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b528e896fa
Skipping TLB invalidations on VF causing unrecoverable
faults. Probable reason for skipping TLB invalidations
on SRIOV could be lack of support for instruction
MI_FLUSH_DW_STORE_INDEX. Add back TLB flush with some
additional handling.
Helps in resolving,
[ 704.913454] xe 0000:00:02.1: [drm:pf_queue_work_func [xe]]
ASID: 0
VFID: 0
PDATA: 0x0d92
Faulted Address: 0x0000000002fa0000
FaultType: 0
AccessType: 1
FaultLevel: 0
EngineClass: 3 bcs
EngineInstance: 8
[ 704.913551] xe 0000:00:02.1: [drm:pf_queue_work_func [xe]] Fault response: Unsuccessful -22
V2:
- Use Xmas tree (MichalW)
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Fixes: 97515d0b3e ("drm/xe/vf: Don't emit access to Global HWSP if VF")
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250710045945.1023840-1-tejas.upadhyay@intel.com
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
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.