From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Hering Subject: Re: [PATCH v4 0/9] toolstack-based approach to pvhvm guest kexec Date: Thu, 4 Dec 2014 12:17:15 +0100 Message-ID: <20141204111715.GA15916@aepfle.de> References: <1417626981-8432-1-git-send-email-vkuznets@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1XwUPY-0006dW-4b for xen-devel@lists.xenproject.org; Thu, 04 Dec 2014 11:17:29 +0000 Content-Disposition: inline In-Reply-To: <1417626981-8432-1-git-send-email-vkuznets@redhat.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Vitaly Kuznetsov Cc: Wei Liu , Andrew Jones , Keir Fraser , Ian Campbell , Stefano Stabellini , Andrew Cooper , Ian Jackson , Tim Deegan , David Vrabel , Jan Beulich , xen-devel@lists.xenproject.org List-Id: xen-devel@lists.xenproject.org On Wed, Dec 03, Vitaly Kuznetsov wrote: > Original description: > > When a PVHVM linux guest performs kexec there are lots of things which > require taking care of: > - shared info, vcpu_info > - grants > - event channels > - ... > Instead of taking care of all these things we can rebuild the domain > performing kexec from scratch doing so-called soft-reboot. > > The idea was suggested by David Vrabel, Jan Beulich, and Konrad Rzeszutek Wilk. > > P.S. The patch series can be tested with PVHVM Linux guest with the following > modifications: Its not clear to me how thew old kernel starts the new kernel. How and where is that done? Olaf