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linux/lib/raid/raid6/x86/avx512.c
Christoph Hellwig 30bf04bd13 raid6: update top of file comments 
Drop the pointless mention of the file name, and use standard formatting
for the top of file comments.

Link: https://lore.kernel.org/20260518051804.462141-14-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Ard Biesheuvel <ardb@kernel.org> # kunit only on arm64
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Mason <clm@fb.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Li Nan <linan122@huawei.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Song Liu <song@kernel.org>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-05-28 21:24:55 -07:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2016 Intel Corporation
*
* Author: Gayatri Kammela <gayatri.kammela@intel.com>
* Author: Megha Dey <megha.dey@linux.intel.com>
*
* Based on avx2.c: Copyright 2012 Yuanhan Liu All Rights Reserved
* Based on sse2.c: Copyright 2002 H. Peter Anvin - All Rights Reserved
*
* AVX512 implementation of RAID-6 syndrome functions
*/
#include <asm/cpufeature.h>
#include <asm/fpu/api.h>
#include "algos.h"
static const struct raid6_avx512_constants {
u64 x1d[8];
} raid6_avx512_constants __aligned(512/8) = {
{ 0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,
0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,
0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,
0x1d1d1d1d1d1d1d1dULL, 0x1d1d1d1d1d1d1d1dULL,},
};
static void raid6_avx5121_gen_syndrome(int disks, size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = disks - 3; /* Highest data disk */
p = dptr[z0+1]; /* XOR parity */
q = dptr[z0+2]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0\n\t"
"vpxorq %%zmm1,%%zmm1,%%zmm1" /* Zero temp */
:
: "m" (raid6_avx512_constants.x1d[0]));
for (d = 0; d < bytes; d += 64) {
asm volatile("prefetchnta %0\n\t"
"vmovdqa64 %0,%%zmm2\n\t" /* P[0] */
"prefetchnta %1\n\t"
"vmovdqa64 %%zmm2,%%zmm4\n\t" /* Q[0] */
"vmovdqa64 %1,%%zmm6"
:
: "m" (dptr[z0][d]), "m" (dptr[z0-1][d]));
for (z = z0-2; z >= 0; z--) {
asm volatile("prefetchnta %0\n\t"
"vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm6,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm4,%%zmm4\n\t"
"vmovdqa64 %0,%%zmm6"
:
: "m" (dptr[z][d]));
}
asm volatile("vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm6,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm4,%%zmm4\n\t"
"vmovntdq %%zmm2,%0\n\t"
"vpxorq %%zmm2,%%zmm2,%%zmm2\n\t"
"vmovntdq %%zmm4,%1\n\t"
"vpxorq %%zmm4,%%zmm4,%%zmm4"
:
: "m" (p[d]), "m" (q[d]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
static void raid6_avx5121_xor_syndrome(int disks, int start, int stop,
size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = stop; /* P/Q right side optimization */
p = dptr[disks-2]; /* XOR parity */
q = dptr[disks-1]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0"
: : "m" (raid6_avx512_constants.x1d[0]));
for (d = 0 ; d < bytes ; d += 64) {
asm volatile("vmovdqa64 %0,%%zmm4\n\t"
"vmovdqa64 %1,%%zmm2\n\t"
"vpxorq %%zmm4,%%zmm2,%%zmm2"
:
: "m" (dptr[z0][d]), "m" (p[d]));
