Commit-ID: 060dd0f712562925662c65b90d225d82304764f7 Gitweb: http://git.kernel.org/tip/060dd0f712562925662c65b90d225d82304764f7 Author: Dave Hansen <dave.han...@linux.intel.com> AuthorDate: Wed, 2 Sep 2015 16:31:29 -0700 Committer: Ingo Molnar <mi...@kernel.org> 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 <dave.han...@linux.intel.com> Cc: Andy Lutomirski <l...@amacapital.net> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Denys Vlasenko <dvlas...@redhat.com> Cc: Fenghua Yu <fenghua...@intel.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Tim Chen <tim.c.c...@linux.intel.com> Cc: d...@sr71.net Cc: linux-kernel@vger.kernel.org Link: http://lkml.kernel.org/r/20150902233129.f2433...@viggo.jf.intel.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- 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; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
