linux-kernel - Re: [PATCH 0/12] PV on HVM Xen

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Message-ID: <alpine.DEB.2.00.1006211713170.18470@kaball-desktop>
Date:	Mon, 21 Jun 2010 17:14:01 +0100
From:	Stefano Stabellini <stefano.stabellini@...citrix.com>
To:	Stefano Stabellini <Stefano.Stabellini@...citrix.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	Don Dutile <ddutile@...hat.com>,
	Sheng Yang <sheng@...ux.intel.com>
Subject: Re: [PATCH 0/12] PV on HVM Xen

As usual I mistyped the topic, the series is made up of 13 patches now
:)

On Mon, 21 Jun 2010, Stefano Stabellini wrote:
> Hi all,
> this is another update on the PV on HVM Xen series; a list of changes
> compared to the previous version follows:
> 
> - the bug caused by modprobing xen frontend modules when xenbus is not
> initialized has been fixed: now xenbus is always initialized during
> postcore_initcall, before device drivers are initialized, so that we
> can be sure that loading xen pv frontends will always happen afterwards,
> no matter how the xen platform pci driver is built.
> In order to do that xenbus_probe has been moved out of the xenbus
> initialization and called it later on at device_initcall.
> 
> - a new HVMOP_pagetable_dying hypercall has been added to notify Xen
> that a pagetable is going to be destroyed: this improves performances
> significantly when running on shadow pagetables.
> A patch is currently need on the Xen side for this to work.
> 
> Jeremy's comments have been addressed:
> 
> - xen_guest_init has been renamed xen_hvm_guest_init;
> 
> - init_hvm_time has been moved to arch/x86/xen/time.c;
> 
> Konrad's comments have been addressed:
> 
> - gnttab_max_nr_grant_frames has been renamed gnttab_max_grant_frames;
> 
> - few inaccurate comments have been rewritten;
> 
> - the preprocessor checks in platform-pci-unplug.c have been moved to
> platform_pci.h;
> 
> - few other code style improvements, like using dev_err instead of
> printk and strncmp instead of strcmp.
> 
> 
> 
> A git tree is available here:
> 
> git://xenbits.xen.org/people/sstabellini/linux-pvhvm.git
> 
> branch name 2.6.34-pvhvm-v4.
> 
> Cheers,
> 
> Stefano
> 
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