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79e419c9d1
It is expected that VFs activity will be monitored and in some
cases admin might want to silence specific VF without killing
the VM where it was attached.
Add write-only attribute to stop GuC scheduling at VFs level.
/sys/bus/pci/drivers/xe/BDF/
├── sriov_admin/
├── vf1/
│ └── stop [WO] bool
├── vf2/
│ └── stop [WO] bool
Writing "1" or "y" (or whatever is recognized by the strtobool()
function) to this file will trigger the change of the VF state
to STOP (GuC will stop servicing the VF). To go back to a READY
state (to allow GuC to service this VF again) the VF FLR must be
triggered (which can be done by writing 1 to device/reset file).
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Piotr Piórkowski <piotr.piorkowski@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patch.msgid.link/20251030222348.186658-17-michal.wajdeczko@intel.com
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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.