Vaughn Iverson b677753862 cpu: fix AVX512 support detection on Darwin ...

Summary: On darwin/amd64, it is not adequate to use OSXSAVE
bits to determine AVX512 availabilty. The reason is involved.
See github issue for details.

The fix consists of implementing Apple's recommended approach
using the process commpage cpu_capabilities bits to determine
availability of AVX512.

Fixes golang/go#43089

Change-Id: I1ba89965498863d268fbf2e427dbfd6429c7409f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/285572
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Martin Möhrmann <moehrmann@google.com>

2021-05-03 07:37:44 +00:00

..

asm_aix_ppc64.s

cpu: add //go:build lines to assembly files

2021-04-26 21:46:56 +00:00

byteorder.go

cpu: adjust godoc comment for hostByteOrder

2020-06-15 20:00:32 +00:00

cpu_aix.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_arm64.go

cpu: read ARM64 registers using sysctl(3) on netbsd/arm64

2020-10-24 13:24:49 +00:00

cpu_arm64.s

cpu: add //go:build lines to assembly files

2021-04-26 21:46:56 +00:00

cpu_arm.go

cpu: add GODEBUG options to disable use of instruction set extensions

2020-08-05 06:55:43 +00:00

cpu_gc_arm64.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_gc_s390x.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_gc_x86.go

cpu: fix AVX512 support detection on Darwin

2021-05-03 07:37:44 +00:00

cpu_gccgo_arm64.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_gccgo_s390x.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_gccgo_x86.c

cpu: support reading arm64 CPU feature registers

2019-12-04 07:21:56 +00:00

cpu_gccgo_x86.go

cpu: fix AVX512 support detection on Darwin

2021-05-03 07:37:44 +00:00

cpu_linux_arm64.go

cpu: support reading arm64 CPU feature registers

2019-12-04 07:21:56 +00:00

cpu_linux_arm.go

cpu: support ARM feature detection on Linux

2019-09-27 07:32:44 +00:00

cpu_linux_mips64x.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_linux_noinit.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_linux_ppc64x.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_linux_s390x.go

cpu: add support for zos/s390x

2020-10-28 09:49:53 +00:00

cpu_linux.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_mips64x.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_mipsx.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_netbsd_arm64.go

cpu: read ARM64 registers using sysctl(3) on netbsd/arm64

2020-10-24 13:24:49 +00:00

cpu_other_arm64.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_other_arm.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_other_mips64x.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_ppc64x.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_riscv64.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_s390x_test.go

cpu: add support for zos/s390x

2020-10-28 09:49:53 +00:00

cpu_s390x.go

cpu: add support for zos/s390x

2020-10-28 09:49:53 +00:00

cpu_s390x.s

cpu: add //go:build lines to assembly files

2021-04-26 21:46:56 +00:00

cpu_test.go

cpu: add support for zos/s390x

2020-10-28 09:49:53 +00:00

cpu_wasm.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

cpu_x86.go

cpu: fix AVX512 support detection on Darwin

2021-05-03 07:37:44 +00:00

cpu_x86.s

cpu: fix AVX512 support detection on Darwin

2021-05-03 07:37:44 +00:00

cpu_zos_s390x.go

cpu: add support for zos/s390x

2020-10-28 09:49:53 +00:00

cpu_zos.go

cpu: add support for zos/s390x

2020-10-28 09:49:53 +00:00

cpu.go

cpu: add support for detecting AVX-512

2020-09-28 20:51:50 +00:00

hwcap_linux.go

cpu: support reading arm64 CPU feature registers

2019-12-04 07:21:56 +00:00

syscall_aix_gccgo.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00

syscall_aix_ppc64_gc.go

all: go fmt ./...

2021-02-20 05:07:31 +00:00