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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-15 20:52:47 +0100 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-12-15 20:52:47 +0100 |
commit | 908bfda754a9e972c4728832513b11153bd3a140 (patch) | |
tree | 64181a7a70f2ad49ae01042f9284d190f7c51d7f /arch | |
parent | Merge tag 'pci-v3.13-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/gi... (diff) | |
parent | x86, efi: Don't use (U)EFI time services on 32 bit (diff) | |
download | linux-908bfda754a9e972c4728832513b11153bd3a140.tar.xz linux-908bfda754a9e972c4728832513b11153bd3a140.zip |
Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
"This is a pretty small batch:
The biggest single change is to stop using EFI time services on 32-bit
platforms. This matches our current behavior on 64-bit platforms as
we already had ruled them out there as being too unreliable. Turns
out that affects 32-bit platforms, too.
One NULL pointer fix for SGI UV.
Two minor build fixes, one of which only affects icc and the other
which affects icc and future versions or nonstandard default settings
of gcc"
* 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, efi: Don't use (U)EFI time services on 32 bit
x86, build, icc: Remove uninitialized_var() from compiler-intel.h
x86/UV: Fix NULL pointer dereference in uv_flush_tlb_others() if the 'nobau' boot option is used
x86, build: Pass in additional -mno-mmx, -mno-sse options
Diffstat (limited to 'arch')
-rw-r--r-- | arch/x86/Makefile | 8 | ||||
-rw-r--r-- | arch/x86/boot/Makefile | 6 | ||||
-rw-r--r-- | arch/x86/boot/compressed/Makefile | 1 | ||||
-rw-r--r-- | arch/x86/platform/efi/efi.c | 7 | ||||
-rw-r--r-- | arch/x86/platform/uv/tlb_uv.c | 5 | ||||
-rw-r--r-- | arch/x86/realmode/rm/Makefile | 3 |
6 files changed, 13 insertions, 17 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index eda00f9be0cf..57d021507120 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -31,8 +31,8 @@ ifeq ($(CONFIG_X86_32),y) KBUILD_CFLAGS += -msoft-float -mregparm=3 -freg-struct-return - # Don't autogenerate SSE instructions - KBUILD_CFLAGS += -mno-sse + # Don't autogenerate MMX or SSE instructions + KBUILD_CFLAGS += -mno-mmx -mno-sse # Never want PIC in a 32-bit kernel, prevent breakage with GCC built # with nonstandard options @@ -60,8 +60,8 @@ else KBUILD_AFLAGS += -m64 KBUILD_CFLAGS += -m64 - # Don't autogenerate SSE instructions - KBUILD_CFLAGS += -mno-sse + # Don't autogenerate MMX or SSE instructions + KBUILD_CFLAGS += -mno-mmx -mno-sse # Use -mpreferred-stack-boundary=3 if supported. KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3) diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile index dce69a256896..d9c11956fce0 100644 --- a/arch/x86/boot/Makefile +++ b/arch/x86/boot/Makefile @@ -53,18 +53,18 @@ $(obj)/cpustr.h: $(obj)/mkcpustr FORCE # How to compile the 16-bit code. Note we always compile for -march=i386, # that way we can complain to the user if the CPU is insufficient. -KBUILD_CFLAGS := $(USERINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ +KBUILD_CFLAGS := $(USERINCLUDE) -m32 -g -Os -D_SETUP -D__KERNEL__ \ -DDISABLE_BRANCH_PROFILING \ -Wall -Wstrict-prototypes \ -march=i386 -mregparm=3 \ -include $(srctree)/$(src)/code16gcc.h \ -fno-strict-aliasing -fomit-frame-pointer -fno-pic \ + -mno-mmx -mno-sse \ $(call cc-option, -ffreestanding) \ $(call cc-option, -fno-toplevel-reorder,\ - $(call cc-option, -fno-unit-at-a-time)) \ + $(call cc-option, -fno-unit-at-a-time)) \ $(call cc-option, -fno-stack-protector) \ $(call cc-option, -mpreferred-stack-boundary=2) -KBUILD_CFLAGS += $(call cc-option, -m32) KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ GCOV_PROFILE := n diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile index dcd90df10ab4..c8a6792e7842 100644 --- a/arch/x86/boot/compressed/Makefile +++ b/arch/x86/boot/compressed/Makefile @@ -13,6 +13,7 @@ KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING cflags-$(CONFIG_X86_32) := -march=i386 cflags-$(CONFIG_X86_64) := -mcmodel=small KBUILD_CFLAGS += $(cflags-y) +KBUILD_CFLAGS += -mno-mmx -mno-sse KBUILD_CFLAGS += $(call cc-option,-ffreestanding) KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector) diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index 92c02344a060..cceb813044ef 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -690,13 +690,6 @@ void __init efi_init(void) set_bit(EFI_MEMMAP, &x86_efi_facility); -#ifdef CONFIG_X86_32 - if (efi_is_native()) { - x86_platform.get_wallclock = efi_get_time; - x86_platform.set_wallclock = efi_set_rtc_mmss; - } -#endif - #if EFI_DEBUG print_efi_memmap(); #endif diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index 0f92173a12b6..efe4d7220397 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -1070,12 +1070,13 @@ const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask, unsigned long status; bcp = &per_cpu(bau_control, cpu); - stat = bcp->statp; - stat->s_enters++; if (bcp->nobau) return cpumask; + stat = bcp->statp; + stat->s_enters++; + if (bcp->busy) { descriptor_status = read_lmmr(UVH_LB_BAU_SB_ACTIVATION_STATUS_0); diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile index 88692871823f..9cac82588cbc 100644 --- a/arch/x86/realmode/rm/Makefile +++ b/arch/x86/realmode/rm/Makefile @@ -73,9 +73,10 @@ KBUILD_CFLAGS := $(LINUXINCLUDE) -m32 -g -Os -D_SETUP -D__KERNEL__ -D_WAKEUP \ -march=i386 -mregparm=3 \ -include $(srctree)/$(src)/../../boot/code16gcc.h \ -fno-strict-aliasing -fomit-frame-pointer -fno-pic \ + -mno-mmx -mno-sse \ $(call cc-option, -ffreestanding) \ $(call cc-option, -fno-toplevel-reorder,\ - $(call cc-option, -fno-unit-at-a-time)) \ + $(call cc-option, -fno-unit-at-a-time)) \ $(call cc-option, -fno-stack-protector) \ $(call cc-option, -mpreferred-stack-boundary=2) KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ |