From: Juergen Gross <jgross@suse.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: xen-devel@lists.xensource.com, david.vrabel@citrix.com,
jbeulich@suse.com
Subject: Re: [PATCH 3/4] introduce boot parameter for setting XENFEAT_virtual_p2m
Date: Thu, 20 Nov 2014 05:46:35 +0100 [thread overview]
Message-ID: <546D722B.5040606@suse.com> (raw)
In-Reply-To: <20141119210453.GC20440@laptop.dumpdata.com>
On 11/19/2014 10:04 PM, Konrad Rzeszutek Wilk wrote:
> On Fri, Nov 14, 2014 at 10:37:25AM +0100, Juergen Gross wrote:
>> Introduce a new boot parameter "virt_p2m" to be able to set
>> XENFEAT_virtual_p2m for a pv domain.
>>
>> As long as Xen tools and kdump don't support this new feature it is
>> turned off by default.
>
> Couldn't the dom0_large and dom0 be detected automatically? That is
> the dom0 could advertise it can do large-dom0 support and Xen would
> automatically switch to the right mode?
No, that's not the problem. Xen has to indicate it is capable to handle
the new mode. At dom0 construction time the dom0 kernel can't know about
the capability of kdump to handle the new mode.
In case the new interface is accepted I'll set up some kdump patches to
handle it. We can switch to dom0/dom0_large set on default if they are
accepted on time (e.g. at the time the kernel support for the new
interface is put in place).
Juergen
next prev parent reply other threads:[~2014-11-20 4:46 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-14 9:37 [PATCH 0/4] support guest virtual mapped p2m list Juergen Gross
2014-11-14 9:37 ` [PATCH 1/4] expand x86 arch_shared_info to support linear " Juergen Gross
2014-11-14 11:41 ` Andrew Cooper
2014-11-14 12:53 ` Juergen Gross
2014-11-14 13:56 ` Andrew Cooper
2014-11-14 14:14 ` Jürgen Groß
2014-11-14 14:59 ` Andrew Cooper
2014-11-14 15:32 ` Juergen Gross
2014-11-14 16:08 ` Andrew Cooper
2014-11-18 5:33 ` Juergen Gross
2014-11-18 10:51 ` Andrew Cooper
2014-11-18 10:56 ` David Vrabel
2014-11-21 12:23 ` Jan Beulich
2014-11-21 12:57 ` Juergen Gross
2014-11-21 13:26 ` Andrew Cooper
2014-11-21 13:37 ` Jürgen Groß
2014-11-21 14:04 ` Andrew Cooper
2014-11-21 14:07 ` Jan Beulich
2014-11-14 9:37 ` [PATCH 2/4] introduce arch_get_features() Juergen Gross
2014-11-21 12:26 ` Jan Beulich
2014-11-21 13:21 ` Julien Grall
2014-11-14 9:37 ` [PATCH 3/4] introduce boot parameter for setting XENFEAT_virtual_p2m Juergen Gross
2014-11-19 21:04 ` Konrad Rzeszutek Wilk
2014-11-20 4:46 ` Juergen Gross [this message]
2014-11-14 9:37 ` [PATCH 4/4] document new boot parameter virt_p2m Juergen Gross
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