From: Juergen Gross <jgross@suse.com>
To: David Vrabel <david.vrabel@citrix.com>, Jan Beulich <JBeulich@suse.com>
Cc: Kevin Moraga <kmoragas@riseup.net>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
xen-devel@lists.xen.org
Subject: Re: crash on boot with 4.6.1 on fedora 24
Date: Wed, 11 May 2016 15:15:12 +0200 [thread overview]
Message-ID: <57333060.4060509@suse.com> (raw)
In-Reply-To: <57332A0E.5010608@citrix.com>
On 11/05/16 14:48, David Vrabel wrote:
> On 11/05/16 13:21, Jan Beulich wrote:
>>>>> On 11.05.16 at 12:16, <david.vrabel@citrix.com> wrote:
>>> On 11/05/16 08:00, Juergen Gross wrote:
>>>> Adding David as he removed _PAGE_IOMAP in kernel 3.18.
>>>
>>> Why don't we get the RW bits correct when making the pteval when we
>>> already have the pfn, instead trying to fix it up afterwards.
>>
>> While it looks like this would help in this specific situation, the next
>> time something is found to access the M2P early, that would need
>> another fix then. I.e. dealing with the underlying more general
>> issue would seem preferable to me.
>
> I'm more concerned with future regression caused by changes to the
> generic x86 code to (for example) install a different early page fault
> handler.
>
> Can we fix this specific issue in the way I suggested (avoiding the
> unnecessary m2p lookup entirely) and then discuss the merits of the page
> fault handler approach as a separate topic?
Sure.
Juergen
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next prev parent reply other threads:[~2016-05-11 13:15 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-08 22:51 crash on boot with 4.6.1 on fedora 24 Kevin Moraga
2016-05-09 7:23 ` Andrew Cooper
2016-05-09 10:05 ` Jan Beulich
2016-05-09 10:08 ` Jan Beulich
2016-05-09 14:52 ` Kevin Moraga
2016-05-09 15:53 ` Jan Beulich
2016-05-09 16:40 ` Kevin Moraga
2016-05-09 17:15 ` Boris Ostrovsky
2016-05-09 17:22 ` Kevin Moraga
2016-05-09 18:40 ` Boris Ostrovsky
2016-05-10 7:23 ` Jan Beulich
2016-05-10 13:39 ` Boris Ostrovsky
2016-05-10 13:57 ` Jan Beulich
2016-05-10 15:19 ` Juergen Gross
2016-05-10 15:35 ` Jan Beulich
[not found] ` <57321BFA02000078000EA3C2@suse.com>
2016-05-10 15:43 ` Juergen Gross
2016-05-10 16:35 ` Boris Ostrovsky
2016-05-11 5:49 ` Juergen Gross
2016-05-11 6:35 ` Jan Beulich
[not found] ` <5732EEBF02000078000EA613@suse.com>
2016-05-11 7:00 ` Juergen Gross
2016-05-11 7:15 ` Jan Beulich
[not found] ` <5732F83D02000078000EA6A2@suse.com>
2016-05-11 9:57 ` Juergen Gross
2016-05-11 10:03 ` Jan Beulich
[not found] ` <57331FA002000078000EA831@suse.com>
2016-05-11 10:10 ` Juergen Gross
2016-05-11 12:09 ` Jan Beulich
2016-05-11 10:16 ` David Vrabel
2016-05-11 12:21 ` Jan Beulich
2016-05-11 12:48 ` David Vrabel
2016-05-11 13:13 ` Jan Beulich
2016-05-11 13:15 ` Juergen Gross [this message]
2016-05-17 15:11 ` David Vrabel
2016-05-17 20:58 ` Kevin Moraga
2016-05-26 10:24 ` David Vrabel
2016-05-26 14:05 ` Boris Ostrovsky
2016-05-26 15:24 ` David Vrabel
2016-06-01 16:12 ` Martin Cerveny
2016-06-01 16:23 ` Martin Cerveny
2016-06-01 19:32 ` Boris Ostrovsky
2016-06-01 21:01 ` Martin Cerveny
2016-06-01 22:37 ` Boris Ostrovsky
2016-06-02 6:04 ` Martin Cerveny
2016-06-02 13:15 ` Martin Cerveny
2016-06-02 9:54 ` David Vrabel
2016-05-10 16:11 ` Kevin Moraga
2016-05-10 20:11 ` Boris Ostrovsky
2016-05-12 4:52 ` Kevin Moraga
-- strict thread matches above, loose matches on Subject: below --
2016-03-28 17:00 Michael Young
2016-03-29 10:07 ` Jan Beulich
2016-03-29 17:50 ` Konrad Rzeszutek Wilk
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