Messages in this thread | | | From | "Edgecombe, Rick P" <> | Subject | Re: [PATCH v6 04/25] x86/fpu/xstate: Introduce kernel dynamic xfeature set | Date | Fri, 15 Sep 2023 00:24:01 +0000 |
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On Thu, 2023-09-14 at 02:33 -0400, Yang Weijiang wrote: > +static void __init init_kernel_dynamic_xfeatures(void) > +{ > + unsigned short cid; > + int i; > + > + for (i = 0; i < ARRAY_SIZE(xsave_kernel_dynamic_xfeatures); > i++) { > + cid = xsave_kernel_dynamic_xfeatures[i]; > + > + if (cid && boot_cpu_has(cid)) > + fpu_kernel_dynamic_xfeatures |= BIT_ULL(i); > + } > +} > +
I think this can be part of the max_features calculation that uses xsave_cpuid_features when you use use a fixed mask like Dave suggested in the other patch.
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