linux-kernel - Re: [Xen-devel] [PATCH V3 2/6]: PVH: use native irq, enable callback, use HVM ring ops, smp, ...

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Message-ID: <20121018150359.794768d2@mantra.us.oracle.com>
Date:	Thu, 18 Oct 2012 15:03:59 -0700
From:	Mukesh Rathor <mukesh.rathor@...cle.com>
To:	Ian Campbell <Ian.Campbell@...rix.com>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	"Xen-devel@...ts.xensource.com" <Xen-devel@...ts.xensource.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [Xen-devel] [PATCH V3 2/6]: PVH: use native irq, enable
 callback, use HVM ring ops, smp, ...

On Thu, 18 Oct 2012 11:44:37 +0100
Ian Campbell <Ian.Campbell@...rix.com> wrote:

> On Thu, 2012-10-18 at 01:30 +0100, Mukesh Rathor wrote:
> > PVH: make gdt_frames[]/gdt_ents into a union with {gdtaddr, gdtsz},
> > PVH only needs to send down gdtaddr and gdtsz. irq.c: PVH uses
> > native_irq_ops. vcpu hotplug is currently not available for PVH.
> > events.c: setup callback vector for PVH. smp.c: This pertains to
> > bringing up smp vcpus. PVH runs in ring 0, so syscalls are native.
> > Also, the vcpu context is send down via the hcall to be set in the
> > vmcs. gdtaddr and gdtsz are unionionized as PVH only needs to send
> > these two to be set in the vmcs. Finally, PVH ring ops uses HVM
> > paths for xenbus.
> > 
> > Signed-off-by: Mukesh Rathor <mukesh.rathor@...cle.com>
> > ---
> >  arch/x86/include/asm/xen/interface.h |   11 +++++-
> >  arch/x86/xen/irq.c                   |    5 ++-
> >  arch/x86/xen/p2m.c                   |    2 +-
> >  arch/x86/xen/smp.c                   |   75
> > ++++++++++++++++++++++------------ drivers/xen/cpu_hotplug.c
> > |    4 +- drivers/xen/events.c                 |    9 ++++-
> >  drivers/xen/xenbus/xenbus_client.c   |    3 +-
> 
> This patch seems to have been horribly whitespace damaged.

Hmm.. not sure what happened. Resending. See another email.

> Have you seen "git send-email" ? It's very useful for avoiding this
> sort of thing and also takes a lot of the grunt work out of reposting
> a series.

> It also chains the patches as replies to the introductory zero-th mail
> -- which is something I've been meaning to ask you to do for a while.
> It's useful because it joins the series together in a thread which
> makes it easier to keep track of in my INBOX.

I prefer different thread-sets for different version. Otherwise too
many emails makes much harder to manage and figure. Besides, as
comments come in, path x of y,  may contain different files/changes in
a subsequent version.

thanks
Mukesh
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