Re: [patch V4 07/65] x86/fpu: Move inlines where they belong

[Bae, Chang Seok]

On Jun 23, 2021, at 05:01, Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
> 
> They are only used in fpstate_init() and there is no point to have them in
> a header just to make reading the code harder.

<snip>

> -static inline void fpstate_init_xstate(struct xregs_state *xsave)
> -{
> -	/*
> -	 * XRSTORS requires these bits set in xcomp_bv, or it will
> -	 * trigger #GP:
> -	 */
> -	xsave->header.xcomp_bv = XCOMP_BV_COMPACTED_FORMAT | xfeatures_mask_all;
> -}

static void __init setup_init_fpu_buf(void)
{
...

	if (boot_cpu_has(X86_FEATURE_XSAVES))
		init_fpstate.xsave.header.xcomp_bv = XCOMP_BV_COMPACTED_FORMAT |
						     xfeatures_mask_all;


But this line [1] can be exactly replaced with the inline function above. At
least, I don’t see consistency on the mainline.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/x86/kernel/fpu/xstate.c#n460

Thanks,
Chang