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Commit Graph

Author	SHA1	Message	Date
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
Russ Cox	9a76102bfb	all: go fmt ./... Make all our package sources use Go 1.17 gofmt format (adding //go:build lines). Not strictly necessary but will avoid spurious changes as files are edited. Part of //go:build change (#41184). See https://golang.org/design/draft-gobuild Change-Id: I01667f826428426a39c84717d02efa25fa44553c Reviewed-on: https://go-review.googlesource.com/c/sys/+/294490 TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Matt Layher <mdlayher@gmail.com> Trust: Josh Bleecher Snyder <josharian@gmail.com> Trust: Russ Cox <rsc@golang.org> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Russ Cox <rsc@golang.org>	2021-02-20 05:07:31 +00:00
Tobias Klauser	85b82a3add	cpu: support reading arm64 CPU feature registers This allows to detect ARM64 CPU features on non-Linux systems. On Linux, this is used in case /proc/self/auxv cannot be read. Change-Id: I67d55e989f2beda0c05a97ca5e55781840a8e01c Reviewed-on: https://go-review.googlesource.com/c/sys/+/209478 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>	2019-12-04 07:21:56 +00:00

Author

SHA1

Message

Date

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

Russ Cox

9a76102bfb

all: go fmt ./...

Make all our package sources use Go 1.17 gofmt format
(adding //go:build lines).

Not strictly necessary but will avoid spurious changes
as files are edited.

Part of //go:build change (#41184).
See https://golang.org/design/draft-gobuild

Change-Id: I01667f826428426a39c84717d02efa25fa44553c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/294490
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Russ Cox <rsc@golang.org>

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

Tobias Klauser

85b82a3add

cpu: support reading arm64 CPU feature registers

This allows to detect ARM64 CPU features on non-Linux systems. On Linux,
this is used in case /proc/self/auxv cannot be read.

Change-Id: I67d55e989f2beda0c05a97ca5e55781840a8e01c
Reviewed-on: https://go-review.googlesource.com/c/sys/+/209478
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

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

3 Commits