May 2010 - Darwin-kernel - lists.apple.com

Re: Reading from a pty after slave exited
by Julian Scheid 06 May '10

06 May '10

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=G+HrIdV1vv2/L8Mtj3k+0//gFTlvJ/uDdE4Gvm9JzQk=; b=Wiz2KQ8fsHdGlCq0NWKcF2RJQr4ucvTDRV0PptLboG1Ctjl4QmYZ82znLdYxz19gHr zaIMSsU2FHh2+vy8OHMWLybK4BY32RsNvEzONlcMdK9P/nuQbjZvrtKrS9IWGy9c/rKq gUWRckr6HdeEo2zySWDnKNMBWV52MaHs1pz4o= Domainkey-signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=RmsYmXlKLMJ87noSp/6YDCnmEpXniJeSkMuiMWdkFVig5hJv8Mu6hStMJnqKlx+zTG dZyGbxULOh0nmIvMuStdlmTxv+DDHN0JVHy9KMX3pDCMU57fLn3ZfHaoIgnSfCIcHsfJ Ld6Ivq2UyjIOeYCc0vzn6hJqb3IMmAPx8CBVk= On Tue, Apr 27, 2010 at 9:39 PM, Terry Lambert <tlambert(a)apple.com> wrote: >> Maybe you are referring to the VMIN/VTIME experiments that I mentioned >> a few posts ago? For what it's worth, the reason I applied these to >> the master end was because the only useful explanation of VMIN/VTIME I >> could find so far -- >> http://www.unixwiz.net/techtips/termios-vmin-vtime.html -- makes it >> sound like it is a setting applicable to reading, not writing, and >> since in my example the master is what does the reading, that's where >> I applied it. > > Yes, sorry it wasn't clear. > > The ttread that implements the VMIN/VTIME is only called from l_read through > the linesw line discipline table, which is only called from ptsd_read() > (cloning pty slave side) or ptsread() (non-cloning pty slave side). I see, that makes sense. All sorted now at my end. Thanks for your help and patience, much appreciated. -Julian _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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NKE: Reinjecting data into a socket when it shuts down
by Bogdan Harjoc 06 May '10

06 May '10

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Re: Importance of testing Kexts on differing hardware platforms
by Michael Smith 06 May '10

06 May '10

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Re: Importance of testing Kexts on differing hardware platforms
by Martin Hardman 06 May '10

06 May '10

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: Acrst1KnE+7T89wSTUWOZvxXlg8AFg== Thread-topic: Importance of testing Kexts on differing hardware platforms _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: Importance of testing Kexts on differing hardware platforms
by Luke the Hiesterman 06 May '10

06 May '10

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Importance of testing Kexts on differing hardware platforms
by Martin Hardman 06 May '10

06 May '10

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Thread-index: AcrssfXHl0R8J5jXRjeaxMne70QfZQ== Thread-topic: Importance of testing Kexts on differing hardware platforms _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: kextload failure on 10.5
by Andrew Gallatin 04 May '10

04 May '10

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Thunderbird 2.0.0.23 (X11/20090817) Chris Suter wrote: Exactly—and I can't think of much that isn't available in 10.6 (32 bit) that was available in 10.4. Obviously, it's a bit different for x86_64 but that won't be running pre-10.6 so that's not a problem. The big difference for Ryan and me (10GbE driver authors) was the addition of mbuf_get_tso_requested() in 10.6 to support TSO. This is a critical feature for 10GbE (the difference between 5Gb/s at 100% CPU and 9.4Gb/s at moderate CPU usage) Having it as a separate function rather than as an extension to some extent function like mbuf_get_csum_requested() is frustrating because it makes a driver that wants to support TSO on 10.6 not loadable on 10.5 and 10.4. A question for the kext wizards: Is it possible to ship some kind of plugin that loads only on 10.4 and 10.5 which supplies a dummy mbuf_get_tso_requested() routine? Thanks, Drew _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: kextload failure on 10.5
by Chris Suter 04 May '10

04 May '10

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Ryan, On Tue, May 4, 2010 at 11:44 AM, Ryan Hankins <rqh(a)small-tree.com> wrote: > So, you must be able to glue the two things together with the lipo command > once they've been built against separate SDKs... interesting. Well, that's what happens, but you don't actually need to do it yourself—the build process does it for you (same as for everything else). > In other words, as long as you are supporting only 10.4 APIs (that are still > available on 10.6), you can do this. Exactly—and I can't think of much that isn't available in 10.6 (32 bit) that was available in 10.4. Obviously, it's a bit different for x86_64 but that won't be running pre-10.6 so that's not a problem. Kind regards, Chris _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Re: kextload failure on 10.5
by Ryan Hankins 04 May '10

04 May '10

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 Chris, Thanks -- I stand corrected. Thanks, -Ryan Hi Ryan, On Mon, May 3, 2010 at 11:18 PM, Ryan Hankins<rqh(a)small-tree.com> wrote: No, this is incorrect. You have to do what you say if you want to use the newer features (weak linking was only introduced in 10.6), but if that isn't the case, you can build a single Universal binary (by using the 10.6 SDK for x86_64 and 10.4 SDK for everything else). We do exactly that and it works fine—there’s another post of mine to this list somewhere that describes what I did to make it work. Kind regards, Chris -- Ryan Hankins Software Engineer Small Tree Communications www.small-tree.com rqh(a)small-tree.com +1 651 209-6509 x303 _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… So, you must be able to glue the two things together with the lipo command once they've been built against separate SDKs... interesting. In other words, as long as you are supporting only 10.4 APIs (that are still available on 10.6), you can do this. Basically, you can't build a single universal binary. You have to build separate kexts and either install both of them or else use the PlugIns directory to build it into one "package." See: This email sent to site_archiver(a)lists.apple.com

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Re: kextload failure on 10.5
by Chris Suter 04 May '10

04 May '10

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi Ryan, On Mon, May 3, 2010 at 11:18 PM, Ryan Hankins <rqh(a)small-tree.com> wrote: > Basically, you can't build a single universal binary. You have to build > separate kexts and either install both of them or else use the PlugIns > directory to build it into one "package." See: No, this is incorrect. You have to do what you say if you want to use the newer features (weak linking was only introduced in 10.6), but if that isn't the case, you can build a single Universal binary (by using the 10.6 SDK for x86_64 and 10.4 SDK for everything else). We do exactly that and it works fine—there’s another post of mine to this list somewhere that describes what I did to make it work. Kind regards, Chris _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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