From: Dave Hansen <dave.han...@linux.intel.com> We are about to rework all of the "extended state" definitions. This makes the 'ymm' naming consistent with the AVX-512 types we will introduce later.
We also add a convenience type: "reg_128_bit" so that we do not have to spell out our arithmetic. Signed-off-by: Dave Hansen <dave.han...@linux.intel.com> Cc: Ingo Molnar <mi...@redhat.com> Cc: x...@kernel.org Cc: Borislav Petkov <b...@alien8.de> Cc: Fenghua Yu <fenghua...@intel.com> Cc: Tim Chen <tim.c.c...@linux.intel.com> Cc: linux-kernel@vger.kernel.org --- b/arch/x86/include/asm/fpu/types.h | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff -puN arch/x86/include/asm/fpu/types.h~x86-fpu-rework-ymm-types arch/x86/include/asm/fpu/types.h --- a/arch/x86/include/asm/fpu/types.h~x86-fpu-rework-ymm-types 2015-09-02 16:23:51.041462059 -0700 +++ b/arch/x86/include/asm/fpu/types.h 2015-09-02 16:24:20.692808898 -0700 @@ -128,17 +128,23 @@ enum xfeature { #define FIRST_EXTENDED_XFEATURE XFEATURE_YMM +struct reg_128_bit { + u8 regbytes[128/8]; +}; + /* + * State component 2: + * * There are 16x 256-bit AVX registers named YMM0-YMM15. * The low 128 bits are aliased to the 16 SSE registers (XMM0-XMM15) - * and are stored in 'struct fxregs_state::xmm_space[]'. + * and are stored in 'struct fxregs_state::xmm_space[]' in the + * "legacy" area. * - * The high 128 bits are stored here: - * 16x 128 bits == 256 bytes. + * The high 128 bits are stored here. */ struct ymmh_struct { - u8 ymmh_space[256]; -}; + struct reg_128_bit hi_ymm[16]; +} __packed; /* Intel MPX support: */ _ -- 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/