[PATCH 08/11] x86, fpu: add C structures for AVX-512 state components

From: Dave Hansen <dave.hansen@linux.intel.com>

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.hansen@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: x86@kernel.org
Cc: Borislav Petkov <bp@alien8.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: linux-kernel@vger.kernel.org
---

b/arch/x86/include/asm/fpu/types.h | 43 ++++++++++++++++++++++++++++++++++---
1 file changed, 40 insertions(+), 3 deletions(-)

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 2015-08-27 10:08:03.909740783 -0700
+++ b/arch/x86/include/asm/fpu/types.h 2015-08-27 10:08:03.912740919 -0700
@@ -129,6 +129,12 @@ enum xfeature_nr {
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:
@@ -177,6 +183,33 @@ struct mpx_bndcsr_state {
};
} __packed;

+/* AVX-512 Components: */
+
+/*
+ * State component 5 is used for the 8 64-bit opmask registers
+ * k0