[3.8.y.z extended stable] Patch "x86, AVX-512: AVX-512 Feature Detection" has been added to staging queue

[Yu, Fenghua]

Hi, Kamal,

Except the patch in your email, there is another patch:
https://lkml.org/lkml/2014/2/20/546

Please add this patch as well if not done yet.

Thanks.

-Fenghua

> -----Original Message-----
> From: Kamal Mostafa [mailto:kamal at canonical.com]
> Sent: Thursday, April 17, 2014 4:30 PM
> To: Yu, Fenghua
> Cc: H. Peter Anvin; Kamal Mostafa; kernel-team at lists.ubuntu.com
> Subject: [3.8.y.z extended stable] Patch "x86, AVX-512: AVX-512 Feature
> Detection" has been added to staging queue
> 
> This is a note to let you know that I have just added a patch titled
> 
>     x86, AVX-512: AVX-512 Feature Detection
> 
> to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree
> which can be found at:
> 
> 
> http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads
> /linux-3.8.y-queue
> 
> This patch is scheduled to be released in version 3.8.13.22.
> 
> If you, or anyone else, feels it should not be added to this tree,
> please
> reply to this email.
> 
> For more information about the 3.8.y.z tree, see
> https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
> 
> Thanks.
> -Kamal
> 
> ------
> 
> From 072af6571a063dd603521b6c947cf094b7d347a1 Mon Sep 17 00:00:00 2001
> From: Fenghua Yu <fenghua.yu at intel.com>
> Date: Thu, 20 Feb 2014 13:24:50 -0800
> Subject: x86, AVX-512: AVX-512 Feature Detection
> 
> commit 8e5780fdeef7dc490b3f0b3a62704593721fa4f3 upstream.
> 
> AVX-512 is an extention of AVX2. Its spec can be found at:
> http://download-
> software.intel.com/sites/default/files/managed/71/2e/319433-017.pdf
> 
> This patch detects AVX-512 features by CPUID.
> 
> Signed-off-by: Fenghua Yu <fenghua.yu at intel.com>
> Link: http://lkml.kernel.org/r/1392931491-33237-1-git-send-email-
> fenghua.yu at intel.com
> Signed-off-by: H. Peter Anvin <hpa at linux.intel.com>
> Signed-off-by: Kamal Mostafa <kamal at canonical.com>
> ---
>  arch/x86/include/asm/cpufeature.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/x86/include/asm/cpufeature.h
> b/arch/x86/include/asm/cpufeature.h
> index d3f0db1..0480fb9 100644
> --- a/arch/x86/include/asm/cpufeature.h
> +++ b/arch/x86/include/asm/cpufeature.h
> @@ -211,9 +211,13 @@
>  #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_AVX512F	(9*32+16) /* AVX-512 Foundation */
>  #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 */
> +#define X86_FEATURE_AVX512PF	(9*32+26) /* AVX-512 Prefetch */
> +#define X86_FEATURE_AVX512ER	(9*32+27) /* AVX-512 Exponential and
> Reciprocal */
> +#define X86_FEATURE_AVX512CD	(9*32+28) /* AVX-512 Conflict Detection
> */
> 
>  #if defined(__KERNEL__) && !defined(__ASSEMBLY__)
> 
> --
> 1.9.1