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Matt Roper
7a060d786c
On MTL and beyond, the GPU performs non-coherent accesses to the PPGTT page tables. These page tables should be mapped as CPU:WC. Removes CAT errors triggered by xe_exec_basic@once-basic on MTL: xe 0000:00:02.0: [drm:__xe_pt_bind_vma [xe]] Preparing bind, with range [1a0000...1a0fff) engine 0000000000000000. xe 0000:00:02.0: [drm:xe_vm_dbg_print_entries [xe]] 1 entries to update xe 0000:00:02.0: [drm:xe_vm_dbg_print_entries [xe]] 0: Update level 3 at (0 + 1) [0...8000000000) f:0 xe 0000:00:02.0: [drm] Engine memory cat error: guc_id=2 xe 0000:00:02.0: [drm] Engine memory cat error: guc_id=2 xe 0000:00:02.0: [drm] Timedout job: seqno=4294967169, guc_id=2, flags=0x4 v2: - Rename to XE_BO_PAGETABLE to make it more clear that this BO is the pagetable itself, rather than just being bound in the PPGTT. (Lucas) Cc: Lucas De Marchi <lucas.demarchi@intel.com> Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> Acked-by: Nirmoy Das <nirmoy.das@intel.com> Link: https://lore.kernel.org/r/20230725003433.1992137-3-matthew.d.roper@intel.com Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@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 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.