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Joerg Roedel eb791aa70b iommu/amd: Fix race in increase_address_space()/fetch_pte() The 'pt_root' and 'mode' struct members of 'struct protection_domain' need to be get/set atomically, otherwise the page-table of the domain can get corrupted. Merge the fields into one atomic64_t struct member which can be get/set atomically. Fixes: `92d420ec02` ("iommu/amd: Relax locking in dma_ops path") Reported-by: Qian Cai <cai@lca.pw> Signed-off-by: Joerg Roedel <jroedel@suse.de> Tested-by: Qian Cai <cai@lca.pw> Link: https://lore.kernel.org/r/20200504125413.16798-2-joro@8bytes.org Signed-off-by: Joerg Roedel <jroedel@suse.de>		2020-05-05 14:38:38 +02:00
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drivers	iommu/amd: Fix race in increase_address_space()/fetch_pte()	2020-05-05 14:38:38 +02:00
fs	for-5.7-rc3-tag	2020-05-03 11:30:08 -07:00
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README

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.