Date: Sat, 30 Aug 2014 18:05:08 +0000 From: Alexey Dokuchaev <danfe@FreeBSD.org> To: John Baldwin <jhb@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r270850 - in head/sys: i386/i386 i386/include i386/isa x86/acpica Message-ID: <20140830180508.GA49052@FreeBSD.org> In-Reply-To: <58768837.sIF65g1iXL@ralph.baldwin.cx> References: <201408301748.s7UHmc6H059701@svn.freebsd.org> <58768837.sIF65g1iXL@ralph.baldwin.cx>
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On Sat, Aug 30, 2014 at 01:58:20PM -0400, John Baldwin wrote: > On Saturday, August 30, 2014 05:48:38 PM John Baldwin wrote: > > New Revision: 270850 > > URL: http://svnweb.freebsd.org/changeset/base/270850 > > > > Log: > > Save and restore FPU state across suspend and resume. In earlier > > revisions of this patch, resumectx() called npxresume() directly, but that > > doesn't work because resumectx() runs with a non-standard %cs selector. > > Instead, all of the FPU suspend/resume handling is done in C. > > This mostly fixes suspend and resume in X on a little 32-bit only netbook I > have. I needed an additional patch to the i915 code to prevent it from > tearing down its interrupt handler in suspend and re-establishing it during > resume (this sort of thing is not needed in drivers and isn't safe because > suspend runs pinned to CPU 0 and unregistering an interrupt needs to bind to > the CPU the IDT vector is assigned to). John, thanks for a lot for making more and more laptops sleep-ready, as this will certainly help FreeBSD to be considered as a suitable platform for them. ./danfe
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