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f780a8dc19
We use RCU's for rarely updated lists like iommus, rmrr, atsr units. I'm not sure why domain_remove_dev_info() in domain_exit() was surrounded by rcu_read_lock. Lock was present before refactoring ind160aca527, but it was related to rcu list, not domain_remove_dev_info function. dmar_remove_one_dev_info() doesn't touch any of those lists, so it doesn't require a lock. In fact it is called 6 times without it anyway. Fixes:d160aca527("iommu/vt-d: Unify domain->iommu attach/detachment") Signed-off-by: Lukasz Odzioba <lukasz.odzioba@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.