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

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Date:	Sun, 24 Jan 2016 10:28:42 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Brian Gerst <brgerst@...il.com>, X86 ML <x86@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 0/6] x86/cpufeature: Cleanups and improvements v1

From: Borislav Petkov <bp@...e.de>

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@pd.tnic

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

-- 
2.3.5