/* P/Q data pages */
for (z = z0-1 ; z >= start ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4"
:
: "m" (dptr[z][d]));
}
/* P/Q left side optimization */
for (z = start-1 ; z >= 0 ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4"
:
: );
}
asm volatile("vpxorq %0,%%zmm4,%%zmm4\n\t"
/* Don't use movntdq for r/w memory area < cache line */
"vmovdqa64 %%zmm4,%0\n\t"
"vmovdqa64 %%zmm2,%1"
:
: "m" (q[d]), "m" (p[d]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
const struct raid6_calls raid6_avx512x1 = {
.gen_syndrome = raid6_avx5121_gen_syndrome,
.xor_syndrome = raid6_avx5121_xor_syndrome,
.name = "avx512x1",
};
/*
* Unrolled-by-2 AVX512 implementation
*/
static void raid6_avx5122_gen_syndrome(int disks, size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = disks - 3; /* Highest data disk */
p = dptr[z0+1]; /* XOR parity */
q = dptr[z0+2]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0\n\t"
"vpxorq %%zmm1,%%zmm1,%%zmm1" /* Zero temp */
:
: "m" (raid6_avx512_constants.x1d[0]));
/* We uniformly assume a single prefetch covers at least 64 bytes */
for (d = 0; d < bytes; d += 128) {
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
"vmovdqa64 %0,%%zmm2\n\t" /* P[0] */
"vmovdqa64 %1,%%zmm3\n\t" /* P[1] */
"vmovdqa64 %%zmm2,%%zmm4\n\t" /* Q[0] */
"vmovdqa64 %%zmm3,%%zmm6" /* Q[1] */
:
: "m" (dptr[z0][d]), "m" (dptr[z0][d+64]));
for (z = z0-1; z >= 0; z--) {
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
"vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm1,%%k2\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]));
}
asm volatile("vmovntdq %%zmm2,%0\n\t"
"vmovntdq %%zmm3,%1\n\t"
"vmovntdq %%zmm4,%2\n\t"
"vmovntdq %%zmm6,%3"
:
: "m" (p[d]), "m" (p[d+64]), "m" (q[d]),
"m" (q[d+64]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
static void raid6_avx5122_xor_syndrome(int disks, int start, int stop,
size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = stop; /* P/Q right side optimization */
p = dptr[disks-2]; /* XOR parity */
q = dptr[disks-1]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0"
: : "m" (raid6_avx512_constants.x1d[0]));
for (d = 0 ; d < bytes ; d += 128) {
asm volatile("vmovdqa64 %0,%%zmm4\n\t"
"vmovdqa64 %1,%%zmm6\n\t"
"vmovdqa64 %2,%%zmm2\n\t"
"vmovdqa64 %3,%%zmm3\n\t"
"vpxorq %%zmm4,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm3,%%zmm3"
:
: "m" (dptr[z0][d]), "m" (dptr[z0][d+64]),
"m" (p[d]), "m" (p[d+64]));
/* P/Q data pages */
for (z = z0-1 ; z >= start ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]));
}
/* P/Q left side optimization */
for (z = start-1 ; z >= 0 ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6"
:
: );
}
asm volatile("vpxorq %0,%%zmm4,%%zmm4\n\t"
"vpxorq %1,%%zmm6,%%zmm6\n\t"
/* Don't use movntdq for r/w
* memory area < cache line
*/
"vmovdqa64 %%zmm4,%0\n\t"
"vmovdqa64 %%zmm6,%1\n\t"
"vmovdqa64 %%zmm2,%2\n\t"
"vmovdqa64 %%zmm3,%3"
:
: "m" (q[d]), "m" (q[d+64]), "m" (p[d]),
"m" (p[d+64]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
const struct raid6_calls raid6_avx512x2 = {
.gen_syndrome = raid6_avx5122_gen_syndrome,
.xor_syndrome = raid6_avx5122_xor_syndrome,
