From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>, allen.m.kay@intel.com
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [PATCH 3 of 3] kexec: disable iommu jumping into the kdump kernel
Date: Thu, 19 May 2011 10:32:06 -0400 [thread overview]
Message-ID: <20110519143206.GB9854@dumpdata.com> (raw)
In-Reply-To: <4DD43910.6060709@citrix.com>
> >>>What about AMD VI IOMMUs? Does it work when that IOMMU is used?
> >>>
> >>It worked on the AMD box I tested the code on. Like the comment
> >>says - as far as I can tell, it is architecture independent code.
> >>>>+ */
> >>>>+ iommu_disable_x2apic_IR();
> >>>Can't that function be done in the suspend code of the IOMMU?
> >>There is a comment in iommu suspend stating that it cant and isn't
> >>done, but rather is left for the local/ioapic_suspend functions
> >>which dont properly work in the kexec path.
> >OK, how about just moving it out of driver/passthrought/vtd then?
> Because that code is fragile enough without me poking about in it.
> I would prefer someone with more knowledge about IOMMU to make that
> call.
OK. Lets CC him here then.
next prev parent reply other threads:[~2011-05-19 14:32 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-18 18:08 [PATCH 0 of 3] Fix kexec path in xen (take 2) Andrew Cooper
2011-05-18 18:08 ` [PATCH 1 of 3] apic: record local apic state on boot Andrew Cooper
2011-05-18 18:49 ` Konrad Rzeszutek Wilk
2011-05-18 20:27 ` Andrew Cooper
2011-05-18 20:43 ` Konrad Rzeszutek Wilk
2011-05-19 0:56 ` Tian, Kevin
2011-05-19 8:34 ` Ian Campbell
2011-05-19 16:21 ` Konrad Rzeszutek Wilk
2011-05-19 0:54 ` Tian, Kevin
2011-05-18 23:40 ` Keir Fraser
2011-05-19 11:14 ` Andrew Cooper
2011-05-19 14:26 ` Konrad Rzeszutek Wilk
2011-05-19 14:43 ` Andrew Cooper
2011-05-18 18:08 ` [PATCH 2 of 3] apic: remove 'enabled_via_apicbase' variable Andrew Cooper
2011-05-18 18:53 ` Konrad Rzeszutek Wilk
2011-05-18 20:35 ` Andrew Cooper
2011-05-18 20:45 ` Konrad Rzeszutek Wilk
2011-05-19 3:31 ` Tian, Kevin
2011-05-18 18:08 ` [PATCH 3 of 3] kexec: disable iommu jumping into the kdump kernel Andrew Cooper
2011-05-18 18:49 ` Konrad Rzeszutek Wilk
2011-05-18 20:48 ` Andrew Cooper
2011-05-18 20:57 ` Konrad Rzeszutek Wilk
2011-05-18 21:24 ` Andrew Cooper
2011-05-19 14:32 ` Konrad Rzeszutek Wilk [this message]
2011-05-20 0:33 ` Kay, Allen M
2011-05-20 21:55 ` Kay, Allen M
2011-05-18 18:39 ` [PATCH 0 of 3] Fix kexec path in xen (take 2) Konrad Rzeszutek Wilk
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20110519143206.GB9854@dumpdata.com \
--to=konrad.wilk@oracle.com \
--cc=allen.m.kay@intel.com \
--cc=andrew.cooper3@citrix.com \
--cc=xen-devel@lists.xensource.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).