linux-kernel - [PATCH v2 0/7] mm: Get rid of vmalloc_sync

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Date:   Wed, 13 May 2020 17:21:30 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     x86@...nel.org
Cc:     hpa@...or.com, Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>, rjw@...ysocki.net,
        Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Michal Hocko <mhocko@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Joerg Roedel <jroedel@...e.de>, joro@...tes.org,
        linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
        linux-arch@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH v2 0/7] mm: Get rid of vmalloc_sync_(un)mappings()

Hi,

here is the next post of this series with these changes to the first
version:

	- Rebased to v5.7-rc5

	- As a result of the rebase, also removed the
	  vmalloc_sync_mappings() call from tracing code

	- Added a comment that we rely on the compiler optimizing calls
	  to arch_syn_kernel_mappings() away when
	  ARCH_PAGE_TABLE_SYNC_MASK is 0

The first version can be found here:

	https://lore.kernel.org/lkml/20200508144043.13893-1-joro@8bytes.org/

The cover letter of the first post also has more details on the
motivation for this patch-set.

Please review.

Regards,

	Joerg

Joerg Roedel (7):
  mm: Add functions to track page directory modifications
  mm/vmalloc: Track which page-table levels were modified
  mm/ioremap: Track which page-table levels were modified
  x86/mm/64: Implement arch_sync_kernel_mappings()
  x86/mm/32: Implement arch_sync_kernel_mappings()
  mm: Remove vmalloc_sync_(un)mappings()
  x86/mm: Remove vmalloc faulting

 arch/x86/include/asm/pgtable-2level_types.h |   2 +
 arch/x86/include/asm/pgtable-3level_types.h |   2 +
 arch/x86/include/asm/pgtable_64_types.h     |   2 +
 arch/x86/include/asm/switch_to.h            |  23 ---
 arch/x86/kernel/setup_percpu.c              |   6 +-
 arch/x86/mm/fault.c                         | 176 +-------------------
 arch/x86/mm/init_64.c                       |   5 +
 arch/x86/mm/pti.c                           |   8 +-
 drivers/acpi/apei/ghes.c                    |   6 -
 include/asm-generic/5level-fixup.h          |   5 +-
 include/asm-generic/pgtable.h               |  23 +++
 include/linux/mm.h                          |  46 +++++
 include/linux/vmalloc.h                     |  18 +-
 kernel/notifier.c                           |   1 -
 kernel/trace/trace.c                        |  12 --
 lib/ioremap.c                               |  46 +++--
 mm/nommu.c                                  |  12 --
 mm/vmalloc.c                                | 109 +++++++-----
 18 files changed, 204 insertions(+), 298 deletions(-)

-- 
2.17.1