @@ endif # No AltiVec instruction when building kernel KBUILD_CFLAGS += $(call cc-option,-mno-altivec) +# No SPE instruction when building kernel +KBUILD_CFLAGS += $(call cc-option,-mno-spe) + # Enable unit-at-a-time mode when possible. It shrinks the # kernel considerably. KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) -- cgit v1.2.3-59-g8ed1b From 4c011b1fb853776459c7d3d7de7b14fa41f28c46 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Fri, 12 Oct 2007 15:19:11 -0500 Subject: [POWERPC] cpm: Fix a couple minor issues in cpm_common.c. A debugging printk is removed, and a comment is fixed to match the code. Signed-off-by: Scott Wood Signed-off-by: Kumar Gala --- arch/powerpc/sysdev/cpm_common.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) (limited to 'arch/powerpc') diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c index 66c8ad4cfce6..165981c87786 100644 --- a/arch/powerpc/sysdev/cpm_common.c +++ b/arch/powerpc/sysdev/cpm_common.c @@ -77,8 +77,6 @@ int __init cpm_muram_init(void) int i = 0; int ret = 0; - printk("cpm_muram_init\n"); - spin_lock_init(&cpm_muram_lock); /* initialize the info header */ rh_init(&cpm_muram_info, 1, @@ -193,7 +191,7 @@ void __iomem *cpm_muram_addr(unsigned long offset) EXPORT_SYMBOL(cpm_muram_addr); /** - * cpm_muram_phys - turn a muram virtual address into a DMA address + * cpm_muram_dma - turn a muram virtual address into a DMA address * @offset: virtual address from cpm_muram_addr() to convert */ dma_addr_t cpm_muram_dma(void __iomem *addr) -- cgit v1.2.3-59-g8ed1b