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From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: QEMU PIC indirection patch for in-kernel APIC work
Date: Wed, 04 Apr 2007 19:05:37 +0300	[thread overview]
Message-ID: <4613CCD1.2070702@qumranet.com> (raw)
In-Reply-To: <4613C9EE.5030600-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>

Anthony Liguori wrote:
>
>>
>> This pushes towards in kernel apic too. Can't see how we avoid it.
>>   
>
> Does it really?  IIUC, we would avoid TPR traps entirely and would 
> just need to synchronize the TPR whenever we go down to userspace.
>

It's a bit more complex than that, as userspace would need to tell the 
kernel the highest priority pending interrupt so that it can program the 
hardware to exit when an interrupt is ready.  However I agree with you 
that in principle we could split the apic emulation between kvm and 
qemu, even with this featurette.

-- 
error compiling committee.c: too many arguments to function


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  parent reply	other threads:[~2007-04-04 16:05 UTC|newest]

Thread overview: 81+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-04-02 11:46 QEMU PIC indirection patch for in-kernel APIC work Gregory Haskins
     [not found] ` <4610A6A9.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-04-04  6:53   ` Avi Kivity
     [not found]     ` <46134B74.1080004-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 14:20       ` Anthony Liguori
     [not found]         ` <4613B438.60107-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 14:39           ` Avi Kivity
     [not found]             ` <4613B89F.8090806-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 14:55               ` Anthony Liguori
     [not found]                 ` <4613BC6B.1070708-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 15:06                   ` Avi Kivity
     [not found]                     ` <4613BF07.50606-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 15:36                       ` Nakajima, Jun
     [not found]                         ` <8FFF7E42E93CC646B632AB40643802A8025B9580-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 15:47                           ` Dor Laor
     [not found]                             ` <64F9B87B6B770947A9F8391472E032160B318E96-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-04 15:53                               ` Anthony Liguori
     [not found]                                 ` <4613C9EE.5030600-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:05                                   ` Avi Kivity [this message]
     [not found]                                     ` <4613CCD1.2070702-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 16:20                                       ` Nakajima, Jun
     [not found]                                         ` <8FFF7E42E93CC646B632AB40643802A8025B962E-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 16:27                                           ` Dor Laor
     [not found]                                             ` <64F9B87B6B770947A9F8391472E032160B318EDB-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-04 16:43                                               ` Anthony Liguori
     [not found]                                                 ` <4613D596.7080201-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:54                                                   ` Avi Kivity
2007-04-04 16:32                                           ` Avi Kivity
     [not found]                                             ` <4613D30E.7030905-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 16:48                                               ` Nakajima, Jun
     [not found]                                                 ` <8FFF7E42E93CC646B632AB40643802A8025B96AA-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 16:58                                                   ` Avi Kivity
     [not found]                                                     ` <4613D93A.5020902-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 17:09                                                       ` Nakajima, Jun
     [not found]                                                         ` <8FFF7E42E93CC646B632AB40643802A8025B970D-1a9uaKK1+wJcIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-04 21:33                                                           ` Dor Laor
2007-04-04 18:12                                                   ` Anthony Liguori
2007-04-04 15:51                       ` Anthony Liguori
     [not found]                         ` <4613C993.9020405-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:02                           ` Avi Kivity
     [not found]                             ` <4613CC01.1090500-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 16:09                               ` Anthony Liguori
     [not found]                                 ` <4613CDB2.4000903-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 16:19                                   ` Avi Kivity
     [not found]                                     ` <4613D001.3040606-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-04 20:01                                       ` Ingo Molnar
     [not found]                                         ` <20070404200112.GA6070-X9Un+BFzKDI@public.gmane.org>
2007-04-04 20:24                                           ` Anthony Liguori
     [not found]                                             ` <4614098F.2030307-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2007-04-04 21:21                                               ` Ingo Molnar
2007-04-04 23:19                                                 ` [kvm-devel] " Rusty Russell
2007-04-05  7:17                                                   ` Avi Kivity
2007-04-06  1:02                                                     ` Rusty Russell
2007-04-08  5:36                                                       ` Avi Kivity
     [not found]                                                         ` <46187F4E.1080807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-08  9:04                                                           ` Muli Ben-Yehuda
2007-04-09  2:50                                                           ` Rusty Russell
     [not found]                                                             ` <1176087018.11664.65.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-09  7:10                                                               ` Avi Kivity
     [not found]                                                                 ` <4619E6DC.3010804-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-09  9:46                                                                   ` Rusty Russell
     [not found]                                                                     ` <1176111984.11664.90.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-09 13:38                                                                       ` Avi Kivity
     [not found]                                                                         ` <461A41CA.9080201-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10  8:07                                                                           ` Evgeniy Polyakov
