Messages in this thread | | | From | Andy Lutomirski <> | Date | Fri, 2 Oct 2020 10:15:04 -0700 | Subject | Re: [RFC PATCH 22/22] x86/fpu/xstate: Introduce boot-parameters for control some state component support |
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On Thu, Oct 1, 2020 at 1:43 PM Chang S. Bae <chang.seok.bae@intel.com> wrote: > > "xstate.disable=0x6000" will disable AMX on a system that has AMX compiled > into XFEATURE_MASK_USER_SUPPORTED.
Can we please use words for this? Perhaps:
xstate.disable=amx,zmm
and maybe add a list in /proc/cpuinfo or somewhere in /proc or /sys that shows all the currently enabled xsave states.
> > "xstate.enable=0x6000" will enable AMX on a system that does NOT have AMX > compiled into XFEATURE_MASK_USER_SUPPORTED (assuming the kernel is new > enough to support this feature).
This sounds like it will be quite confusing to anyone reading the kernel code to discover that a feature that is not "SUPPORTED" is nonetheless enabled.
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