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From: Ed Schouten <ed@nuxi.nl>
Date: Thu, 8 Sep 2016 16:48:45 +0200
Message-ID: <CABh_MKmiEFrbTY+ZMsh2yq8NANcE_ZSYbwL2UV2KFEVRMNoUgw@mail.gmail.com>
Subject: Re: svn commit: r305607 - head/sys/arm64/arm64
To: Andrew Turner <andrew@freebsd.org>
Cc: src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, 
 svn-src-head@freebsd.org
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Hi Andrew,

2016-09-08 14:53 GMT+02:00 Andrew Turner <andrew@freebsd.org>:
>   Trap msr/mrs instructions. These are privileged arm64 instructions and
>   shouldn't normally be used.

It depends on which system register is being used, right? System
registers like TPIDR_EL0 are accessed by userspace all the time.

-- 
Ed Schouten <ed@nuxi.nl>
Nuxi, 's-Hertogenbosch, the Netherlands
KvK-nr.: 62051717