Date: Thu, 8 Sep 2016 21:17:51 +0200 From: Ed Schouten <ed@nuxi.nl> To: Andrew Turner <andrew@fubar.geek.nz> Cc: src-committers <src-committers@freebsd.org>, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r305607 - head/sys/arm64/arm64 Message-ID: <CABh_MKntVBpi8DyHc0%2Bop4UVE27idAeAQcPp13XYEC2GWowxjA@mail.gmail.com> In-Reply-To: <20160908160516.4bfe3045@zapp> References: <201609081253.u88Cr18b036987@repo.freebsd.org> <CABh_MKmiEFrbTY%2BZMsh2yq8NANcE_ZSYbwL2UV2KFEVRMNoUgw@mail.gmail.com> <20160908160516.4bfe3045@zapp>
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2016-09-08 17:05 GMT+02:00 Andrew Turner <andrew@fubar.geek.nz>: > On Thu, 8 Sep 2016 16:48:45 +0200 > Ed Schouten <ed@nuxi.nl> wrote: >> It depends on which system register is being used, right? System >> registers like TPIDR_EL0 are accessed by userspace all the time. > > Correct, the trap is only hit when userspace doesn't have permission to > access the register. Got it. Thanks for clarifying! -- Ed Schouten <ed@nuxi.nl> Nuxi, 's-Hertogenbosch, the Netherlands KvK-nr.: 62051717
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