[PATCH 0/6] x86/cpufeature: Cleanups and improvements v1

From: Borislav Petkov
Date: Sun Jan 24 2016 - 04:30:57 EST


From: Borislav Petkov <bp@xxxxxxx>

Ok, here's v1. This time it has been boot-tested on boxes here. I have
added patch 6 which needs Andy to look at.

Patchset is ontop of tip/master because Linus master has currently a bug
which doesn't really let me do testing on 32-bit:

https://lkml.kernel.org/r/20160122181450.GI9806@xxxxxxx

Anyway, please take a look.

Thanks.




Changelog:

v0:
So here's the first version of what we talked about. I've ran randbuilds
on it for a night because of patch 1 with all the header reorg and we
all know how that can be painful. So this version passes all randbuild
configs I had generated.

In talking about patch 1, it is a bit big but if you look at the
diffstat, it basically is fixing a bunch of includes and the meat of it
being the carving out of the X86_FEATURE_* things to a separate file.

Rest of the patches should be pretty self-explanatory, check the
respective commit messages.

I haven't tested it functionally yet (booting in kvm doesn't really
count) - thus the RFC tag. I thought I should send it out first so that
people can doublecheck me on the direction this is going.


Borislav Petkov (5):
x86/cpufeature: Carve out X86_FEATURE_*
x86/cpufeature: Replace the old static_cpu_has() with safe variant
x86/cpufeature: Get rid of the non-asm goto variant
x86/alternatives: Add an auxilary section
x86/vdso: Use static_cpu_has()

Brian Gerst (1):
x86/alternatives: Discard dynamic check after init

Documentation/kernel-parameters.txt | 2 +-
arch/x86/Kconfig.debug | 10 -
arch/x86/boot/cpuflags.h | 2 +-
arch/x86/boot/mkcpustr.c | 2 +-
arch/x86/crypto/crc32-pclmul_glue.c | 2 +-
arch/x86/crypto/crc32c-intel_glue.c | 2 +-
arch/x86/crypto/crct10dif-pclmul_glue.c | 2 +-
arch/x86/entry/common.c | 1 +
arch/x86/entry/entry_32.S | 2 +-
arch/x86/entry/vdso/vdso32-setup.c | 1 -
arch/x86/entry/vdso/vdso32/system_call.S | 2 +-
arch/x86/entry/vdso/vma.c | 3 +-
arch/x86/include/asm/alternative.h | 6 -
arch/x86/include/asm/apic.h | 1 -
arch/x86/include/asm/arch_hweight.h | 2 +
arch/x86/include/asm/cmpxchg.h | 1 +
arch/x86/include/asm/cpufeature.h | 446 ++-----------------------------
arch/x86/include/asm/cpufeatures.h | 288 ++++++++++++++++++++
arch/x86/include/asm/fpu/internal.h | 15 +-
arch/x86/include/asm/irq_work.h | 2 +-
arch/x86/include/asm/mwait.h | 2 +
arch/x86/include/asm/processor.h | 3 +-
arch/x86/include/asm/smap.h | 2 +-
arch/x86/include/asm/smp.h | 1 -
arch/x86/include/asm/thread_info.h | 2 +-
arch/x86/include/asm/tlbflush.h | 1 +
arch/x86/include/asm/uaccess_64.h | 2 +-
arch/x86/kernel/apic/apic_numachip.c | 4 +-
arch/x86/kernel/cpu/Makefile | 2 +-
arch/x86/kernel/cpu/centaur.c | 2 +-
arch/x86/kernel/cpu/common.c | 14 -
arch/x86/kernel/cpu/cyrix.c | 1 +
arch/x86/kernel/cpu/intel.c | 2 +-
arch/x86/kernel/cpu/intel_cacheinfo.c | 2 +-
arch/x86/kernel/cpu/match.c | 2 +-
arch/x86/kernel/cpu/mkcapflags.sh | 6 +-
arch/x86/kernel/cpu/mtrr/main.c | 2 +-
arch/x86/kernel/cpu/transmeta.c | 2 +-
arch/x86/kernel/e820.c | 1 +
arch/x86/kernel/head_32.S | 2 +-
arch/x86/kernel/hpet.c | 1 +
arch/x86/kernel/msr.c | 2 +-
arch/x86/kernel/verify_cpu.S | 2 +-
arch/x86/kernel/vm86_32.c | 2 +-
arch/x86/kernel/vmlinux.lds.S | 11 +
arch/x86/lib/clear_page_64.S | 2 +-
arch/x86/lib/copy_page_64.S | 2 +-
arch/x86/lib/copy_user_64.S | 2 +-
arch/x86/lib/memcpy_64.S | 2 +-
arch/x86/lib/memmove_64.S | 2 +-
arch/x86/lib/memset_64.S | 2 +-
arch/x86/mm/setup_nx.c | 1 +
arch/x86/oprofile/op_model_amd.c | 1 -
arch/x86/um/asm/barrier.h | 2 +-
drivers/cpufreq/intel_pstate.c | 2 +-
fs/btrfs/disk-io.c | 2 +-
lib/atomic64_test.c | 2 +-
57 files changed, 381 insertions(+), 506 deletions(-)
create mode 100644 arch/x86/include/asm/cpufeatures.h

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2.3.5