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acf5d49aaf
Cache tag invalidation requests for a domain are accumulated until a different iommu unit is found when traversing the cache_tags linked list. But cache tags of same iommu unit can be distributed in the linked list, this make batched flush less efficient. E.g., one device backed by iommu0 is attached to a domain in between two devices attaching backed by iommu1. Group cache tags together for same iommu unit in cache_tag_assign() to maximize the performance of batched flush. Co-developed-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com> Link: https://lore.kernel.org/r/20241219054358.8654-1-zhenzhong.duan@intel.com Signed-off-by: Joerg Roedel <jroedel@suse.de> |
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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 reStructuredText 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.