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Date: Thu, 21 Jan 2010 19:32:59 +0200 From: "Michael S. Tsirkin" <mst@...hat.com> To: Avi Kivity <avi@...hat.com> Cc: Davide Libenzi <davidel@...ilserver.org>, mtosatti@...hat.com, kvm@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCHv2 1/3] eventfd: allow atomic read and waitqueue remove On Thu, Jan 21, 2010 at 07:33:02PM +0200, Avi Kivity wrote: > On 01/21/2010 07:23 PM, Michael S. Tsirkin wrote: >> >>> I agree. >>> >>> But I think we can solve this in another way in .32: we can clear the >>> eventfd from irqfd->inject work, which is in process context. The new >>> stuff is only needed for lockless clearing, no? >>> >> No, AFAIK there's no way to clear the counter from kernel without >> this patch. >> > > Can't you read from the file? IMO no, the read could block. > -- > Do not meddle in the internals of kernels, for they are subtle and quick to panic. -- 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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