linux-kernel - [PATCH v4 0/4] Merge contiguous physical memory regions

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Message-ID: <20211103140035.2001-1-longpeng2@huawei.com>
Date:   Wed, 3 Nov 2021 22:00:31 +0800
From:   "Longpeng(Mike)" <longpeng2@...wei.com>
To:     <andraprs@...zon.com>, <lexnv@...zon.com>, <alcioa@...zon.com>
CC:     <arei.gonglei@...wei.com>, <gregkh@...uxfoundation.org>,
        <kamal@...onical.com>, <pbonzini@...hat.com>,
        <sgarzare@...hat.com>, <stefanha@...hat.com>,
        <vkuznets@...hat.com>, <linux-kernel@...r.kernel.org>,
        <ne-devel-upstream@...zon.com>, Longpeng <longpeng2@...wei.com>
Subject: [PATCH v4 0/4] Merge contiguous physical memory regions

From: Longpeng <longpeng2@...wei.com>

Hi guys,

This patchset try to merge the contiguous physical memory regions when
set user memory regions, you can see message in PATCH 1 for details.
Please review when you free, thank!

Changes v3 -> v4:
  Patch 1:
    - move "#include <linux/range.h>" according to the alphabetical order. [Andra]
    - rename several variables, parameters, structures and functions.  [Andra]
    - add missing "Context" in the comments.  [Andra]
    - some other changes to makes the code much neater.  [Andra]
  Patch 2:
    - add missing "Context" in the comments.  [Andra]
    - move the comment in ne_merge_phys_contig_memory_regions() before
      the "if (...)". [Andra]
  Patch 3:
    - Nitro enclaves -> Nitro Enclaves   [Andra]
    - check the return code of "ne_misc_dev_test_init()"  [Andra]
    - GPL-2.0-or-later -> GPL-2.0  [Andra]
  Patch 4:
    - "int expect_num" -> "unsigned long  expect_num"  [Andra]
    - rename several variables and structures  [Andra]
    - invoke "kunit_kfree" to free the "regions"  [Andra]

Changes v2 -> v3:
  Patch 1:
    - update the commit title and commit message.  [Andra]
    - use 'struct range' to instead of 'struct phys_mem_region'.  [Andra, Greg KH]
    - add comments before the function definition.  [Andra]
    - rename several variables, parameters and function.  [Andra]
  Patch 2:
    - update the commit title and commit message.  [Andra]
    - add comments before the function definition.  [Andra]
    - remove 'inline' attribute of ne_sanity_check_phys_mem_region. [Andra]
    - leave a blank line before return.  [Andra]
    - move sanity check in ne_merge_phys_contig_memory_regions to
      the beginning of the function.  [Andra]
    - double sanity checking after the merge of physical contiguous
      memory regions has been completed.  [Andra]
  Patch 3:
    - update the commit title and commit message.  [Andra]
    - use "misc_dev"/"misc device"/"MISC_DEV" to be more specific.  [Andra]
  Patch 4:
    - update the commit title and commit message.  [Andra]
    - align the fileds in 'struct phys_regions_test'.  [Andra]
    - rename 'phys_regions_testcases' to 'phys_regions_test_cases'.  [Andra]
    - add comments before each test cases.  [Andra]
    - initialize the variables in ne_misc_dev_test_merge_phys_contig_memory_regions.  [Andra]

Changes v1 -> v2:
  - update the commit message as Andra's suggestion  [Andra]
  - remove TODO completely in ne_set_user_memory_region_ioctl  [Andra]
  - extract the physical memory regions setup into individual
    function
  - add kunit tests  [Andra]


Longpeng (4):
  nitro_enclaves: Merge contiguous physical memory regions
  nitro_enclaves: Sanity check physical memory regions during merging
  nitro_enclaves: Add KUnit tests setup for the misc device
    functionality
  nitro_enclaves: Add KUnit tests for contiguous physical memory regions
    merging

 drivers/virt/nitro_enclaves/Kconfig            |   9 ++
 drivers/virt/nitro_enclaves/ne_misc_dev.c      | 173 ++++++++++++++++++-------
 drivers/virt/nitro_enclaves/ne_misc_dev_test.c | 156 ++++++++++++++++++++++
 3 files changed, 294 insertions(+), 44 deletions(-)
 create mode 100644 drivers/virt/nitro_enclaves/ne_misc_dev_test.c

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1.8.3.1