From: Paolo Bonzini <pbonzini@redhat.com>
To: George Dunlap <george.dunlap@eu.citrix.com>
Cc: Tim Deegan <tim@xen.org>, Yongjie Ren <yongjie.ren@intel.com>,
yanqiangjun@huawei.com, Keir Fraser <keir@xen.org>,
Ian Campbell <Ian.Campbell@citrix.com>,
hanweidong@huawei.com, Xudong Hao <xudong.hao@intel.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
luonengjun@huawei.com, qemu-devel@nongnu.org,
wangzhenguo@huawei.com, xiaowei.yang@huawei.com,
arei.gonglei@huawei.com, Jan Beulich <JBeulich@suse.com>,
YongweiX Xu <yongweix.xu@intel.com>,
SongtaoX Liu <songtaox.liu@intel.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [Qemu-devel] [Xen-devel] [BUG 1747]Guest could't find bootable device with memory more than 3600M
Date: Wed, 12 Jun 2013 16:13:23 -0400 [thread overview]
Message-ID: <51B8D663.70503@redhat.com> (raw)
In-Reply-To: <51B892D8.5040401@eu.citrix.com>
Il 12/06/2013 11:25, George Dunlap ha scritto:
>>> If you have 4GB of RAM it will end at 0x140000000 (or something like
>>> that) and that's where the 64-bit window starts. Of course if you have
>>> no RAM above the PCI hole, the 64-bit window will start at 0x100000000.
>> So there's no provision whatsoever for extending the amount of RAM
>> a guest may see? This is why I'd see any such allocation strategy to
>> start at the end of physical address space, moving downwards.
That'd work too, I guess.
> Is there a mechanism to do memory hot-plug in qemu at the moment? If
> not, then there's no reason to put it anywhere else.
Not yet, but then memory could also be discontiguous as long as you
describe it correctly in the tables.
Paolo
WARNING: multiple messages have this Message-ID (diff)
From: Paolo Bonzini <pbonzini@redhat.com>
To: George Dunlap <george.dunlap@eu.citrix.com>
Cc: Tim Deegan <tim@xen.org>, Yongjie Ren <yongjie.ren@intel.com>,
yanqiangjun@huawei.com, Keir Fraser <keir@xen.org>,
Ian Campbell <Ian.Campbell@citrix.com>,
hanweidong@huawei.com, Xudong Hao <xudong.hao@intel.com>,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
luonengjun@huawei.com, qemu-devel@nongnu.org,
wangzhenguo@huawei.com, xiaowei.yang@huawei.com,
arei.gonglei@huawei.com, Jan Beulich <JBeulich@suse.com>,
YongweiX Xu <yongweix.xu@intel.com>,
SongtaoX Liu <songtaox.liu@intel.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: [Xen-devel] [BUG 1747]Guest could't find bootable device with memory more than 3600M
Date: Wed, 12 Jun 2013 16:13:23 -0400 [thread overview]
Message-ID: <51B8D663.70503@redhat.com> (raw)
In-Reply-To: <51B892D8.5040401@eu.citrix.com>
Il 12/06/2013 11:25, George Dunlap ha scritto:
>>> If you have 4GB of RAM it will end at 0x140000000 (or something like
>>> that) and that's where the 64-bit window starts. Of course if you have
>>> no RAM above the PCI hole, the 64-bit window will start at 0x100000000.
>> So there's no provision whatsoever for extending the amount of RAM
>> a guest may see? This is why I'd see any such allocation strategy to
>> start at the end of physical address space, moving downwards.
That'd work too, I guess.
> Is there a mechanism to do memory hot-plug in qemu at the moment? If
> not, then there's no reason to put it anywhere else.
Not yet, but then memory could also be discontiguous as long as you
describe it correctly in the tables.
