From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Jan Beulich <jbeulich@suse.com>
Cc: Kevin Tian <kevin.tian@intel.com>, Wei Liu <wl@xen.org>,
George Dunlap <george.dunlap@eu.citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Roman Shaposhnik <roman@zededa.com>,
Paul Durrant <paul.durrant@citrix.com>,
xen-devel@lists.xenproject.org
Subject: Re: [Xen-devel] [PATCH] x86/iommu: remove usage of {set/clear}_identity_p2m_entry against PV domains
Date: Mon, 9 Dec 2019 11:59:42 +0100 [thread overview]
Message-ID: <20191209105942.GR980@Air-de-Roger> (raw)
In-Reply-To: <921593c4-0848-b22f-3695-dee94fc60900@suse.com>
On Thu, Dec 05, 2019 at 12:24:29PM +0100, Jan Beulich wrote:
> On 02.08.2019 11:22, Roger Pau Monne wrote:
> > Switch rmrr_identity_mapping to use iommu_{un}map in order to
> > establish RMRR mappings for PV domains, like it's done in
> > arch_iommu_hwdom_init. This solves the issue of a PV hardware domain
> > not getting RMRR mappings because {set/clear}_identity_p2m_entry was
> > not properly updating the iommu page tables.
>
> Aiui we still didn't get to the bottom of this. Together with
> my (much) earlier reply I think I'll drop this from my list
> of pending patches, unless you indicate otherwise.
Yes, IIRC Roman said this was likely caused by a firmware issue?
There was an issue as a result of other IOMMU changes and the code
that was already fixed by a different patch, I think this can be
safely dropped.
Thanks, Roger.
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
prev parent reply other threads:[~2019-12-09 11:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-02 9:22 [Xen-devel] [PATCH] x86/iommu: remove usage of {set/clear}_identity_p2m_entry against PV domains Roger Pau Monne
2019-08-02 13:09 ` Jan Beulich
2019-08-12 10:17 ` Paul Durrant
2019-08-12 13:17 ` George Dunlap
2019-08-12 13:56 ` Roger Pau Monné
2019-08-12 14:24 ` George Dunlap
2019-08-12 14:55 ` Roger Pau Monné
2019-08-12 15:15 ` George Dunlap
2019-08-12 15:30 ` Roger Pau Monné
2019-12-05 11:24 ` Jan Beulich
2019-12-09 10:59 ` Roger Pau Monné [this message]
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=20191209105942.GR980@Air-de-Roger \
--to=roger.pau@citrix.com \
--cc=andrew.cooper3@citrix.com \
--cc=george.dunlap@eu.citrix.com \
--cc=jbeulich@suse.com \
--cc=kevin.tian@intel.com \
--cc=paul.durrant@citrix.com \
--cc=roman@zededa.com \
--cc=wl@xen.org \
--cc=xen-devel@lists.xenproject.org \
/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).