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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 18:46:26 +0800	[thread overview]
Message-ID: <95c6ef21-23e0-c768-999d-3af7f69d02d3@linux.alibaba.com> (raw)
In-Reply-To: <e1643897-ebd7-75f8-d271-44f62318aa66@redhat.com>



在 2020/6/5 下午6:05, David Hildenbrand 写道:
>> I guess I know what's happening here. In case we only have DMA memory
>> when booting, we don't reserve swiotlb buffers. Once we hotplug memory
>> and online ZONE_NORMAL, we don't have any swiotlb DMA bounce buffers to
>> map such PFNs (total 0 (slots), used 0 (slots)).
>>
>> Can you try with "swiotlb=force" on the kernel cmdline?
> Alternative, looks like you can specify "-m 2G,maxmem=16G,slots=1", to
> create proper ACPI tables that indicate hotpluggable memory. (I'll have
> to look into QEMU to figure out to always indicate hotpluggable memory
> that way).
> 


That works too. Yes, better resolved in qemu, maybe. :)

Thanks!

WARNING: multiple messages have this Message-ID (diff)
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 <jasowa>
Subject: Re: [PATCH RFC v4 00/13] virtio-mem: paravirtualized memory
Date: Fri, 5 Jun 2020 18:46:26 +0800	[thread overview]
Message-ID: <95c6ef21-23e0-c768-999d-3af7f69d02d3@linux.alibaba.com> (raw)
In-Reply-To: <e1643897-ebd7-75f8-d271-44f62318aa66@redhat.com>



在 2020/6/5 下午6:05, David Hildenbrand 写道:
>> I guess I know what's happening here. In case we only have DMA memory
>> when booting, we don't reserve swiotlb buffers. Once we hotplug memory
>> and online ZONE_NORMAL, we don't have any swiotlb DMA bounce buffers to
>> map such PFNs (total 0 (slots), used 0 (slots)).
>>
>> Can you try with "swiotlb=force" on the kernel cmdline?
> Alternative, looks like you can specify "-m 2G,maxmem=16G,slots=1", to
> create proper ACPI tables that indicate hotpluggable memory. (I'll have
> to look into QEMU to figure out to always indicate hotpluggable memory
> that way).
> 


That works too. Yes, better resolved in qemu, maybe. :)

Thanks!

  reply	other threads:[~2020-06-05 10:46 UTC|newest]

