Intel To Finally Remove Cannon Lake Graphics Support From Their Linux Kernel Driver
Written by Michael Larabel in Intel on 24 July 2021 at 12:00 AM EDT. 4 Comments
INTEL --
Intel "Cannon Lake" processors were rare in the first place with being limited to the Core i3 8121U but given that no production SKU ever materialized with the "Gen10" graphics enabled, Intel's Linux engineers are finally moving ahead in eliminating the rest of the Cannon Lake / Gen10 graphics support code.

Last year saw Intel CNL / Gen10 support removed from their Mesa drivers while on the table now is eliminating the kernel driver support with the i915 Direct Rendering Manager driver.

Sent out on Friday night were the patches to eliminate the Cannon Lake "CNL" support from Intel's Linux kernel graphics driver, "This removes CNL completely from the driver, while trying to rename functions and macros where appropriate (usually to GLK when dealing with display or with ICL otherwise). It starts with display, which is more straightforward, and then proceed to the rest of i915."

On top of reducing their user-space Intel Mesa driver code size by nearly 11,000 lines of code, removing the Gen10 support from their kernel graphics driver lowers that size by about 1,600 lines of code. The removal is spread across 30 patches now under review for eliminating this defunct microarchitecture.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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