.name = "avx512x2",
};
#ifdef CONFIG_X86_64
/*
* Unrolled-by-4 AVX2 implementation
*/
static void raid6_avx5124_gen_syndrome(int disks, size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = disks - 3; /* Highest data disk */
p = dptr[z0+1]; /* XOR parity */
q = dptr[z0+2]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0\n\t"
"vpxorq %%zmm1,%%zmm1,%%zmm1\n\t" /* Zero temp */
"vpxorq %%zmm2,%%zmm2,%%zmm2\n\t" /* P[0] */
"vpxorq %%zmm3,%%zmm3,%%zmm3\n\t" /* P[1] */
"vpxorq %%zmm4,%%zmm4,%%zmm4\n\t" /* Q[0] */
"vpxorq %%zmm6,%%zmm6,%%zmm6\n\t" /* Q[1] */
"vpxorq %%zmm10,%%zmm10,%%zmm10\n\t" /* P[2] */
"vpxorq %%zmm11,%%zmm11,%%zmm11\n\t" /* P[3] */
"vpxorq %%zmm12,%%zmm12,%%zmm12\n\t" /* Q[2] */
"vpxorq %%zmm14,%%zmm14,%%zmm14" /* Q[3] */
:
: "m" (raid6_avx512_constants.x1d[0]));
for (d = 0; d < bytes; d += 256) {
for (z = z0; z >= 0; z--) {
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
"prefetchnta %2\n\t"
"prefetchnta %3\n\t"
"vpcmpgtb %%zmm4,%%zmm1,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm1,%%k2\n\t"
"vpcmpgtb %%zmm12,%%zmm1,%%k3\n\t"
"vpcmpgtb %%zmm14,%%zmm1,%%k4\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpmovm2b %%k3,%%zmm13\n\t"
"vpmovm2b %%k4,%%zmm15\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpaddb %%zmm12,%%zmm12,%%zmm12\n\t"
"vpaddb %%zmm14,%%zmm14,%%zmm14\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpandq %%zmm0,%%zmm13,%%zmm13\n\t"
"vpandq %%zmm0,%%zmm15,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vmovdqa64 %2,%%zmm13\n\t"
"vmovdqa64 %3,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm13,%%zmm10,%%zmm10\n\t"
"vpxorq %%zmm15,%%zmm11,%%zmm11\n"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]),
"m" (dptr[z][d+128]), "m" (dptr[z][d+192]));
}
asm volatile("vmovntdq %%zmm2,%0\n\t"
"vpxorq %%zmm2,%%zmm2,%%zmm2\n\t"
"vmovntdq %%zmm3,%1\n\t"
"vpxorq %%zmm3,%%zmm3,%%zmm3\n\t"
"vmovntdq %%zmm10,%2\n\t"
"vpxorq %%zmm10,%%zmm10,%%zmm10\n\t"
"vmovntdq %%zmm11,%3\n\t"
"vpxorq %%zmm11,%%zmm11,%%zmm11\n\t"
"vmovntdq %%zmm4,%4\n\t"
"vpxorq %%zmm4,%%zmm4,%%zmm4\n\t"
"vmovntdq %%zmm6,%5\n\t"
"vpxorq %%zmm6,%%zmm6,%%zmm6\n\t"
"vmovntdq %%zmm12,%6\n\t"
"vpxorq %%zmm12,%%zmm12,%%zmm12\n\t"
"vmovntdq %%zmm14,%7\n\t"
"vpxorq %%zmm14,%%zmm14,%%zmm14"
:
: "m" (p[d]), "m" (p[d+64]), "m" (p[d+128]),
"m" (p[d+192]), "m" (q[d]), "m" (q[d+64]),
"m" (q[d+128]), "m" (q[d+192]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
static void raid6_avx5124_xor_syndrome(int disks, int start, int stop,
size_t bytes, void **ptrs)
{
u8 **dptr = (u8 **)ptrs;
u8 *p, *q;
int d, z, z0;
z0 = stop; /* P/Q right side optimization */
p = dptr[disks-2]; /* XOR parity */
q = dptr[disks-1]; /* RS syndrome */
kernel_fpu_begin();
asm volatile("vmovdqa64 %0,%%zmm0"
:: "m" (raid6_avx512_constants.x1d[0]));
for (d = 0 ; d < bytes ; d += 256) {
asm volatile("vmovdqa64 %0,%%zmm4\n\t"
"vmovdqa64 %1,%%zmm6\n\t"
"vmovdqa64 %2,%%zmm12\n\t"
"vmovdqa64 %3,%%zmm14\n\t"
"vmovdqa64 %4,%%zmm2\n\t"
"vmovdqa64 %5,%%zmm3\n\t"
"vmovdqa64 %6,%%zmm10\n\t"
"vmovdqa64 %7,%%zmm11\n\t"
