 Home |
Products |
Support |
Community |
News |
xen-devel
Re: [Xen-devel] Re: how to handle paged hypercall args?
| To: | Olaf Hering <olaf@xxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Re: how to handle paged hypercall args? |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Fri, 03 Dec 2010 06:18:30 -0800 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Fri, 03 Dec 2010 06:20:28 -0800 |
| Dkim-signature: | v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:sender:user-agent:date :subject:from:to:cc:message-id:thread-topic:thread-index:in-reply-to :mime-version:content-type:content-transfer-encoding; bh=1mLjmJqVtsBm3JOVqK8BuxRyuhlLLwvEOT7LWijHL4c=; b=RBiWy03LCwEDkZVSpAlaur+Qre1xaLk8UEfEpjPZ25SNFRUuLIvkWRwSl1CjtXFO7q 67wedIfWdTg2TdI9WptlLrPi93fF8NSN2U/HDykDS4XfUDXpyTxSb0zIGfROKO/o8p6Z BxkQQGIatPeK/r9svPo9X0VxtQ0yD2GnmdCn4= |
| Domainkey-signature: | a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:user-agent:date:subject:from:to:cc:message-id:thread-topic :thread-index:in-reply-to:mime-version:content-type :content-transfer-encoding; b=jtUfwC3nawTwHDkqJYXpsEb7DdOihBSTnfCZWewQrXBxZPQ1IVsJNsa+2gPLEVosd5 La0LFcIsvZuDSoF6QmUh/9C7k/wuUs62hdKAaGLZUO5rdc6V5q8Nu/L6pFxLwzRkzHbj 25aCZmKIoYd/BbttnBNK4TZ2tl+aJqXv9XOTQ= |
| Envelope-to: | www-data@xxxxxxxxxxxxxxxxxxx |
| In-reply-to: | <20101203090629.GB6055@xxxxxxxxx> |
| List-help: | <mailto:xen-devel-request@lists.xensource.com?subject=help> |
| List-id: | Xen developer discussion <xen-devel.lists.xensource.com> |
| List-post: | <mailto:xen-devel@lists.xensource.com> |
| List-subscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe> |
| List-unsubscribe: | <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe> |
| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
| Thread-index: | AcuS9PWUuSdzUYbKhEmSyO3PF1tq7w== |
| Thread-topic: | [Xen-devel] Re: how to handle paged hypercall args? |
| User-agent: | Microsoft-Entourage/12.23.0.091001 |
On 03/12/2010 01:06, "Olaf Hering" <olaf@xxxxxxxxx> wrote: >> I didn't look in detail whether that's being done in a non-intuitive >> way elsewhere, but I can't see how the event you're waiting on >> would ever get signaled - wouldn't you need to pass it into >> __hvm_copy() and further down from there? > > I was relying on the kind-of wakeup in p2m_mem_paging_resume(). > > There will be a new patch shortly. vcpu_pause() is nestable and counted. So the vcpu_unpause() on MEM_EVENT_FLAG_VCPU_PAUSED will not be enough to wake up a vcpu that is also paused on a waitqueue. Once the vcou is a sleep on a waitqueue it definitely needs wake_up() to wake it. Of course, p2m_mem_paging_resume() is quite likely the right place to put the wake_up() call. But you do need it in addition to the unpause on the MEM_EVENT flag. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | Re: [Xen-devel] Re: how to handle paged hypercall args?, Keir Fraser |
|---|---|
| Next by Date: | Re: [Xen-devel] Re: how to handle paged hypercall args?, Keir Fraser |
| Previous by Thread: | Re: [Xen-devel] Re: how to handle paged hypercall args?, Olaf Hering |
| Next by Thread: | Re: [Xen-devel] Re: how to handle paged hypercall args?, Olaf Hering |
| Indexes: | [Date] [Thread] [Top] [All Lists] |
