Date: Tue, 10 Dec 2013 23:46:47 -0800 From: Rui Paulo <rpaulo@felyko.com> To: Justin Hibbits <chmeeedalf@gmail.com> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: powerpc64 memory translations Message-ID: <09C3ACEA-031F-4447-B9BB-4466F9E67CC7@felyko.com> In-Reply-To: <20131210223546.27d2b45d@zhabar.gateway.2wire.net> References: <20131210223546.27d2b45d@zhabar.gateway.2wire.net>
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On 10 Dec 2013, at 22:35, Justin Hibbits <chmeeedalf@gmail.com> wrote: > I'm trying to fix a problem with DTrace FBT (it just flat hangs), and > want to use the oldest trick in the book -- writing to a known address > at various points. Problem I have, though, is that writing to 0x10 > virtual, unlike with powerpc32, doesn't write to 0x10 physical. Is > there any way to get the mapping for the first page of physical memory, > so I can do this debugging? And to make it always available, so that > I don't have to worry about mapping it when I need to? Wouldn't pmap_mapdev() work? -- Rui Paulo
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