3 Commits

Author	SHA1	Message	Date
Cherry Mui	4f4f1c6fea	Revert "cpu: add HPDS, LOR, PAN detection for arm64" ... This reverts CL 704075. Reason for revert: Based on golang/go#76386, it doesn't seem to work correctly. Fixes golang/go#76386. Change-Id: I51ccbc8715c25c0d061d56dfbf0e8158f1207018 Reviewed-on: https://go-review.googlesource.com/c/sys/+/724160 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Auto-Submit: Cherry Mui <cherryyz@google.com>	2025-11-24 15:42:25 -08:00
Chongyi Zheng	6239615695	cpu: add HPDS, LOR, PAN detection for arm64 ... This CL gets ID_AA64MMFR1_EL1, Memory Model Feature Register 1, and grabs HPDS, LOR, PAN features from its bits. Fixes golang/go#75472. Change-Id: Ic04b109d79aceba9b3b1d3a1ea514fcf132007c5 GitHub-Last-Rev: f938ff468b GitHub-Pull-Request: golang/sys#263 Reviewed-on: https://go-review.googlesource.com/c/sys/+/704075 Reviewed-by: Keith Randall <khr@google.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org>	2025-10-28 09:43:50 -07:00
Tobias Klauser	ef9fd89ba2	cpu: read ARM64 registers using sysctl(3) on netbsd/arm64 ... Use sysctl("machdep.cpu0.cpu_id") to retrieve the ARM64 cpu_id information on netbsd/arm64. This includes the ISAR0, ISAR1 and PFR0 registers which can be parsed using existing functionality. In order to use sysctl(3) without depending on x/sys/unix, some functionality needed to be copied and slightly adjusted. Change-Id: Ic9a133917ae5da516e6794f375bd7602d9bd3aa6 Reviewed-on: https://go-review.googlesource.com/c/sys/+/264378 Trust: Tobias Klauser <tobias.klauser@gmail.com> Trust: Benny Siegert <bsiegert@gmail.com> Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Benny Siegert <bsiegert@gmail.com>	2020-10-24 13:24:49 +00:00