linux-kernel - [GIT PULL v2] x86/mm changes for v5.8

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Date:   Thu, 4 Jun 2020 19:29:04 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Balbir Singh <sblbir@...zon.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Borislav Petkov <bp@...en8.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Lutomirski <luto@...nel.org>
Subject: [GIT PULL v2] x86/mm changes for v5.8


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> I really get the feeling that this feature just isn't ready.
> 
> Ingo - would you mind sending me a pull request for the (independent)
> TLB cleanups part of that x86/mm tree? Because everything up to and
> including commit bd1de2a7aace ("x86/tlb/uv: Add a forward declaration
> for struct flush_tlb_info") looks sane.

Yeah, agreed, in fact we moved x86/mm back to bd1de2a7aace almost 
immediately and put the L1D bits into WIP.x86/mm. Fortunately they are 
on top of the rest, as you noted, so it didn't have to be rebased.

> It's only this L1D$ flushing thing at the end of that branch that I 
> think isn't fully cooked.

Yeah, sure - here's the updated pull request for the rest:

   git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-mm-2020-06-04

   # HEAD: bd1de2a7aace4d1d312fb1be264b8fafdb706208 x86/tlb/uv: Add a forward declaration for struct flush_tlb_info

Misc changes:

 - Unexport various PAT primitives

 - Unexport per-CPU tlbstate

 Thanks,

	Ingo

------------------>
Borislav Petkov (1):
      x86/tlb/uv: Add a forward declaration for struct flush_tlb_info

Christoph Hellwig (5):
      x86/mm: Add a x86_has_pat_wp() helper
      x86/mm: Move pgprot2cachemode out of line
      x86/mm: Cleanup pgprot_4k_2_large() and pgprot_large_2_4k()
      x86/mm: Unexport __cachemode2pte_tbl
      x86/mm: Use pgprotval_t in protval_4k_2_large() and protval_large_2_4k()

Thomas Gleixner (17):
      x86/tlb: Uninline __get_current_cr3_fast()
      x86/cpu: Uninline CR4 accessors
      x86/cr4: Sanitize CR4.PCE update
      x86/alternatives: Move temporary_mm helpers into C
      x86/tlb: Move __flush_tlb() out of line
      x86/tlb: Move __flush_tlb_global() out of line
      x86/tlb: Move __flush_tlb_one_user() out of line
      x86/tlb: Move __flush_tlb_one_kernel() out of line
      x86/tlb: Move flush_tlb_others() out of line
      x86/tlb: Move __flush_tlb_all() out of line
      x86/tlb: Move paravirt_tlb_remove_table() to the usage site
      x86/tlb: Move cr4_set_bits_and_update_boot() to the usage site
      x86/tlb: Uninline nmi_uaccess_okay()
      x86/tlb: Move PCID helpers where they are used
      xen/privcmd: Remove unneeded asm/tlb.h include
      x86/tlb: Restrict access to tlbstate
      x86/cpu: Export native_write_cr4() only when CONFIG_LKTDM=m


 arch/x86/events/core.c               |  11 +-
 arch/x86/include/asm/memtype.h       |   3 +
 arch/x86/include/asm/mmu_context.h   |  88 +------
 arch/x86/include/asm/paravirt.h      |  12 +-
 arch/x86/include/asm/pgtable_32.h    |   2 +-
 arch/x86/include/asm/pgtable_types.h |  44 +---
 arch/x86/include/asm/tlbflush.h      | 441 ++++-------------------------------
 arch/x86/include/asm/uv/uv.h         |   1 +
 arch/x86/kernel/alternative.c        |  55 +++++
 arch/x86/kernel/cpu/common.c         |  25 +-
 arch/x86/kernel/cpu/mtrr/generic.c   |   4 +-
 arch/x86/kernel/paravirt.c           |  21 +-
 arch/x86/kernel/process.c            |  11 +
 arch/x86/mm/init.c                   |  44 +++-
 arch/x86/mm/init_64.c                |   4 +-
 arch/x86/mm/ioremap.c                |  10 +-
 arch/x86/mm/kmmio.c                  |   2 +-
 arch/x86/mm/mem_encrypt.c            |   2 +-
 arch/x86/mm/pat/set_memory.c         |   7 +-
 arch/x86/mm/pgtable.c                |  16 +-
 arch/x86/mm/pgtable_32.c             |   2 +-
 arch/x86/mm/tlb.c                    | 384 +++++++++++++++++++++++++++++-
 arch/x86/platform/uv/tlb_uv.c        |   4 +-
 drivers/xen/privcmd.c                |   1 -
 24 files changed, 608 insertions(+), 586 deletions(-)