From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Juergen Gross <jgross@suse.com>, <linux-kernel@vger.kernel.org>,
<xen-devel@lists.xensource.com>, <konrad.wilk@oracle.com>,
<david.vrabel@citrix.com>, <boris.ostrovsky@oracle.com>
Subject: Re: [Xen-devel] [PATCH] xen: limit memory to architectural maximum
Date: Fri, 4 Sep 2015 16:08:09 +0200 [thread overview]
Message-ID: <55E9A5C9.1030201@citrix.com> (raw)
In-Reply-To: <1441369088-11680-1-git-send-email-jgross@suse.com>
El 04/09/15 a les 14.18, Juergen Gross ha escrit:
> When a pv-domain (including dom0) is started it tries to size it's
> p2m list according to the maximum possible memory amount it ever can
> achieve. Limit the initial maximum memory size to the architectural
> limit of the hardware in order to avoid overflows during remapping
> of memory.
>
> This problem will occur when dom0 is started with an initial memory
> size being a multiple of 1GB, but without specifying it's maximum
> memory size. The kernel must be configured without
> CONFIG_XEN_BALLOON_MEMORY_HOTPLUG for the problem to happen.
>
> Reported-by: Roger Pau Monné <roger.pau@citrix.com>
> Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Roger Pau Monné <roger.pau@citrix.com>
WARNING: multiple messages have this Message-ID (diff)
From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Juergen Gross <jgross@suse.com>,
linux-kernel@vger.kernel.org, xen-devel@lists.xensource.com,
konrad.wilk@oracle.com, david.vrabel@citrix.com,
boris.ostrovsky@oracle.com
Subject: Re: [Xen-devel] [PATCH] xen: limit memory to architectural maximum
Date: Fri, 4 Sep 2015 16:08:09 +0200 [thread overview]
Message-ID: <55E9A5C9.1030201@citrix.com> (raw)
In-Reply-To: <1441369088-11680-1-git-send-email-jgross@suse.com>
El 04/09/15 a les 14.18, Juergen Gross ha escrit:
> When a pv-domain (including dom0) is started it tries to size it's
> p2m list according to the maximum possible memory amount it ever can
> achieve. Limit the initial maximum memory size to the architectural
> limit of the hardware in order to avoid overflows during remapping
> of memory.
>
> This problem will occur when dom0 is started with an initial memory
> size being a multiple of 1GB, but without specifying it's maximum
> memory size. The kernel must be configured without
> CONFIG_XEN_BALLOON_MEMORY_HOTPLUG for the problem to happen.
>
> Reported-by: Roger Pau Monné <roger.pau@citrix.com>
> Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Roger Pau Monné <roger.pau@citrix.com>
next prev parent reply other threads:[~2015-09-04 14:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-04 12:18 [PATCH] xen: limit memory to architectural maximum Juergen Gross
2015-09-04 14:08 ` Roger Pau Monné [this message]
2015-09-04 14:08 ` [Xen-devel] " Roger Pau Monné
2015-09-04 15:43 ` David Vrabel
2015-09-04 15:43 ` David Vrabel
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