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The functions backing the matrix mdev's sysfs attribute interfaces to assign/unassign adapters, domains and control domains must take and release the locks required to perform a dynamic update of a guest's APCB in the proper order. The proper order for taking the locks is: matrix_dev->guests_lock => kvm->lock => matrix_dev->mdevs_lock The proper order for releasing the locks is: matrix_dev->mdevs_lock => kvm->lock => matrix_dev->guests_lock Two new macros are introduced for this purpose: One to take the locks and the other to release the locks. These macros will be used by the assignment/unassignment functions to prepare for dynamic update of the KVM guest's APCB. Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.