From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Christoph Lameter <clameter-sJ/iWh9BUns@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org,
Daniel J Blueman
<daniel.blueman-xqY44rlHlBpWk0Htik3J/w@public.gmane.org>,
Andrea Arcangeli <andrea-atKUWr5tajBWk0Htik3J/w@public.gmane.org>,
Robin Holt <holt-sJ/iWh9BUns@public.gmane.org>
Subject: Re: mmu notifiers
Date: Sat, 12 Jan 2008 21:56:58 +0200 [thread overview]
Message-ID: <47891B8A.3030502@qumranet.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801101105210.20353-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
Christoph Lameter wrote:
>
>> Excellent, the more users the patch has, the easier it will be to justify it.
>>
>
> We'd like to make sure though that we can sleep when the hooks have been
> called. We may have to sent a message to kick remote ptes out when local
> pte changes happen.
>
>
It may be as simple as moving the notifier calls down to a sleeping
context, away from the pte lock and any friends.
kvm also needs to send a message on an mmu notification, but that's just
an IPI within the same host.
--
Any sufficiently difficult bug is indistinguishable from a feature.
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WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@qumranet.com>
To: Christoph Lameter <clameter@sgi.com>
Cc: Robin Holt <holt@sgi.com>, Andrea Arcangeli <andrea@qumranet.com>,
kvm-devel@lists.sourceforge.net, linux-mm@kvack.org,
Daniel J Blueman <daniel.blueman@quadrics.com>
Subject: Re: [kvm-devel] mmu notifiers
Date: Sat, 12 Jan 2008 21:56:58 +0200 [thread overview]
Message-ID: <47891B8A.3030502@qumranet.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0801101105210.20353@schroedinger.engr.sgi.com>
Christoph Lameter wrote:
>
>> Excellent, the more users the patch has, the easier it will be to justify it.
>>
>
> We'd like to make sure though that we can sleep when the hooks have been
> called. We may have to sent a message to kick remote ptes out when local
> pte changes happen.
>
>
It may be as simple as moving the notifier calls down to a sleeping
context, away from the pte lock and any friends.
kvm also needs to send a message on an mmu notification, but that's just
an IPI within the same host.
--
Any sufficiently difficult bug is indistinguishable from a feature.
--
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next prev parent reply other threads:[~2008-01-12 19:56 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-09 18:19 mmu notifiers Andrea Arcangeli
2008-01-09 18:19 ` Andrea Arcangeli
[not found] ` <20080109181908.GS6958-lysg2Xt5kKMAvxtiuMwx3w@public.gmane.org>
2008-01-09 21:54 ` Christoph Lameter
2008-01-09 21:54 ` Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801091352320.12335-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-10 11:44 ` Avi Kivity
2008-01-10 11:44 ` [kvm-devel] " Avi Kivity
[not found] ` <47860512.3040607-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-10 13:16 ` Robin Holt
2008-01-10 13:16 ` [kvm-devel] " Robin Holt
[not found] ` <20080110131612.GA1933-sJ/iWh9BUns@public.gmane.org>
2008-01-10 13:27 ` Avi Kivity
2008-01-10 13:27 ` [kvm-devel] " Avi Kivity
[not found] ` <47861D3C.6070709-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-10 14:50 ` Robin Holt
2008-01-10 14:50 ` [kvm-devel] " Robin Holt
2008-01-10 19:06 ` Christoph Lameter
2008-01-10 19:06 ` [kvm-devel] " Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801101105210.20353-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-12 19:56 ` Avi Kivity [this message]
2008-01-12 19:56 ` Avi Kivity
2008-01-10 19:04 ` Christoph Lameter
2008-01-10 19:04 ` [kvm-devel] " Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801101103470.20353-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-12 19:51 ` Avi Kivity
2008-01-12 19:51 ` [kvm-devel] " Avi Kivity
[not found] ` <47891A5C.8060907-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-13 12:09 ` Robin Holt
2008-01-13 12:09 ` [kvm-devel] " Robin Holt
[not found] ` <20080113120939.GA3221-sJ/iWh9BUns@public.gmane.org>
2008-01-13 12:28 ` Avi Kivity
2008-01-13 12:28 ` [kvm-devel] " Avi Kivity
[not found] ` <478A03D8.9050308-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-14 19:51 ` Christoph Lameter
2008-01-14 19:51 ` [kvm-devel] " Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801141150010.8300-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-15 7:43 ` Avi Kivity
2008-01-15 7:43 ` [kvm-devel] " Avi Kivity
2008-01-14 19:49 ` Christoph Lameter
2008-01-14 19:49 ` [kvm-devel] " Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801141148540.8300-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-15 7:38 ` Avi Kivity
2008-01-15 7:38 ` [kvm-devel] " Avi Kivity
[not found] ` <478C62F8.2070702-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-15 17:39 ` Christoph Lameter
2008-01-15 17:39 ` [kvm-devel] " Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801150938260.9893-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-15 17:53 ` Avi Kivity
2008-01-15 17:53 ` [kvm-devel] " Avi Kivity
[not found] ` <478CF30F.1010100-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-15 17:57 ` Christoph Lameter
2008-01-15 17:57 ` [kvm-devel] " Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801150956040.10089-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-15 18:06 ` Avi Kivity
2008-01-15 18:06 ` [kvm-devel] " Avi Kivity
[not found] ` <478CF609.3090304-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-15 18:16 ` Christoph Lameter
2008-01-15 18:16 ` [kvm-devel] " Christoph Lameter
[not found] ` <Pine.LNX.4.64.0801151011380.10265-RYO/mD75kfhx2SFC9UQUAuF7EQX82lMiAL8bYrjMMd8@public.gmane.org>
2008-01-16 7:39 ` Avi Kivity
2008-01-16 7:39 ` [kvm-devel] " Avi Kivity
[not found] ` <478DB4B3.2000505-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-16 18:08 ` Christoph Lameter
2008-01-16 18:08 ` [kvm-devel] " Christoph Lameter
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