[-v3,0/3] resource: Fix region_intersects() vs add_memory_driver_managed()

Message ID	20240906030713.204292-1-ying.huang@intel.com (mailing list archive)
Headers	show Return-Path: <owner-linux-mm@kvack.org> From: Huang Ying <ying.huang@intel.com> To: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-cxl@vger.kernel.org, "Huang, Ying" <ying.huang@intel.com>, Dan Williams <dan.j.williams@intel.com>, David Hildenbrand <david@redhat.com>, Davidlohr Bueso <dave@stgolabs.net>, Jonathan Cameron <jonathan.cameron@huawei.com>, Dave Jiang <dave.jiang@intel.com>, Alison Schofield <alison.schofield@intel.com>, Vishal Verma <vishal.l.verma@intel.com>, Ira Weiny <ira.weiny@intel.com>, Alistair Popple <apopple@nvidia.com>, Andy Shevchenko <andriy.shevchenko@linux.intel.com>, Bjorn Helgaas <bhelgaas@google.com>, Baoquan He <bhe@redhat.com> Subject: [PATCH -v3 0/3] resource: Fix region_intersects() vs add_memory_driver_managed() Date: Fri, 6 Sep 2024 11:07:10 +0800 Message-Id: <20240906030713.204292-1-ying.huang@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Precedence: bulk
Series	resource: Fix region_intersects() vs add_memory_driver_managed() \| expand [-v3,0/3] resource: Fix region_intersects() vs add_memory_driver_managed() [-v3,1/3] resource: Fix region_intersects() vs add_memory_driver_managed() [-v3,2/3] resource: Make alloc_free_mem_region() works for iomem_resource [-v3,3/3] resource, kunit: Add test case for region_intersects()

Message ID

20240906030713.204292-1-ying.huang@intel.com (mailing list archive)

Headers

From: Huang Ying <ying.huang@intel.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	linux-cxl@vger.kernel.org,
	"Huang, Ying" <ying.huang@intel.com>,
	Dan Williams <dan.j.williams@intel.com>,
	David Hildenbrand <david@redhat.com>,
	Davidlohr Bueso <dave@stgolabs.net>,
	Jonathan Cameron <jonathan.cameron@huawei.com>,
	Dave Jiang <dave.jiang@intel.com>,
	Alison Schofield <alison.schofield@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>,
	Ira Weiny <ira.weiny@intel.com>,
	Alistair Popple <apopple@nvidia.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Baoquan He <bhe@redhat.com>
Subject: [PATCH -v3 0/3] resource: Fix region_intersects() vs
 add_memory_driver_managed()
Date: Fri,  6 Sep 2024 11:07:10 +0800
Message-Id: <20240906030713.204292-1-ying.huang@intel.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: owner-linux-mm@kvack.org
Precedence: bulk

Series

resource: Fix region_intersects() vs add_memory_driver_managed() | expand

Message

Huang, Ying Sept. 6, 2024, 3:07 a.m. UTC

The patchset fixes a bug of region_intersects() for systems with CXL
memory.  The details of the bug can be found in [1/3].  To avoid
similar bugs in the future.  A kunit test case for region_intersects()
is added in [3/3].  [2/3] is a preparation patch for [3/3].

Changelogs:

v3:

- Revise the patch subject, description and comments, Thanks Bjorn,
  Andy, David, and Dan!

- Added a kunit test case.

- Fixed several coding style issues, Thanks Andy!

- Link to v2: https://lore.kernel.org/linux-mm/20240819023413.1109779-1-ying.huang@intel.com/

v2:

- Fix a bug which occurs when descendant of a matched resource matches.

- Revise the patch description and comments to make the algorithm clearer.
  Thanks Dan and David's comments!

- Link to v1: https://lore.kernel.org/linux-mm/20240816020723.771196-1-ying.huang@intel.com/

Best Regards,
Huang, Ying