From: Alex Shi <alex.shi@linux.alibaba.com>
To: David Hildenbrand <david@redhat.com>, linux-kernel@vger.kernel.org
Cc: linux-mm@kvack.org, virtio-dev@lists.oasis-open.org,
virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
Michal Hocko <mhocko@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
"Michael S . Tsirkin" <mst@redhat.com>,
Sebastien Boeuf <sebastien.boeuf@intel.com>,
Samuel Ortiz <samuel.ortiz@intel.com>,
Robert Bradford <robert.bradford@intel.com>,
Luiz Capitulino <lcapitulino@redhat.com>,
Alexander Duyck <alexander.h.duyck@linux.intel.com>,
Alexander Potapenko <glider@google.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Anshuman Khandual <anshuman.khandual@arm.com>,
Anthony Yznaga <anthony.yznaga@oracle.com>,
Dan Williams <dan.j.williams@intel.com>,
Dave Young <dyoung@redhat.com>,
Igor Mammedov <imammedo@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Juergen Gross <jgross@suse.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Len Brown <lenb@kernel.org>,
Mel Gorman <mgorman@techsingularity.net>,
Michal Hocko <mhocko@suse.com>,
Mike Rapoport <rppt@linux.ibm.com>,
Oscar Salvador <osalvador@suse.com>,
Oscar Salvador <osalvador@suse.de>,
Pavel Tatashin <pasha.tatashin@soleen.com>,
Pavel Tatashin <pavel.tatashin@microsoft.com>,
Pingfan Liu <kernelfans@gmail.com>, Qian Cai <cai@lca.pw>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Stefan Hajnoczi <stefanha@redhat.com>,
Vlastimil Babka <vbabka@suse.cz>,
Wei Yang <richard.weiyang@gmail.com>
Subject: Re: [PATCH RFC v4 00/13] virtio-mem: paravirtualized memory
Date: Fri, 5 Jun 2020 16:55:18 +0800 [thread overview]
Message-ID: <1cfa9edb-47ea-1495-4e28-4cf391eab44c@linux.alibaba.com> (raw)
In-Reply-To: <9acc5d04-c8e9-ef53-85e4-709030997ca6@redhat.com>
在 2020/1/9 下午9:48, David Hildenbrand 写道:
> Ping,
>
> I'd love to get some feedback on
>
> a) The remaining MM bits from MM folks (especially, patch #6 and #8).
> b) The general virtio infrastructure (esp. uapi in patch #2) from virtio
> folks.
>
> I'm planning to send a proper v1 (!RFC) once I have all necessary MM
> acks. In the meanwhile, I will do more testing and minor reworks (e.g.,
> fix !CONFIG_NUMA compilation).
Hi David,
Thanks for your work!
I am trying your https://github.com/davidhildenbrand/linux.git virtio-mem-v5
which works fine for me, but just a 'DMA error' happens when a vm start with
less than 2GB memory, Do I missed sth?
