mirror of
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1c31964eca
commit9ad9f45b3bupstream. 'struct intel_svm' is shared by all devices bound to a give process, but records only a single pointer to a 'struct intel_iommu'. Consequently, cache invalidations may only be applied to a single DMAR unit, and are erroneously skipped for the other devices. In preparation for fixing this, rework the structures so that the iommu pointer resides in 'struct intel_svm_dev', allowing 'struct intel_svm' to track them in its device list. Fixes:1c4f88b7f1("iommu/vt-d: Shared virtual address in scalable mode") Cc: Lu Baolu <baolu.lu@linux.intel.com> Cc: Jacob Pan <jacob.jun.pan@linux.intel.com> Cc: Raj Ashok <ashok.raj@intel.com> Cc: David Woodhouse <dwmw2@infradead.org> Reported-by: Guo Kaijie <Kaijie.Guo@intel.com> Reported-by: Xin Zeng <xin.zeng@intel.com> Signed-off-by: Guo Kaijie <Kaijie.Guo@intel.com> Signed-off-by: Xin Zeng <xin.zeng@intel.com> Signed-off-by: Liu Yi L <yi.l.liu@intel.com> Tested-by: Guo Kaijie <Kaijie.Guo@intel.com> Cc: stable@vger.kernel.org # v5.0+ Acked-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/1609949037-25291-2-git-send-email-yi.l.liu@intel.com Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.