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From: David Vrabel <david.vrabel@citrix.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>,
	xen-devel@lists.xenproject.org
Cc: Daniel Kiper <daniel.kiper@oracle.com>
Subject: Re: [PATCHv1] xen/balloon: disable memory hotplug in PV guests
Date: Mon, 9 Mar 2015 15:13:40 +0000	[thread overview]
Message-ID: <54FDB8A4.9020904@citrix.com> (raw)
In-Reply-To: <54FDB7B8.7000305@oracle.com>

On 09/03/15 15:09, Boris Ostrovsky wrote:
> On 03/09/2015 10:10 AM, David Vrabel wrote:
>> Memory hotplug doesn't work with PV guests because:
>>
>>    a) The p2m cannot be expanded to cover the new sections.
>>
>>    b) add_memory() builds page tables for the new sections which means
>>       the new pages must have valid p2m entries (or a BUG occurs).
> 
> Is this due to recent p2m rework?

(a) is but (b) has always meant memory hotplug on PV was broken.

David

  reply	other threads:[~2015-03-09 15:13 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-09 14:10 [PATCHv1] xen/balloon: disable memory hotplug in PV guests David Vrabel
2015-03-09 15:09 ` Boris Ostrovsky
2015-03-09 15:13   ` David Vrabel [this message]
2015-03-09 15:25     ` Boris Ostrovsky
2015-03-09 15:31       ` David Vrabel
2015-03-09 15:40         ` Konrad Rzeszutek Wilk
2015-03-09 15:50         ` Boris Ostrovsky
2015-03-09 20:45         ` Daniel Kiper
2015-03-09 20:22       ` Daniel Kiper
2015-03-10 11:40 ` David Vrabel
2015-03-10 13:35   ` Boris Ostrovsky
2015-03-11 14:42     ` David Vrabel
2015-03-11 15:40       ` Boris Ostrovsky
2015-03-16  5:35         ` Juergen Gross
2015-03-16 10:03           ` Daniel Kiper
2015-03-16 10:31             ` Juergen Gross
2015-03-17 12:40               ` Daniel Kiper
2015-03-17 13:00                 ` Juergen Gross
2015-03-18 10:36               ` David Vrabel
2015-03-18 13:57                 ` Juergen Gross
2015-03-18 13:59                   ` David Vrabel
2015-03-18 15:14                     ` Daniel Kiper
2015-03-19  9:55                       ` Juergen Gross
2015-03-19 11:34                         ` Daniel Kiper
2015-03-19 13:38                           ` Juergen Gross
2015-03-19 14:21                             ` Juergen Gross

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