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Date: Tue, 13 Feb 2007 17:56:42 +0100 From: Ingo Molnar <mingo@...e.hu> To: Benjamin LaHaise <bcrl@...ck.org> Cc: Alan <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org, Linus Torvalds <torvalds@...ux-foundation.org>, Arjan van de Ven <arjan@...radead.org>, Christoph Hellwig <hch@...radead.org>, Andrew Morton <akpm@....com.au>, Ulrich Drepper <drepper@...hat.com>, Zach Brown <zach.brown@...cle.com>, Evgeniy Polyakov <johnpol@....mipt.ru>, "David S. Miller" <davem@...emloft.net>, Suparna Bhattacharya <suparna@...ibm.com>, Davide Libenzi <davidel@...ilserver.org>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: [patch 00/11] ANNOUNCE: "Syslets", generic asynchronous system call support * Benjamin LaHaise <bcrl@...ck.org> wrote: > > > Open issues: > > > > Let me add some more > > Also: FPU state (especially important with the FPU and SSE memory copy > variants), segment register bases on x86-64, interaction with > set_fs()... agreed - i'll fix this. But i can see no big conceptual issue here - these resources are all attached to the user context, and that doesnt change upon an 'async context-switch'. So it's "only" a matter of properly separating the user execution context from the kernel execution context. The hardest bit was getting the ptregs details right - the FPU/SSE state is pretty much async already (in the hardware too) and isnt even touched by any of these codepaths. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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