Mesa has been issuing a single bind operation per ioctl since xe.ko changed to GPUVA due xe.ko bug #746. If I change Mesa to try again to issue every single bind operation it can in the same ioctl, it hits the MAX_BINDS assertion when running Vulkan conformance tests. Test dEQP-VK.sparse_resources.transfer_queue.3d.rgba32i.1024_128_8 issues 960 bind operations in a single ioctl, it's the most I could find in the conformance suite. I don't see a reason to keep the MAX_BINDS restriction: it doesn't seem to be preventing any specific issue. If the number is too big for the memory allocations, then those will fail. Nothing related to num_binds seems to be using the stack. Let's just get rid of it. Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs") Testcase: dEQP-VK.sparse_resources.transfer_queue.3d.rgba32i.1024_128_8 References: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/746 Cc: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Matthew Brost <matthew.brost@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240215005353.1295420-1-paulo.r.zanoni@intel.com (cherry picked from commit ba6bbdc6eaef92998ec7f323c9e1211d344d2556) Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.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.
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