"vpxorq %%zmm4,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm6,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm12,%%zmm10,%%zmm10\n\t"
"vpxorq %%zmm14,%%zmm11,%%zmm11"
:
: "m" (dptr[z0][d]), "m" (dptr[z0][d+64]),
"m" (dptr[z0][d+128]), "m" (dptr[z0][d+192]),
"m" (p[d]), "m" (p[d+64]), "m" (p[d+128]),
"m" (p[d+192]));
/* P/Q data pages */
for (z = z0-1 ; z >= start ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm13,%%zmm13,%%zmm13\n\t"
"vpxorq %%zmm15,%%zmm15,%%zmm15\n\t"
"prefetchnta %0\n\t"
"prefetchnta %2\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpcmpgtb %%zmm12,%%zmm13,%%k3\n\t"
"vpcmpgtb %%zmm14,%%zmm15,%%k4\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpmovm2b %%k3,%%zmm13\n\t"
"vpmovm2b %%k4,%%zmm15\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpaddb %%zmm12,%%zmm12,%%zmm12\n\t"
"vpaddb %%Zmm14,%%zmm14,%%zmm14\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpandq %%zmm0,%%zmm13,%%zmm13\n\t"
"vpandq %%zmm0,%%zmm15,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14\n\t"
"vmovdqa64 %0,%%zmm5\n\t"
"vmovdqa64 %1,%%zmm7\n\t"
"vmovdqa64 %2,%%zmm13\n\t"
"vmovdqa64 %3,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm2,%%zmm2\n\t"
"vpxorq %%zmm7,%%zmm3,%%zmm3\n\t"
"vpxorq %%zmm13,%%zmm10,%%zmm10\n\t"
"vpxorq %%zmm15,%%zmm11,%%zmm11\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14"
:
: "m" (dptr[z][d]), "m" (dptr[z][d+64]),
"m" (dptr[z][d+128]),
"m" (dptr[z][d+192]));
}
asm volatile("prefetchnta %0\n\t"
"prefetchnta %1\n\t"
:
: "m" (q[d]), "m" (q[d+128]));
/* P/Q left side optimization */
for (z = start-1 ; z >= 0 ; z--) {
asm volatile("vpxorq %%zmm5,%%zmm5,%%zmm5\n\t"
"vpxorq %%zmm7,%%zmm7,%%zmm7\n\t"
"vpxorq %%zmm13,%%zmm13,%%zmm13\n\t"
"vpxorq %%zmm15,%%zmm15,%%zmm15\n\t"
"vpcmpgtb %%zmm4,%%zmm5,%%k1\n\t"
"vpcmpgtb %%zmm6,%%zmm7,%%k2\n\t"
"vpcmpgtb %%zmm12,%%zmm13,%%k3\n\t"
"vpcmpgtb %%zmm14,%%zmm15,%%k4\n\t"
"vpmovm2b %%k1,%%zmm5\n\t"
"vpmovm2b %%k2,%%zmm7\n\t"
"vpmovm2b %%k3,%%zmm13\n\t"
"vpmovm2b %%k4,%%zmm15\n\t"
"vpaddb %%zmm4,%%zmm4,%%zmm4\n\t"
"vpaddb %%zmm6,%%zmm6,%%zmm6\n\t"
"vpaddb %%zmm12,%%zmm12,%%zmm12\n\t"
"vpaddb %%zmm14,%%zmm14,%%zmm14\n\t"
"vpandq %%zmm0,%%zmm5,%%zmm5\n\t"
"vpandq %%zmm0,%%zmm7,%%zmm7\n\t"
"vpandq %%zmm0,%%zmm13,%%zmm13\n\t"
"vpandq %%zmm0,%%zmm15,%%zmm15\n\t"
"vpxorq %%zmm5,%%zmm4,%%zmm4\n\t"
"vpxorq %%zmm7,%%zmm6,%%zmm6\n\t"
"vpxorq %%zmm13,%%zmm12,%%zmm12\n\t"
"vpxorq %%zmm15,%%zmm14,%%zmm14"
:
: );
}
asm volatile("vmovntdq %%zmm2,%0\n\t"
"vmovntdq %%zmm3,%1\n\t"
"vmovntdq %%zmm10,%2\n\t"
"vmovntdq %%zmm11,%3\n\t"
"vpxorq %4,%%zmm4,%%zmm4\n\t"
"vpxorq %5,%%zmm6,%%zmm6\n\t"
"vpxorq %6,%%zmm12,%%zmm12\n\t"
"vpxorq %7,%%zmm14,%%zmm14\n\t"
"vmovntdq %%zmm4,%4\n\t"
"vmovntdq %%zmm6,%5\n\t"
"vmovntdq %%zmm12,%6\n\t"
"vmovntdq %%zmm14,%7"
:
: "m" (p[d]), "m" (p[d+64]), "m" (p[d+128]),
"m" (p[d+192]), "m" (q[d]), "m" (q[d+64]),
"m" (q[d+128]), "m" (q[d+192]));
}
asm volatile("sfence" : : : "memory");
kernel_fpu_end();
}
const struct raid6_calls raid6_avx512x4 = {
.gen_syndrome = raid6_avx5124_gen_syndrome,
.xor_syndrome = raid6_avx5124_xor_syndrome,
.name = "avx512x4",
};
#endif
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