linux-kernel - Re: [PATCH 2/7] x86, xsave: introduce xstate enable functions

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Date:	Wed, 21 Jul 2010 14:10:14 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Robert Richter <robert.richter@....com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/7] x86, xsave: introduce xstate enable functions

On 07/21/2010 10:03 AM, Robert Richter wrote:
> The patch renames xsave_cntxt_init() and __xsave_init() into
> xstate_enable_boot_cpu() and xstate_enable() as this names are more
> meaningful.
> 
> It also removes the duplicate xcr setup for the boot cpu.
> 
> Signed-off-by: Robert Richter <robert.richter@....com>

> -static void __cpuinit xsave_cntxt_init(void)
> +static void __cpuinit xstate_enable_boot_cpu(void)
>  {
>  	unsigned int eax, ebx, ecx, edx;
>  
> @@ -443,7 +438,8 @@ static void __cpuinit xsave_cntxt_init(void)
>  	 * Support only the state known to OS.
>  	 */
>  	pcntxt_mask = pcntxt_mask & XCNTXT_MASK;
> -	__xsave_init();
> +
> +	xstate_enable(pcntxt_mask);
>  
>  	/*
>  	 * Recompute the context size for enabled features

This one should be __init rather than __cpuinit, right?  As written, I get:


WARNING: vmlinux.o(.cpuinit.text+0x824): Section mismatch in reference
from the function xstate_enable_boot_cpu() to the function
.init.text:__alloc_bootmem()
The function __cpuinit xstate_enable_boot_cpu() references
a function __init __alloc_bootmem().
If __alloc_bootmem is only used by xstate_enable_boot_cpu then
annotate __alloc_bootmem with a matching annotation.

[No need to resend the patch, but if either Suresh or Robert could ACK
this change I'd appreciate it.]


	-hpa
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