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a8f81ee99f
Call drm_mode_size_dumb() to compute dumb-buffer scanline pitch and buffer size. Align the pitch to a multiple of 8. Align the buffer size according to hardware requirements. Xe's internal calculation allowed for 64-bit wide buffer sizes, but the ioctl's internal checks always verified against 32-bit wide limits. Hance, it is safe to limit the driver code to 32-bit calculations as well. v3: - mention 32-bit calculation in commit description (Matthew) Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Acked-by: Lucas De Marchi <lucas.demarchi@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://lore.kernel.org/r/20250821081918.79786-24-tzimmermann@suse.de