We avoid adding unconditionally the 64-bytes padding to all usages
of the vulkan memory allocations. The readahead padding is only added
for buffers/images with USAGE_TRANSFER_SRC_BIT usage enabled as this
is enough for having a full vk-cts without reported MMU TFU errors.
vk-cts doesn't exercise the added image memory requirements codepath to
handle this readahead. This is because the required 64-bytes image
alignments for images with flag VK_IMAGE_USAGE_TRANSFER_SRC_BIT.
But the alignment didn't cover when the image is already aligned to
64-bytes at the end of the memory page.
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36159>
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