linux-kernel - [patch V2 00/30] x86/fpu: Preparatory cleanups for AMX support (part 1)

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Date:   Fri, 15 Oct 2021 03:15:53 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, "Chang S. Bae" <chang.seok.bae@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        "Liu, Jing2" <jing2.liu@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Xiaoyao Li <xiaoyao.li@...el.com>
Subject: [patch V2 00/30] x86/fpu: Preparatory cleanups for AMX support (part 1)

This is the rework of the V1 part-1 series of the effort to support the new
AMX feature:

     https://lore.kernel.org/r/20211011215813.558681373@linutronix.de

This part cleans up existing mess. Historical leftovers, shortcomings and
especially the universal kitchen sink asm/fpu/internal.h which is included
all over the place for the wrong reasons.

This series has a value independent of AMX, but allows to make the
integration and conversion to the new world order of dynamically enabled
feature bits simpler.

The serries is based on:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/fpu

and also available from git:

   git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu-1

The full series which has the full AMX support included can be found at:

   git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/fpu

Changes vs. V1:

  - Fixed the issue in the !XSAVE code path of the kvm UABI copy function -
    Paolo

  - Renamed the KVM functions - Boris, Paolo, Sean

  - Fixed the comments and changelog issues - Boris

Thanks,

	tglx
---
 arch/x86/events/perf_event.h        |    1 
 arch/x86/ia32/ia32_signal.c         |    1 
 arch/x86/include/asm/fpu/api.h      |   31 ++
 arch/x86/include/asm/fpu/internal.h |  530 ------------------------------------
 arch/x86/include/asm/fpu/signal.h   |   13 
 arch/x86/include/asm/fpu/xcr.h      |   11 
 arch/x86/include/asm/fpu/xstate.h   |    6 
 arch/x86/include/asm/pkru.h         |    2 
 arch/x86/kernel/cpu/bugs.c          |    2 
 arch/x86/kernel/cpu/common.c        |    2 
 arch/x86/kernel/fpu/bugs.c          |    2 
 arch/x86/kernel/fpu/core.c          |  161 ++++++++--
 arch/x86/kernel/fpu/init.c          |   29 -
 arch/x86/kernel/fpu/regset.c        |    6 
 arch/x86/kernel/fpu/signal.c        |   21 -
 arch/x86/kernel/fpu/xstate.c        |  172 ++++++-----
 arch/x86/kernel/process.c           |    6 
 arch/x86/kernel/process_32.c        |    5 
 arch/x86/kernel/process_64.c        |    5 
 arch/x86/kernel/ptrace.c            |    1 
 arch/x86/kernel/sev.c               |    2 
 arch/x86/kernel/signal.c            |    1 
 arch/x86/kernel/smpboot.c           |    2 
 arch/x86/kernel/traps.c             |    2 
 arch/x86/kvm/svm/sev.c              |    2 
 arch/x86/kvm/vmx/vmx.c              |    2 
 arch/x86/kvm/x86.c                  |  192 +------------
 arch/x86/math-emu/fpu_entry.c       |    2 
 arch/x86/mm/extable.c               |    4 
 arch/x86/power/cpu.c                |    2 
 b/arch/x86/include/asm/fpu/sched.h  |   68 ++++
 b/arch/x86/kernel/fpu/context.h     |   85 +++++
 b/arch/x86/kernel/fpu/internal.h    |   30 ++
 b/arch/x86/kernel/fpu/legacy.h      |  115 +++++++
 b/arch/x86/kernel/fpu/xstate.h      |  198 +++++++++++++
 35 files changed, 824 insertions(+), 890 deletions(-)