From: Paolo Bonzini <pbonzini@redhat.com>
To: Eduardo Habkost <ehabkost@redhat.com>
Cc: drjones@redhat.com, jyang@redhat.com, libvir-list@redhat.com,
hutao@cn.fujitsu.com, mtosatti@redhat.com, qemu-devel@nongnu.org,
peter.huangpeng@huawei.com, bsd@redhat.com,
anthony@codemonkey.ws, mkletzan@redhat.com,
y-goto@jp.fujitsu.com, lcapitulino@redhat.com, lersek@redhat.com,
afaerber@suse.de, Wanlong Gao <gaowanlong@cn.fujitsu.com>
Subject: Re: [Qemu-devel] [PATCH V17 02/11] NUMA: check if the total numa memory size is equal to ram_size
Date: Tue, 10 Dec 2013 19:03:50 +0100 [thread overview]
Message-ID: <52A75786.3060307@redhat.com> (raw)
In-Reply-To: <20131210131548.GE27737@otherpad.lan.raisama.net>
Il 10/12/2013 14:15, Eduardo Habkost ha scritto:
>> > If the total number of the assigned numa nodes memory is not
>> > equal to the assigned ram size, it will write the wrong data
>> > to ACPI talb, then the guest will ignore the wrong ACPI table
>> > and recognize all memory to one node. It's buggy, we should
>> > check it to ensure that we write the right data to ACPI table.
>> >
>> > Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
> This will make configurations that could be running for years (except
> that the guest OS was ignoring the NUMA data) suddenly stop running. I
> just want to confirm: we really want that, right?
>
> Does libvirt allow this kind of broken configuration to be generated, or
> it already ensures the total NUMA node sizes match RAM size?
It allows this. It just converts the <numa> XML to "-numa node".
Paolo
next prev parent reply other threads:[~2013-12-10 18:04 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-04 7:58 [Qemu-devel] [PATCH V17 00/11] Add support for binding guest numa nodes to host numa nodes Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 01/11] NUMA: move numa related code to new file numa.c Wanlong Gao
2013-12-10 13:06 ` Eduardo Habkost
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 02/11] NUMA: check if the total numa memory size is equal to ram_size Wanlong Gao
2013-12-10 13:15 ` Eduardo Habkost
2013-12-10 18:03 ` Paolo Bonzini [this message]
2013-12-10 19:01 ` Eduardo Habkost
2013-12-11 12:26 ` Daniel P. Berrange
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 03/11] NUMA: Add numa_info structure to contain numa nodes info Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 04/11] NUMA: convert -numa option to use OptsVisitor Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 05/11] NUMA: introduce NumaMemOptions Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 06/11] NUMA: add "-numa mem," options Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 07/11] NUMA: expand MAX_NODES from 64 to 128 Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 08/11] NUMA: parse guest numa nodes memory policy Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 09/11] NUMA: set " Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 10/11] NUMA: add qmp command query-numa Wanlong Gao
2013-12-04 7:58 ` [Qemu-devel] [PATCH V17 11/11] NUMA: convert hmp command info_numa to use qmp command query_numa Wanlong Gao
2013-12-06 9:06 ` [Qemu-devel] [PATCH V17 00/11] Add support for binding guest numa nodes to host numa nodes Paolo Bonzini
2013-12-06 9:31 ` Wanlong Gao
2013-12-06 9:48 ` Paolo Bonzini
2013-12-09 18:16 ` Eduardo Habkost
2013-12-09 18:26 ` Paolo Bonzini
2013-12-06 9:06 ` Paolo Bonzini
2013-12-06 18:49 ` Marcelo Tosatti
2013-12-09 17:33 ` Paolo Bonzini
2013-12-09 18:10 ` Marcelo Tosatti
2013-12-09 18:26 ` Paolo Bonzini
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