public inbox for kexec@lists.infradead.org
 help / color / mirror / Atom feed
From: David Vrabel <david.vrabel@citrix.com>
To: xen-devel@lists.xen.org
Cc: Daniel Kiper <daniel.kiper@oracle.com>,
	kexec@lists.infradead.org, David Vrabel <david.vrabel@citrix.com>,
	Eric Biederman <ebiederm@xmission.com>
Subject: [RFC PATCH 0/3] Improve kexec support in Xen hypervisor
Date: Wed, 16 Jan 2013 16:29:03 +0000	[thread overview]
Message-ID: <1358353746-1899-1-git-send-email-david.vrabel@citrix.com> (raw)

This series of patches improves the kexec hypercall in the Xen
hypervisor.  It is an incomplete prototype but I posting it early for
comments on the proposed ABI/API.

This allows a privileged Xen guest to load kexec images into the
hypervisor from a userspace tool without using the Linux kernel's
kexec subsystem.  It is the first step to supporting kexec of crash
kernels from a pv-ops dom0 kernel (the required kernel and kexec-tools
patches will be posted later).

The kernel will require a kexec hypercall somewhere in the
crash_kexec() path to actually exec the loaded image.  Any preferences
on how the hook for this should be implemented?  Note that the kernel
won't be aware that an image as been loaded as it is loaded directly
into the hypervisor and not via the kernel's kexec_load system call.

Since the kexec hypercall is for use by dom0 I have removed the
implementation of the old load/unload ops and thus guests will require
updated kexec-tools to load images.  Is this acceptable?

David


_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec

             reply	other threads:[~2013-01-16 16:29 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-16 16:29 David Vrabel [this message]
2013-01-16 16:29 ` [PATCH 1/3] kexec: extend hypercall with improved load/unload ops David Vrabel
2013-01-17 12:28   ` Daniel Kiper
2013-01-17 14:50     ` David Vrabel
2013-01-17 15:17       ` Daniel Kiper
2013-01-17 17:53         ` David Vrabel
2013-01-18  9:44           ` Daniel Kiper
2013-01-18  9:50           ` [Xen-devel] " Ian Campbell
2013-01-18 19:01           ` Eric W. Biederman
2013-01-17 12:33   ` [Xen-devel] " Ian Campbell
2013-01-16 16:29 ` [PATCH 2/3] kexec: remove kexec_load and kexec_unload ops David Vrabel
2013-01-16 16:29 ` [PATCH 3/3] libxc: add API for kexec hypercall David Vrabel
2013-01-16 16:59   ` [Xen-devel] " Ian Campbell
2013-01-16 16:33 ` [RFC PATCH 0/3] Improve kexec support in Xen hypervisor David Vrabel
2013-01-16 17:02 ` [Xen-devel] " Ian Campbell
2013-01-16 17:48   ` David Vrabel
2013-01-17  9:35     ` Ian Campbell
2013-01-17 10:46     ` Jan Beulich
2013-01-17 10:51       ` Jan Beulich
2013-01-17 11:27 ` Daniel Kiper
2013-01-17 11:37   ` [Xen-devel] " Andrew Cooper
2013-01-17 12:59     ` Daniel Kiper
2013-01-17 13:01   ` David Vrabel
2013-01-17 13:25     ` Eric W. Biederman

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=1358353746-1899-1-git-send-email-david.vrabel@citrix.com \
    --to=david.vrabel@citrix.com \
    --cc=daniel.kiper@oracle.com \
    --cc=ebiederm@xmission.com \
    --cc=kexec@lists.infradead.org \
    --cc=xen-devel@lists.xen.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