2007-04-10  8:19                                                                             ` [kvm-devel] " Avi Kivity
     [not found]                                                                               ` <461B48A8.1060904-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10  8:58                                                                                 ` Evgeniy Polyakov
2007-04-10 11:21                                                                                   ` [kvm-devel] " Avi Kivity
     [not found]                                                                                     ` <461B7334.8090807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 11:50                                                                                       ` Evgeniy Polyakov
2007-04-10 12:17                                                                                         ` [kvm-devel] " Avi Kivity
     [not found]                                                                                           ` <461B8069.6070007-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 12:30                                                                                             ` Evgeniy Polyakov
     [not found]                                                                                               ` <20070410123034.GA11493-9fLWQ3dKdXwox3rIn2DAYQ@public.gmane.org>
2007-04-10 12:49                                                                                                 ` Avi Kivity
2007-04-11  3:53                                                                         ` [kvm-devel] " Rusty Russell
     [not found]                                                                           ` <1176263593.26372.84.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-11  4:26                                                                             ` Avi Kivity
     [not found]                                                                               ` <461C6360.1060908-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-11 13:23                                                                                 ` Rusty Russell
     [not found]                                                                                   ` <1176297794.14322.72.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-11 14:28                                                                                     ` Avi Kivity
     [not found]                                                                                       ` <461CF098.3090003-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-11 23:30                                                                                         ` Rusty Russell
     [not found]                                                                                           ` <1176334200.14322.133.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-12  3:32                                                                                             ` Avi Kivity
2007-04-16  0:22                                                                                               ` [kvm-devel] " Rusty Russell
2007-04-16  5:13                                                                                                 ` Avi Kivity
     [not found]                                                   ` <1175728768.12230.593.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-05  9:30                                                     ` Ingo Molnar
     [not found]                                                       ` <20070405093033.GC25448-X9Un+BFzKDI@public.gmane.org>
2007-04-05  9:58                                                         ` Avi Kivity
2007-04-05 10:26                                                           ` [kvm-devel] " Ingo Molnar
2007-04-05 11:26                                                             ` Avi Kivity
     [not found]                                                               ` <4614DCE1.70905-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-05 11:36                                                                 ` Ingo Molnar
2007-04-06  1:16                                                                   ` [kvm-devel] " Rusty Russell
2007-04-06 18:59                                                                     ` Ingo Molnar
2007-04-05 10:55                                                         ` Ingo Molnar
2007-04-05 14:32                                                       ` [kvm-devel] " Anthony Liguori
2007-04-06 10:37                                                         ` Ingo Molnar
2007-04-06 11:07                                                           ` Ingo Molnar
2007-04-04 22:07                                               ` Dor Laor
2007-04-05  6:54                                               ` Avi Kivity
2007-04-05  6:40                                           ` Avi Kivity
2007-04-04 16:23                                   ` Dor Laor
     [not found]                                     ` <64F9B87B6B770947A9F8391472E032160B318ED4-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-04 16:48                                       ` Anthony Liguori
     [not found]                                         ` <4613D6CD.6060209-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>
2007-04-04 20:07                                           ` Ingo Molnar
2007-04-05 13:50                                       ` Dong, Eddie
     [not found]                                         ` <0E6FE5D295DE5B4B8D9070C26A227987E0D1EC-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-05 13:59                                           ` Avi Kivity
     [not found]                                             ` <461500B5.4080102-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-05 14:52                                               ` Dong, Eddie
     [not found]                                                 ` <0E6FE5D295DE5B4B8D9070C26A227987F2444B-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-05 15:01                                                   ` Avi Kivity
     [not found]                                                     ` <46150F4F.4030505-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-05 15:16                                                       ` Dong, Eddie
     [not found]                                                         ` <0E6FE5D295DE5B4B8D9070C26A227987F24452-wq7ZOvIWXbNpB2pF5aRoyrfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2007-04-05 15:26                                                           ` Anthony Liguori
2007-04-05 15:22                                                       ` Anthony Liguori
2007-04-05 14:41                                           ` Dor Laor
     [not found]                                             ` <64F9B87B6B770947A9F8391472E032160B319509-yEcIvxbTEBqsx+V+t5oei8rau4O3wl8o3fe8/T/H7NteoWH0uzbU5w@public.gmane.org>
2007-04-05 14:48                                               ` Dong, Eddie
2007-04-05 14:57                                               ` Dong, Eddie
2007-04-04 17:51           ` Gregory Haskins
     [not found]             ` <46139F39.BA47.005A.0-Et1tbQHTxzrQT0dZR+AlfA@public.gmane.org>
2007-04-04 18:19               ` Anthony Liguori

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