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Author SHA1 Message Date
khr@golang.org e5770d27b7 sys/cpu: use symbolic names for masks 
Masks declarations are copied from internal/cpu. All the 1<<N masks
that have a corresponding named constant are swapped out.

Change-Id: I6cfb053179a16611f4404719d92c182464a67d7f
Reviewed-on: https://go-review.googlesource.com/c/sys/+/731321
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
 2025-12-19 08:52:22 -08:00
khr@golang.org 714a44c845 sys/cpu: modify x86 port to match what internal/cpu does 
The way we call isSet is different in the two. Normalize x/sys
to match internal/cpu.

This was done using (mostly) gopls' quick fix, to ensure we
don't miss any of the transpositions.

Change-Id: I0b66152e194d46ed9299550e12641cc798f8b11b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/731320
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
 2025-12-19 08:52:16 -08:00
Keith Randall 7138967c19 windows: fix slicing of NTUnicodeString values 
We were slicing using a count of bytes, not a count of uint16s.

Fixes golang/go#73460

Change-Id: If0fd19e795078c01fda5b976e3c34af115b25dcc
Reviewed-on: https://go-review.googlesource.com/c/sys/+/667235
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Junyang Shao <shaojunyang@google.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
Auto-Submit: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@google.com>
 2025-04-22 08:26:09 -07:00
Keith Randall 7861aae155 cpu: pretend AVX-512 is disabled on Darwin 
Darwin doesn't save/restore the AVX-512 mask registers when
processing a signal. Go generates lots of signals, which cause
the mask registers to randomly get clobbered. Better to pretend
that AVX-512 isn't supported.

Update golang/go#49233

Change-Id: I0dda77a6f205e10eefccd82e6f4f0f184dae42d9
Reviewed-on: https://go-review.googlesource.com/c/sys/+/361255
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Martin Möhrmann <martin@golang.org>
 2021-11-03 23:57:46 +00:00
Keith Randall 6f8348627a unix: fix darwin pipe implementation 
The raw syscall returned the two pipes whereas the libc call
takes a pointer to a location to write the two pipes.
When we switched over from raw syscalls to libc calls, this
change in behavior was missed.

Fixes golang/go#43498

Change-Id: Icee2204dcb8be8fc94be0df106e1ff061cafa446
Reviewed-on: https://go-review.googlesource.com/c/sys/+/281432
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
 2021-01-04 20:47:34 +00:00