linux-kernel - Re: [tip:x86/cpu] x86/cpufeature: Fix build bug caused by merge artifact with the removal of cpu_has

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Date:	Fri, 1 Apr 2016 09:51:04 +0200
From:	Borislav Petkov <bp@...e.de>
To:	mingo@...nel.org, linux-kernel@...r.kernel.org, hpa@...or.com,
	david.kershner@...sys.com, peterz@...radead.org,
	fengguang.wu@...el.com, torvalds@...ux-foundation.org,
	tglx@...utronix.de
Cc:	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/cpu] x86/cpufeature: Fix build bug caused by merge
 artifact with the removal of cpu_has_hypervisor

On Fri, Apr 01, 2016 at 12:40:27AM -0700, tip-bot for Ingo Molnar wrote:
> Commit-ID:  d7847a7017b2a2759dd5590c0cffdbdf2994918e
> Gitweb:     http://git.kernel.org/tip/d7847a7017b2a2759dd5590c0cffdbdf2994918e
> Author:     Ingo Molnar <mingo@...nel.org>
> AuthorDate: Fri, 1 Apr 2016 09:00:35 +0200
> Committer:  Ingo Molnar <mingo@...nel.org>
> CommitDate: Fri, 1 Apr 2016 09:03:27 +0200
> 
> x86/cpufeature: Fix build bug caused by merge artifact with the removal of cpu_has_hypervisor
> 
> The 0-day build robot by Fengguang Wu reported a build failure:
> 
>    arch/x86/events//intel/cstate.c: In function 'cstate_pmu_init':
>    arch/x86/events//intel/cstate.c:680:6: error: 'cpu_has_hypervisor' undeclared (first use in this function)
> 
> ... which was caused by a merge mistake I made when applying
> the following patch:
> 
>   0c9f3536cc71 ("x86/cpufeature: Remove cpu_has_hypervisor")
> 
> apply the missing hunk as well.
> 
> Reported-by: kbuild test robot <fengguang.wu@...el.com>
> Cc: David Kershner <david.kershner@...sys.com>
> Cc: Borislav Petkov <bp@...e.de>
> Cc: Linus Torvalds <torvalds@...ux-foundation.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: sparmaintainer@...sys.com
> Cc: virtualization@...ts.linux-foundation.org
> Link: http://lkml.kernel.org/r/1459266123-21878-3-git-send-email-bp@alien8.de
> Signed-off-by: Ingo Molnar <mingo@...nel.org>
> ---
>  arch/x86/events/intel/cstate.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/x86/events/intel/cstate.c b/arch/x86/events/intel/cstate.c
> index 7946c42..d5045c8 100644
> --- a/arch/x86/events/intel/cstate.c
> +++ b/arch/x86/events/intel/cstate.c
> @@ -677,7 +677,7 @@ static int __init cstate_pmu_init(void)
>  {
>  	int err;
>  
> -	if (cpu_has_hypervisor)
> +	if (boot_cpu_has(X86_FEATURE_HYPERVISOR))
>  		return -ENODEV;
>  
>  	err = cstate_init();

Acked-by: Borislav Petkov <bp@...e.de>

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--