linux-kernel - Re: [PATCH 2/3] X86, mpx: Intel MPX definition

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Date:	Fri, 06 Dec 2013 07:58:17 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...en8.de>, Qiaowei Ren <qiaowei.ren@...el.com>
CC:	Paolo Bonzini <pbonzini@...hat.com>,
	Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
	linux-kernel@...r.kernel.org, qemu-devel@...gnu.org,
	kvm@...r.kernel.org, Xudong Hao <xudong.hao@...el.com>,
	Liu Jinsong <jinsong.liu@...el.com>
Subject: Re: [PATCH 2/3] X86, mpx: Intel MPX definition

No... we always ask for cpufeature.h patches separately because they sometimes cause conflicts between branches.

Borislav Petkov <bp@...en8.de> wrote:
>On Sat, Dec 07, 2013 at 02:52:55AM +0800, Qiaowei Ren wrote:
>> 
>> Signed-off-by: Qiaowei Ren <qiaowei.ren@...el.com>
>> Signed-off-by: Xudong Hao <xudong.hao@...el.com>
>> Signed-off-by: Liu Jinsong <jinsong.liu@...el.com>
>> ---
>>  arch/x86/include/asm/cpufeature.h |    2 ++
>>  1 files changed, 2 insertions(+), 0 deletions(-)
>
>This patch should probably be merged with the next one...
>
>> 
>> diff --git a/arch/x86/include/asm/cpufeature.h
>b/arch/x86/include/asm/cpufeature.h
>> index d3f5c63..6c2738d 100644
>> --- a/arch/x86/include/asm/cpufeature.h
>> +++ b/arch/x86/include/asm/cpufeature.h
>> @@ -216,6 +216,7 @@
>>  #define X86_FEATURE_ERMS	(9*32+ 9) /* Enhanced REP MOVSB/STOSB */
>>  #define X86_FEATURE_INVPCID	(9*32+10) /* Invalidate Processor
>Context ID */
>>  #define X86_FEATURE_RTM		(9*32+11) /* Restricted Transactional
>Memory */
>> +#define X86_FEATURE_MPX		(9*32+14) /* Memory Protection Extension */
>>  #define X86_FEATURE_RDSEED	(9*32+18) /* The RDSEED instruction */
>>  #define X86_FEATURE_ADX		(9*32+19) /* The ADCX and ADOX instructions
>*/
>>  #define X86_FEATURE_SMAP	(9*32+20) /* Supervisor Mode Access
>Prevention */
>> @@ -330,6 +331,7 @@ extern const char * const x86_power_flags[32];
>>  #define cpu_has_perfctr_l2	boot_cpu_has(X86_FEATURE_PERFCTR_L2)
>>  #define cpu_has_cx8		boot_cpu_has(X86_FEATURE_CX8)
>>  #define cpu_has_cx16		boot_cpu_has(X86_FEATURE_CX16)
>> +#define cpu_has_mpx		boot_cpu_has(X86_FEATURE_MPX)
>
>... and we're trying to not have more of those macros so people should
>be simply
>using boot_cpu_has(X86_FEATURE_YYY).

-- 
Sent from my mobile phone.  Please pardon brevity and lack of formatting.
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