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From: Keir Fraser <keir@xensource.com>
To: Steve Ofsthun <sofsthun@virtualiron.com>
Cc: xen-devel@lists.xensource.com, Ben Guthro <bguthro@virtualiron.com>
Subject: Re: [PATCH] [HVM] Prevent usb driver crashes in Windows
Date: Wed, 06 Jun 2007 19:22:45 +0100	[thread overview]
Message-ID: <C28CBA05.10324%keir@xensource.com> (raw)
In-Reply-To: <4666E8F1.4020000@virtualiron.com>

On 6/6/07 18:03, "Steve Ofsthun" <sofsthun@virtualiron.com> wrote:

>> What precisely is the race? Qemu-dm is single threaded. Memcpy() probably
>> ends up doing int copies anyway if things are appropriately aligned
>> (although we might not want to rely on that).
> 
> The race is between a domU guest cpu running guest driver code and a dom0
> cpu running the timer based USB emulation code in QEMU.

I see. Thanks!

 -- Keir

      reply	other threads:[~2007-06-06 18:22 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-05-31 23:04 [RFC][PATCH 1/6] HVM PCI Passthrough (non-IOMMU) Guy Zana
2007-06-04 18:25 ` Muli Ben-Yehuda
2007-06-04 21:43   ` Guy Zana
2007-06-05  6:37     ` Muli Ben-Yehuda
2007-06-06 16:00 ` [PATCH] [HVM] Prevent usb driver crashes in Windows Ben Guthro
2007-06-06 16:05   ` [PATCH] Fix vnc port offset in xenstore Ben Guthro
2007-06-06 16:08     ` [PATCH] [HVM] Fix 64 bit PV-on-HVM driver builds Ben Guthro
2007-06-06 16:12       ` [PATCH] [HVM] Allow mkbuildtree to override XEN and XL Ben Guthro
2007-06-06 16:17       ` [PATCH] [HVM] Fix 64 bit PV-on-HVM driver builds Jan Beulich
2007-06-06 16:26         ` [PATCH] [QEMU] remove .depend file on clean build Ben Guthro
2007-06-06 16:38       ` [PATCH] [HVM] Fix 64 bit PV-on-HVM driver builds Keir Fraser
2007-06-06 18:42         ` Dave Lively
2007-06-06 18:57           ` Keir Fraser
2007-06-06 19:20             ` David Lively
2007-06-06 16:40   ` [PATCH] [HVM] Prevent usb driver crashes in Windows Keir Fraser
2007-06-06 17:03     ` Steve Ofsthun
2007-06-06 18:22       ` Keir Fraser [this message]

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