From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755336AbbHaWbI (ORCPT ); Mon, 31 Aug 2015 18:31:08 -0400 Received: from mga02.intel.com ([134.134.136.20]:57816 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755340AbbHaWU4 (ORCPT ); Mon, 31 Aug 2015 18:20:56 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,444,1437462000"; d="scan'208";a="794929202" Subject: [PATCH 12/15] x86, fpu: add C structures for AVX-512 state components To: dave@sr71.net Cc: dave.hansen@linux.intel.com, mingo@redhat.com, x86@kernel.org, bp@alien8.de, fenghua.yu@intel.com, tim.c.chen@linux.intel.com, linux-kernel@vger.kernel.org From: Dave Hansen Date: Mon, 31 Aug 2015 15:20:56 -0700 References: <20150831222051.3D1897BF@viggo.jf.intel.com> In-Reply-To: <20150831222051.3D1897BF@viggo.jf.intel.com> Message-Id: <20150831222056.24BCEB5B@viggo.jf.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dave Hansen 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: Ingo Molnar Cc: x86@kernel.org Cc: Borislav Petkov Cc: Fenghua Yu Cc: Tim Chen Cc: linux-kernel@vger.kernel.org --- b/arch/x86/include/asm/fpu/types.h | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff -puN arch/x86/include/asm/fpu/types.h~avx-512-structs arch/x86/include/asm/fpu/types.h --- a/arch/x86/include/asm/fpu/types.h~avx-512-structs 2015-08-31 15:17:36.334970980 -0700 +++ b/arch/x86/include/asm/fpu/types.h 2015-08-31 15:17:36.337971117 -0700 @@ -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; _