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Re: Ping: [Xen-devel] netback data access synchronization question
| To: | Jan Beulich <JBeulich@xxxxxxxxxx> |
|---|---|
| Subject: | Re: Ping: [Xen-devel] netback data access synchronization question |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Tue, 02 Feb 2010 13:28:25 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Tue, 02 Feb 2010 05:28:45 -0800 |
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| Thread-topic: | Ping: [Xen-devel] netback data access synchronization question |
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It's a long time since I was in that code! K. On 02/02/2010 10:46, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote: > Keir, > > in the absence of anyone else responding, I would have hoped to at > least get your opinion, as it was apparently your patch that added the > consumer side of the code in question. > > Thanks, Jan > >>>> "Jan Beulich" <JBeulich@xxxxxxxxxx> 22.01.10 14:07 >>> > With netbk_gop_frag() (called in the context of net_rx_action()) > consuming data (pending_tx_info[]) invalidated in net_tx_action_dealloc() > (called from net_tx_action()), how is it guaranteed that the grant ref > used will remain valid until the hypervisor gets to validate the arguments > to GNTTABOP_copy? > > Thanks, Jan > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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