From: Ian Campbell <Ian.Campbell@eu.citrix.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: "Xen-devel@lists.xensource.com" <Xen-devel@lists.xensource.com>,
Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
Subject: Re: xen_hvm_callback_vector
Date: Sat, 28 Aug 2010 19:19:17 +0100 [thread overview]
Message-ID: <1283019557.3469.47.camel@localhost.localdomain> (raw)
In-Reply-To: <4C7842C3.2000300@goop.org>
On Fri, 2010-08-27 at 23:57 +0100, Jeremy Fitzhardinge wrote:
> Should entry_64.S's xen_hvm_callback_vector be calling
> xen_evtchn_do_upcall or xen_hvm_evtchn_do_upcall?
> If not the hvm version, when does that get used?
xen_evtchn_do_upcall is used for the callback vector interrupt injection
(and regular PV obviously).
xen_hvm_evtchn_do_upcall is used by the old-style PCI IRQ injection
route in platform-pci.c if the callback vector is not available.
So entry_64.S should be using xen_evtchn_do_upcall.
Also, I think smp_xen_hvm_callback_vector is simply a redundant
duplicate of xen_evtchn_do_upcall which could be removed.
Ian.
next prev parent reply other threads:[~2010-08-28 18:19 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-27 22:57 xen_hvm_callback_vector Jeremy Fitzhardinge
2010-08-28 18:19 ` Ian Campbell [this message]
2010-08-28 21:40 ` xen_hvm_callback_vector Jeremy Fitzhardinge
2010-08-29 7:24 ` xen_hvm_callback_vector Ian Campbell
2010-08-30 9:37 ` xen_hvm_callback_vector Stefano Stabellini
2010-08-30 16:25 ` xen_hvm_callback_vector Jeremy Fitzhardinge
2010-08-30 16:46 ` xen_hvm_callback_vector Stefano Stabellini
2010-08-30 16:51 ` xen_hvm_callback_vector Stefano Stabellini
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=1283019557.3469.47.camel@localhost.localdomain \
--to=ian.campbell@eu.citrix.com \
--cc=Stefano.Stabellini@eu.citrix.com \
--cc=Xen-devel@lists.xensource.com \
--cc=jeremy@goop.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.