Thanks
Alex
(qemu) qom-set vm0 requested-size 1g
(qemu) [ 26.560026] virtio_mem virtio0: plugged size: 0x0
[ 26.560648] virtio_mem virtio0: requested size: 0x40000000
[ 26.561730] systemd-journald[167]: no db file to read /run/udev/data/+virtio:virtio0: No such file or directory
[ 26.563138] systemd-journald[167]: no db file to read /run/udev/data/+virtio:virtio0: No such file or directory
[ 26.569122] Built 1 zonelists, mobility grouping on. Total pages: 513141
[ 26.570039] Policy zone: Normal
(qemu) [ 32.175838] e1000 0000:00:03.0: swiotlb buffer is full (sz: 81 bytes), total 0 (slots), used 0 (slots)
[ 32.176922] e1000 0000:00:03.0: TX DMA map failed
[ 32.177488] e1000 0000:00:03.0: swiotlb buffer is full (sz: 81 bytes), total 0 (slots), used 0 (slots)
[ 32.178535] e1000 0000:00:03.0: TX DMA map failed
my qemu command is like this:
qemu-system-x86_64 --enable-kvm \
-m 2G,maxmem=16G -kernel /root/linux-next/$1/arch/x86/boot/bzImage \
-smp 4 \
-append "earlyprintk=ttyS0 root=/dev/sda1 console=ttyS0 debug psi=1 nokaslr ignore_loglevel" \
-hda /root/CentOS-7-x86_64-Azure-1703.qcow2 \
-net user,hostfwd=tcp::2222-:22 -net nic -s \
-object memory-backend-ram,id=mem0,size=3G \
-device virtio-mem-pci,id=vm0,memdev=mem0,node=0,requested-size=0M \
--nographic
next prev parent reply other threads:[~2020-06-05 8:55 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-12 17:11 [PATCH RFC v4 00/13] virtio-mem: paravirtualized memory David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 01/13] ACPI: NUMA: export pxm_to_node David Hildenbrand
2019-12-12 21:43 ` Rafael J. Wysocki
2019-12-13 9:41 ` David Hildenbrand
2019-12-13 9:47 ` Rafael J. Wysocki
2019-12-12 17:11 ` [PATCH RFC v4 02/13] virtio-mem: Paravirtualized memory hotplug David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 03/13] virtio-mem: Paravirtualized memory hotunplug part 1 David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 04/13] mm: Export alloc_contig_range() / free_contig_range() David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 05/13] virtio-mem: Paravirtualized memory hotunplug part 2 David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 06/13] mm: Allow to offline unmovable PageOffline() pages via MEM_GOING_OFFLINE David Hildenbrand
2020-02-25 18:26 ` Alexander Duyck
2020-02-25 18:49 ` David Hildenbrand
2020-02-25 21:46 ` Alexander Duyck
2020-02-25 22:19 ` David Hildenbrand
2020-02-26 16:27 ` Alexander Duyck
2019-12-12 17:11 ` [PATCH RFC v4 07/13] virtio-mem: Allow to offline partially unplugged memory blocks David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 08/13] mm/memory_hotplug: Introduce offline_and_remove_memory() David Hildenbrand
2020-02-25 14:11 ` Michal Hocko
2020-02-25 14:27 ` David Hildenbrand
2020-03-02 12:48 ` Michal Hocko
2020-03-02 12:53 ` David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 09/13] virtio-mem: Offline and remove completely unplugged memory blocks David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 10/13] virtio-mem: Better retry handling David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 11/13] mm/vmscan: Move count_vm_event(DROP_SLAB) into drop_slab() David Hildenbrand
2020-02-25 14:13 ` Michal Hocko
2019-12-12 17:11 ` [PATCH RFC v4 12/13] mm/vmscan: Export drop_slab() and drop_slab_node() David Hildenbrand
2020-02-25 14:58 ` Michal Hocko
2020-02-25 15:09 ` David Hildenbrand
2020-02-25 17:06 ` Michal Hocko
2020-02-25 17:23 ` David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 13/13] virtio-mem: Drop slab objects when unplug continues to fail David Hildenbrand
2019-12-13 20:15 ` [PATCH RFC v4 00/13] virtio-mem: paravirtualized memory Konrad Rzeszutek Wilk
2019-12-16 11:03 ` David Hildenbrand
2019-12-24 6:58 ` teawater
2019-12-24 9:28 ` David Hildenbrand
2020-01-09 13:48 ` David Hildenbrand
2020-01-29 9:41 ` David Hildenbrand
2020-02-25 9:58 ` David Hildenbrand
2020-06-05 8:55 ` Alex Shi [this message]
2020-06-05 9:08 ` David Hildenbrand
2020-06-05 9:36 ` David Hildenbrand
2020-06-05 10:05 ` David Hildenbrand
2020-06-05 10:46 ` Alex Shi
2020-06-05 12:18 ` David Hildenbrand
2020-06-09 3:05 ` Alex Shi
2020-06-05 10:08 ` Alex Shi
2020-06-05 10:06 ` Alex Shi
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