Thread overview: 117+ 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 ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 01/13] ACPI: NUMA: export pxm_to_node David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " David Hildenbrand
2019-12-12 21:43   ` Rafael J. Wysocki
2019-12-13  9:41     ` David Hildenbrand
2019-12-13  9:41     ` David Hildenbrand
2019-12-13  9:41       ` [virtio-dev] " David Hildenbrand
2019-12-13  9:47       ` Rafael J. Wysocki
2019-12-13  9:47         ` Rafael J. Wysocki
2019-12-13  9:47       ` Rafael J. Wysocki
2019-12-12 17:11 ` David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 02/13] virtio-mem: Paravirtualized memory hotplug David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` 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   ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` 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   ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` 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   ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` 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
2019-12-12 17:11 ` David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " David Hildenbrand
2020-02-25 18:26   ` Alexander Duyck
2020-02-25 18:26     ` [virtio-dev] " Alexander Duyck
2020-02-25 18:26     ` Alexander Duyck
2020-02-25 18:49     ` David Hildenbrand
2020-02-25 18:49       ` [virtio-dev] " David Hildenbrand
2020-02-25 18:49       ` David Hildenbrand
2020-02-25 21:46       ` Alexander Duyck
2020-02-25 21:46         ` [virtio-dev] " Alexander Duyck
2020-02-25 21:46         ` Alexander Duyck
2020-02-25 22:19         ` David Hildenbrand
2020-02-25 22:19           ` [virtio-dev] " David Hildenbrand
2020-02-25 22:19           ` David Hildenbrand
2020-02-26 16:27           ` Alexander Duyck
2020-02-26 16:27             ` [virtio-dev] " Alexander Duyck
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 ` David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 08/13] mm/memory_hotplug: Introduce offline_and_remove_memory() David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " David Hildenbrand
2020-02-25 14:11   ` Michal Hocko
2020-02-25 14:27     ` David Hildenbrand
2020-02-25 14:27       ` [virtio-dev] " David Hildenbrand
2020-03-02 12:48       ` Michal Hocko
2020-03-02 12:53         ` David Hildenbrand
2020-03-02 12:53           ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` 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   ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 10/13] virtio-mem: Better retry handling David Hildenbrand
2019-12-12 17:11 ` David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " 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
2019-12-12 17:11 ` David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " 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
2019-12-12 17:11   ` [virtio-dev] " David Hildenbrand
2020-02-25 14:58   ` Michal Hocko
2020-02-25 15:09     ` David Hildenbrand
2020-02-25 15:09       ` [virtio-dev] " David Hildenbrand
2020-02-25 17:06       ` Michal Hocko
2020-02-25 17:23         ` David Hildenbrand
2020-02-25 17:23           ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` David Hildenbrand
2019-12-12 17:11 ` [PATCH RFC v4 13/13] virtio-mem: Drop slab objects when unplug continues to fail David Hildenbrand
2019-12-12 17:11   ` [virtio-dev] " David Hildenbrand
2019-12-12 17:11 ` David Hildenbrand
2019-12-13 20:15 ` [PATCH RFC v4 00/13] virtio-mem: paravirtualized memory Konrad Rzeszutek Wilk
2019-12-13 20:15   ` Konrad Rzeszutek Wilk
2019-12-16 11:03   ` David Hildenbrand
2019-12-16 11:03   ` David Hildenbrand
2019-12-16 11:03     ` [virtio-dev] " David Hildenbrand
2019-12-24  6:58 ` teawater
2019-12-24  9:28   ` David Hildenbrand
2019-12-24  9:28     ` [virtio-dev] " David Hildenbrand
2019-12-24  9:28   ` David Hildenbrand
2020-01-09 13:48 ` David Hildenbrand
2020-01-09 13:48   ` [virtio-dev] " David Hildenbrand
2020-01-29  9:41   ` David Hildenbrand
2020-01-29  9:41     ` [virtio-dev] " David Hildenbrand
2020-01-29  9:41     ` David Hildenbrand
2020-02-25  9:58     ` David Hildenbrand
2020-02-25  9:58       ` [virtio-dev] " David Hildenbrand
2020-02-25  9:58       ` David Hildenbrand
2020-06-05  8:55   ` Alex Shi
2020-06-05  8:55     ` Alex Shi
2020-06-05  9:08     ` David Hildenbrand
2020-06-05  9:08       ` [virtio-dev] " David Hildenbrand
2020-06-05  9:08       ` David Hildenbrand
2020-06-05  9:36       ` David Hildenbrand
2020-06-05  9:36         ` [virtio-dev] " David Hildenbrand
2020-06-05  9:36         ` David Hildenbrand
2020-06-05 10:05         ` David Hildenbrand
2020-06-05 10:05           ` [virtio-dev] " David Hildenbrand
2020-06-05 10:05           ` David Hildenbrand
2020-06-05 10:46           ` Alex Shi [this message]
2020-06-05 10:46             ` Alex Shi
2020-06-05 12:18             ` David Hildenbrand
2020-06-05 12:18               ` [virtio-dev] " David Hildenbrand
2020-06-05 12:18               ` David Hildenbrand
2020-06-09  3:05               ` Alex Shi
2020-06-09  3:05                 ` Alex Shi
2020-06-05 10:08         ` Alex Shi
2020-06-05 10:08           ` Alex Shi
2020-06-05 10:06       ` Alex Shi
2020-06-05 10:06         ` Alex Shi
2020-01-09 13:48 ` David Hildenbrand
  -- strict thread matches above, loose matches on Subject: below --
2019-12-12 17:11 David Hildenbrand

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