Messages in this thread | | | From | Len Brown <> | Date | Fri, 26 Mar 2021 11:33:47 -0400 | Subject | Re: [PATCH v4 22/22] x86/fpu/xstate: Introduce boot-parameters to control state component support |
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On Thu, Mar 25, 2021 at 9:42 PM Andy Lutomirski <luto@kernel.org> wrote:
> Regardless of what you call AMX, AMX requires kernel enabling.
I submit, that after the generic XFD support is in place, there is exactly 1 bit that needs to be flipped to enable user applications to benefit from AMX.
I submit the patch that knows about AMX and double checks the state size is superfluous.
I submit that updating /proc/cpuinfo is superfluous.
What AMX-specific kernel enabling did I miss?
> Specifically, it appears that leaving AMX in use in the XINUSE sense > degrades system performance and/or power.
Please share the specifics about what performance or power issue you anticipate.
thanks, -Len
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