Date: Wed, 03 Feb 2010 12:46:50 -0800 From: Nate Lawson <nate@root.org> To: Andriy Gapon <avg@icyb.net.ua> Cc: freebsd-acpi@FreeBSD.org, Rui Paulo <rpaulo@FreeBSD.org>, John Baldwin <jhb@FreeBSD.org> Subject: Re: acpi_cpu: _PDC vs _OSC Message-ID: <4B69E0BA.4080104@root.org> In-Reply-To: <4B698DD8.4010404@icyb.net.ua> References: <4B698DD8.4010404@icyb.net.ua>
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Andriy Gapon wrote: > What do you think about changing logic of evaluating _PDC and _OSC for Processor > object in acpi_cpu_attach? > It seems that later versions of ACPI standard deprecate _PDC in favor of _OSC. > Although, in practice they seem to be present or not present together, sometimes > _PDC being only a wrappper around _OSC. There are still, of course, systems with > only _PDC present. I assume that there are systems with only _OSC too. > > I would like to change the order, so that _OSC evaluation is attempted first and > only if it fails then proceed with _PDC. > This is fine with me. When I first implemented this stuff, _PDC was barely public and I had to guess at some of the bits. -- Nate
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