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.
