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From: Anthony Liguori <aliguori@us.ibm.com>
To: Marcelo Tosatti <marcelo@kvack.org>
Cc: kvm-devel@lists.sourceforge.net,
	Andrea Arcangeli <andrea@qumranet.com>,
	Avi Kivity <avi@qumranet.com>
Subject: Re: [PATCH] QEMU support for virtio balloon driver
Date: Sat, 08 Mar 2008 20:46:35 -0600	[thread overview]
Message-ID: <47D34F8B.5030406@us.ibm.com> (raw)
In-Reply-To: <20080308205115.GA20105@dmt>

Marcelo Tosatti wrote:
>> How to proceed now? Do we want to efficiently support ballooning without
>> mmu notifiers? If so, an ioctl to zap the mmu is necessary as discussed
>> before.
>>     
>
> Err, actually zapping the mmu is necessary to guarantee guest will not
> use stale shadow entries vs entries pointing to old unreacheable pages.
>   

I'm happy to just not madvise() with older host userspaces.  Doing an 
ioctl and pausing all the VCPUs is pretty ugly.

Regards,

Anthony Liguori

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  reply	other threads:[~2008-03-09  2:46 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-24 21:23 [PATCH] QEMU support for virtio balloon driver Anthony Liguori
     [not found] ` <1201209786831-git-send-email-aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-24 22:29   ` Anthony Liguori
     [not found]     ` <4799115F.8010506-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-25 16:08       ` Marcelo Tosatti
2008-01-25 17:02         ` Anthony Liguori
     [not found]           ` <479A162C.1060209-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-26 18:47             ` Avi Kivity
2008-03-08 19:27               ` Marcelo Tosatti
2008-03-08 20:51                 ` Marcelo Tosatti
2008-03-09  2:46                   ` Anthony Liguori [this message]
2008-01-26  3:35         ` Rusty Russell
2008-01-25 23:08       ` Dor Laor
     [not found]         ` <1201302492.2944.8.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2008-01-26  0:10           ` Anthony Liguori
     [not found]             ` <479A7A5C.6030005-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-26 18:35               ` Avi Kivity
  -- strict thread matches above, loose matches on Subject: below --
2008-02-25 19:47 Anthony Liguori
2008-02-25 23:45 ` Dor Laor

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