Paolo
next prev parent reply other threads:[~2013-06-12 20:13 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-07 9:20 [BUG 1747]Guest could't find bootable device with memory more than 3600M Xu, YongweiX
2013-06-07 12:15 ` Stefano Stabellini
2013-06-07 15:42 ` George Dunlap
2013-06-07 15:56 ` Stefano Stabellini
2013-06-08 7:27 ` Hao, Xudong
2013-06-10 11:49 ` George Dunlap
2013-06-11 17:26 ` [Qemu-devel] [Xen-devel] " Stefano Stabellini
2013-06-11 17:26 ` Stefano Stabellini
2013-06-12 7:25 ` [Qemu-devel] " Jan Beulich
2013-06-12 7:25 ` Jan Beulich
2013-06-12 8:31 ` [Qemu-devel] " Ian Campbell
2013-06-12 8:31 ` Ian Campbell
2013-06-12 9:02 ` [Qemu-devel] " Jan Beulich
2013-06-12 9:02 ` Jan Beulich
2013-06-12 9:22 ` [Qemu-devel] " Ian Campbell
2013-06-12 9:22 ` Ian Campbell
2013-06-12 10:07 ` [Qemu-devel] [Xen-devel] " Jan Beulich
2013-06-12 10:07 ` Jan Beulich
2013-06-12 11:23 ` [Qemu-devel] " Ian Campbell
2013-06-12 11:23 ` Ian Campbell
2013-06-12 11:56 ` [Qemu-devel] " Jan Beulich
2013-06-12 11:56 ` Jan Beulich
2013-06-12 11:59 ` [Qemu-devel] " Ian Campbell
2013-06-12 11:59 ` Ian Campbell
2013-06-12 10:05 ` [Qemu-devel] " George Dunlap
2013-06-12 10:05 ` George Dunlap
2013-06-12 10:11 ` [Qemu-devel] " Jan Beulich
2013-06-12 10:11 ` Jan Beulich
2013-06-12 10:15 ` [Qemu-devel] " George Dunlap
2013-06-12 10:15 ` George Dunlap
2013-06-12 13:23 ` [Qemu-devel] " Paolo Bonzini
2013-06-12 13:23 ` Paolo Bonzini
2013-06-12 13:49 ` [Qemu-devel] " Jan Beulich
2013-06-12 13:49 ` Jan Beulich
2013-06-12 14:02 ` [Qemu-devel] " Paolo Bonzini
2013-06-12 14:02 ` Paolo Bonzini
2013-06-12 14:19 ` [Qemu-devel] " Jan Beulich
2013-06-12 14:19 ` Jan Beulich
2013-06-12 15:25 ` [Qemu-devel] " George Dunlap
2013-06-12 15:25 ` George Dunlap
2013-06-12 20:13 ` Paolo Bonzini [this message]
2013-06-12 20:13 ` Paolo Bonzini
2013-06-13 13:44 ` [Qemu-devel] " Stefano Stabellini
2013-06-13 13:44 ` Stefano Stabellini
2013-06-13 13:54 ` [Qemu-devel] " George Dunlap
2013-06-13 13:54 ` George Dunlap
2013-06-13 14:50 ` [Qemu-devel] " Stefano Stabellini
2013-06-13 14:50 ` Stefano Stabellini
2013-06-13 15:06 ` [Qemu-devel] [Xen-devel] " Jan Beulich
2013-06-13 15:06 ` Jan Beulich
2013-06-13 15:29 ` [Qemu-devel] [Xen-devel] " George Dunlap
2013-06-13 15:29 ` George Dunlap
2013-06-13 16:13 ` [Qemu-devel] " Stefano Stabellini
2013-06-13 16:13 ` Stefano Stabellini
2013-06-13 15:34 ` [Qemu-devel] " Ian Campbell
2013-06-13 15:34 ` Ian Campbell
2013-06-13 16:55 ` [Qemu-devel] " Stefano Stabellini
2013-06-13 16:55 ` Stefano Stabellini
2013-06-13 17:22 ` [Qemu-devel] " Ian Campbell
2013-06-13 17:22 ` Ian Campbell
2013-06-14 10:53 ` [Qemu-devel] " George Dunlap
2013-06-14 10:53 ` George Dunlap
2013-06-14 11:34 ` [Qemu-devel] [Xen-devel] " Ian Campbell
2013-06-14 11:34 ` Ian Campbell
2013-06-14 14:14 ` [Qemu-devel] " George Dunlap
2013-06-14 14:14 ` George Dunlap
2013-06-14 14:36 ` [Qemu-devel] " George Dunlap
2013-06-14 14:36 ` George Dunlap
2013-06-13 14:54 ` [Qemu-devel] " Paolo Bonzini
2013-06-13 14:54 ` Paolo Bonzini
2013-06-13 15:16 ` [Qemu-devel] [Xen-devel] " Ian Campbell
2013-06-13 15:16 ` Ian Campbell
2013-06-13 15:30 ` [Qemu-devel] [Xen-devel] " George Dunlap
2013-06-13 15:30 ` George Dunlap
2013-06-13 15:36 ` [Qemu-devel] " Ian Campbell
2013-06-13 15:36 ` Ian Campbell
2013-06-13 15:40 ` [Qemu-devel] " George Dunlap
2013-06-13 15:40 ` George Dunlap
2013-06-13 15:42 ` [Qemu-devel] " Ian Campbell
2013-06-13 15:42 ` Ian Campbell
2013-06-13 15:40 ` [Qemu-devel] " Stefano Stabellini
2013-06-13 15:40 ` Stefano Stabellini
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