Port-arm archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: LSE Atomics

To: Tobias Nygren <tnn%NetBSD.org@localhost>
Subject: Re: LSE Atomics
From: Martin Husemann <martin%duskware.de@localhost>
Date: Thu, 7 May 2020 05:59:49 +0200

On Thu, May 07, 2020 at 01:13:21AM +0200, Tobias Nygren wrote:
> Fetch sysctl machdep.cpu0.cpu_id (see usr.sbin/cpuctl/arch/aarch64.c)
> Then test the ID_AA64ISAR0_EL1 register bits 23:20 for the value 0b0010.

That doesn't sound safe (what if cpu0 and cpu$N disagree?)

Martin

Follow-Ups:
- Re: LSE Atomics
  - From: Robert Swindells
- Re: LSE Atomics
  - From: Kamil Rytarowski

References:
- LSE Atomics
  - From: Kamil Rytarowski
- Re: LSE Atomics
  - From: Tobias Nygren

Prev by Date: Re: LSE Atomics
Next by Date: Re: LSE Atomics
Previous by Thread: Re: LSE Atomics
Next by Thread: Re: LSE Atomics
Indexes:

Home | Main Index | Thread Index | Old Index