On 5/23/2019 2:10 AM, Jinke Fan wrote:
Hi, This patch adds vendor id detection for Hygon Dhyana CPUs. Could anyone help me with submit it? More details can be found on: http://lkml.kernel.org/r/5ce86123a7b9dad925ac583d88d2f921040e859b.1538583282.git.pu...@hygon.cn
Why would this be needed? I just had to look up what this actually is and it doesn't seem to be necessary to distinguish between that particular CPU (quote from Wikipedia):
The initial microprocessor created in 2018 is the Hygon Dhyana <https://en.wikipedia.org/wiki/AMD_Epyc#Chinese_variants> system on a chip <https://en.wikipedia.org/wiki/System_on_a_chip>.^[1] <https://en.wikipedia.org/wiki/AMD%E2%80%93Chinese_joint_venture#cite_note-2018-toms-hardware-1> ^[2] <https://en.wikipedia.org/wiki/AMD%E2%80%93Chinese_joint_venture#cite_note-2018-phoronix-2> It is noted to be a variant of the AMD EPYC <https://en.wikipedia.org/wiki/EPYC> and is so similar that "there is little to no differentiation between the chips".^[1] <https://en.wikipedia.org/wiki/AMD%E2%80%93Chinese_joint_venture#cite_note-2018-toms-hardware-1> It has been noted that there is "less than 200 lines of new kernel code" for Linux <https://en.wikipedia.org/wiki/Linux> kernel support, and that the Dhyana is "mostly a re-branded Zen CPU for the Chinese server market".^[2] <https://en.wikipedia.org/wiki/AMD%E2%80%93Chinese_joint_venture#cite_note-2018-phoronix-2>
^Are you aware of any specifics of that processor that it would require a distinction and direct support for that CPU version, beside the geek factor?
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