From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755273AbbINMYi (ORCPT ); Mon, 14 Sep 2015 08:24:38 -0400 Received: from terminus.zytor.com ([198.137.202.10]:35249 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751549AbbINMYg (ORCPT ); Mon, 14 Sep 2015 08:24:36 -0400 Date: Mon, 14 Sep 2015 05:23:36 -0700 From: tip-bot for Dave Hansen Message-ID: Cc: linux-kernel@vger.kernel.org, brgerst@gmail.com, dave.hansen@linux.intel.com, fenghua.yu@intel.com, tglx@linutronix.de, mingo@kernel.org, torvalds@linux-foundation.org, peterz@infradead.org, bp@alien8.de, tim.c.chen@linux.intel.com, dvlasenk@redhat.com, hpa@zytor.com, luto@amacapital.net Reply-To: mingo@kernel.org, torvalds@linux-foundation.org, peterz@infradead.org, bp@alien8.de, tim.c.chen@linux.intel.com, linux-kernel@vger.kernel.org, dave.hansen@linux.intel.com, brgerst@gmail.com, tglx@linutronix.de, fenghua.yu@intel.com, hpa@zytor.com, luto@amacapital.net, dvlasenk@redhat.com In-Reply-To: <20150902233129.F2433B98@viggo.jf.intel.com> References: <20150902233129.F2433B98@viggo.jf.intel.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/fpu] x86/fpu: Add C structures for AVX-512 state components Git-Commit-ID: 060dd0f712562925662c65b90d225d82304764f7 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 060dd0f712562925662c65b90d225d82304764f7 Gitweb: http://git.kernel.org/tip/060dd0f712562925662c65b90d225d82304764f7 Author: Dave Hansen AuthorDate: Wed, 2 Sep 2015 16:31:29 -0700 Committer: Ingo Molnar CommitDate: Mon, 14 Sep 2015 12:22:01 +0200 x86/fpu: Add C structures for AVX-512 state components AVX-512 has 3 separate state components: 1. opmask registers 2. zmm upper half of registers 0-15 3. new zmm registers (16-31) This patch adds C structures for the three components along with a few comments mostly lifted from the SDM to explain what they do. This will allow us to check our structures against what the hardware tells us about the sizes of the components. Signed-off-by: Dave Hansen Cc: Andy Lutomirski Cc: Borislav Petkov Cc: Brian Gerst Cc: Denys Vlasenko Cc: Fenghua Yu Cc: H. Peter Anvin Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Tim Chen Cc: dave@sr71.net Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/20150902233129.F2433B98@viggo.jf.intel.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/fpu/types.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/arch/x86/include/asm/fpu/types.h b/arch/x86/include/asm/fpu/types.h index eb0c9a2..1c6f6ac 100644 --- a/arch/x86/include/asm/fpu/types.h +++ b/arch/x86/include/asm/fpu/types.h @@ -131,6 +131,12 @@ enum xfeature { struct reg_128_bit { u8 regbytes[128/8]; }; +struct reg_256_bit { + u8 regbytes[256/8]; +}; +struct reg_512_bit { + u8 regbytes[512/8]; +}; /* * State component 2: @@ -179,6 +185,33 @@ struct mpx_bndcsr_state { }; } __packed; +/* AVX-512 Components: */ + +/* + * State component 5 is used for the 8 64-bit opmask registers + * k0-k7 (opmask state). + */ +struct avx_512_opmask_state { + u64 opmask_reg[8]; +} __packed; + +/* + * State component 6 is used for the upper 256 bits of the + * registers ZMM0-ZMM15. These 16 256-bit values are denoted + * ZMM0_H-ZMM15_H (ZMM_Hi256 state). + */ +struct avx_512_zmm_uppers_state { + struct reg_256_bit zmm_upper[16]; +} __packed; + +/* + * State component 7 is used for the 16 512-bit registers + * ZMM16-ZMM31 (Hi16_ZMM state). + */ +struct avx_512_hi16_state { + struct reg_512_bit hi16_zmm[16]; +} __packed; + struct xstate_header { u64 xfeatures; u64 xcomp_bv;