From: Keir Fraser <keir@xensource.com>
To: Markus Armbruster <armbru@redhat.com>, Keir Fraser <keir@xensource.com>
Cc: Atsushi SAKAI <sakaia@jp.fujitsu.com>,
xen-devel@lists.xensource.com,
xen-ia64-devel@lists.xensource.com
Subject: Re: [PATCH][PVFB][LINUX] Fix possible sleep while holding spinlock
Date: Fri, 15 Dec 2006 18:06:13 +0000 [thread overview]
Message-ID: <C1A89495.6290%keir@xensource.com> (raw)
In-Reply-To: <87zm9pt8qm.fsf@pike.pond.sub.org>
On 15/12/06 16:38, "Markus Armbruster" <armbru@redhat.com> wrote:
> This patch fixes the locking, but leaves open a race between
> xenfb_update_screen() and do_no_page(). See the source code for a
> detailed explanation of how it works, and where it fails.
That's a bit of a shame. Is there any way we could use do_file_page() and
have a populate hook (which gets to install the PTE itself)? Or are there
lots of assumptions about VMAs that would take this path, assert
VM_NONLINEAR, etc?
-- Keir
next prev parent reply other threads:[~2006-12-15 18:06 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-10 8:54 [PATCH 2/2] PV framebuffer Markus Armbruster
2006-11-12 14:20 ` Steven Smith
2006-11-14 14:01 ` Markus Armbruster
2006-11-15 12:18 ` Steven Smith
2006-11-15 17:46 ` Markus Armbruster
2006-11-16 16:13 ` Markus Armbruster
2006-11-17 13:23 ` Markus Armbruster
2006-11-17 13:26 ` Markus Armbruster
2006-11-22 11:49 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-11-22 13:46 ` [PATCH] " Markus Armbruster
2006-11-24 5:00 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-11-24 8:10 ` [PATCH] " Markus Armbruster
2006-11-24 8:48 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-11-28 13:04 ` Atsushi SAKAI
2006-11-28 13:55 ` [PATCH] " Markus Armbruster
2006-11-29 13:08 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-12-01 12:35 ` Atsushi SAKAI
2006-12-01 18:03 ` [PATCH] " Markus Armbruster
2006-12-04 8:46 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-12-04 19:44 ` [PATCH] " Markus Armbruster
2006-12-05 12:01 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-12-05 17:32 ` [PATCH] " Markus Armbruster
2006-12-07 0:55 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-12-07 7:58 ` [PATCH] " Markus Armbruster
2006-12-12 11:54 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-12-12 12:23 ` [PATCH] " Markus Armbruster
2006-12-13 2:18 ` Atsushi SAKAI
2006-12-14 10:58 ` [PATCH] Re: [Xen-devel] " Atsushi SAKAI
2006-12-14 11:30 ` [PATCH] " Keir Fraser
2006-12-14 12:37 ` Markus Armbruster
2006-12-14 13:30 ` Keir Fraser
2006-12-15 16:38 ` [PATCH][PVFB][LINUX] Fix possible sleep while holding spinlock Markus Armbruster
2006-12-15 18:06 ` Keir Fraser [this message]
2006-12-15 18:35 ` Markus Armbruster
2006-12-19 2:52 ` Atsushi SAKAI
2006-12-19 7:49 ` Markus Armbruster
2006-12-19 8:17 ` Atsushi SAKAI
2007-01-10 8:50 ` Markus Armbruster
2006-11-28 15:36 ` [PATCH] Re: Re: [PATCH 2/2] PV framebuffer Stephen C. Tweedie
2006-11-24 8:05 ` Markus Armbruster
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