From: Mukesh Rathor <mukesh.rathor@oracle.com>
To: "Xen-devel@lists.xensource.com" <Xen-devel@lists.xensource.com>,
Keir Fraser <keir.xen@gmail.com>,
"stefano.stabellini@eu.citrix.com"
<stefano.stabellini@eu.citrix.com>,
Ian Campbell <Ian.Campbell@citrix.com>
Subject: HYBRID: memory mapped IO
Date: Tue, 14 Feb 2012 18:53:14 -0800 [thread overview]
Message-ID: <20120214185314.5546a24e@mantra.us.oracle.com> (raw)
Hi Guys,
ich_force_enable_hpet() in linux wants to do mmio. It calls ioremap_pte_range
to map phys addr to a VA. Xen then updates the PV dom0's L1 with
requested io attributes. I'm trying to figure how to do this for PV in
HVM container. I was hoping to update the EPT directly.
I was thinking of just doing guest_physmap_add_entry() but the mfn is not
going to be valid. Is there any other code path that will let me do this?
Another possiblity would be handle_mmio().
thanks,
Mukesh
next reply other threads:[~2012-02-15 2:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-15 2:53 Mukesh Rathor [this message]
2012-02-15 11:49 ` HYBRID: memory mapped IO Stefano Stabellini
2012-02-15 20:11 ` Mukesh Rathor
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=20120214185314.5546a24e@mantra.us.oracle.com \
--to=mukesh.rathor@oracle.com \
--cc=Ian.Campbell@citrix.com \
--cc=Xen-devel@lists.xensource.com \
--cc=keir.xen@gmail.com \
--cc=stefano.stabellini@eu.citrix.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).