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74f6d776ae
DMAR domain uses per DMAR refcount. It is indexed by iommu seq_id. Older iommu_count is only incremented and decremented but no decisions are taken based on this refcount. This is not of much use. Hence, remove iommu_count and further simplify domain_detach_iommu() by returning void. Signed-off-by: Parav Pandit <parav@nvidia.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20210530075053.264218-1-parav@nvidia.com Link: https://lore.kernel.org/r/20210610020115.1637656-21-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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.