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From: David Hildenbrand <david@redhat.com>
To: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: linux-kernel@vger.kernel.org, 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>,
	teawater <teawaterz@linux.alibaba.com>,
	Igor Mammedov <imammedo@redhat.com>,
	"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
	Alexander Duyck <alexander.h.duyck@linux.intel.com>,
	Alexander Potapenko <glider@google.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	Anthony Yznaga <anthony.yznaga@oracle.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Dave Young <dyoung@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" <rafael@kernel.org>,
	"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 v2 00/10] virtio-mem: paravirtualized memory
Date: Fri, 27 Mar 2020 18:03:26 +0100	[thread overview]
Message-ID: <6858c4d8-7570-2c2b-5d53-1a7f994c14ee@redhat.com> (raw)
In-Reply-To: <CAM9Jb+g6DEL1=L1ESfW+Jnr_rfO5rEtOwnp10eCLpajaAv8wvg@mail.gmail.com>

On 27.03.20 17:58, Pankaj Gupta wrote:
> Hi David,
> 
> Trying to test the series with the Qemu branch(virtio-mem) mentioned.
> Unfortunately,
> not able to hotplug memory. Is anything changed from your previous posting
> or I am doing something wrong?
> 
> After giving value to "requested-size", I see size as zero.
> 
> (qemu) qom-set vm0 requested-size 10G
> (qemu) info memory-devices
> Memory device [virtio-mem]: "vm0"
>   memaddr: 0x240000000
>   node: 0
>   requested-size: 10737418240
>   size: 0
>   max-size: 107374182400
>   block-size: 2097152
>   memdev: /objects/mem0
> 
> Guest kernel: 5.6.0-rc4
> Using same Qemu commandline arguments mentioned in cover-letter.

Are you booting from an initrd? Are you compiling virtio-mem as a kernel
module or into the kernel binary?

Make sure that the virtio-mem driver will actually be loaded. (lsmod  |
grep virtio-mem).

Also, double check if there are any virtio-mem dmesg errors/warnings.

-- 
Thanks,

David / dhildenb


  reply	other threads:[~2020-03-27 17:04 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-11 17:14 David Hildenbrand
2020-03-11 17:14 ` [PATCH v2 01/10] virtio-mem: Paravirtualized memory hotplug David Hildenbrand
2020-04-15  5:59   ` Pankaj Gupta
2020-03-11 17:14 ` [PATCH v2 02/10] virtio-mem: Allow to specify an ACPI PXM as nid David Hildenbrand
2020-03-30 11:04   ` Pankaj Gupta
2020-03-11 17:14 ` [PATCH v2 03/10] virtio-mem: Paravirtualized memory hotunplug part 1 David Hildenbrand
2020-03-11 17:14 ` [PATCH v2 04/10] virtio-mem: Paravirtualized memory hotunplug part 2 David Hildenbrand
2020-03-11 17:14 ` [PATCH v2 05/10] mm: Allow to offline unmovable PageOffline() pages via MEM_GOING_OFFLINE David Hildenbrand
2020-04-14 16:34   ` Michael S. Tsirkin
2020-04-15  0:32     ` Andrew Morton
2020-03-11 17:14 ` [PATCH v2 06/10] virtio-mem: Allow to offline partially unplugged memory blocks David Hildenbrand
2020-03-11 17:14 ` [PATCH v2 07/10] mm/memory_hotplug: Introduce offline_and_remove_memory() David Hildenbrand
2020-03-11 17:19   ` David Hildenbrand
2020-04-14 16:35     ` Michael S. Tsirkin
2020-04-15  0:30       ` Andrew Morton
2020-04-15  7:35   ` Pankaj Gupta
2020-03-11 17:14 ` [PATCH v2 08/10] virtio-mem: Offline and remove completely unplugged memory blocks David Hildenbrand
2020-04-15  7:42   ` Pankaj Gupta
2020-03-11 17:14 ` [PATCH v2 09/10] virtio-mem: Better retry handling David Hildenbrand
2020-03-11 17:14 ` [PATCH v2 10/10] MAINTAINERS: Add myself as virtio-mem maintainer David Hildenbrand
2020-03-27 16:58 ` [PATCH v2 00/10] virtio-mem: paravirtualized memory Pankaj Gupta
2020-03-27 17:03   ` David Hildenbrand [this message]
2020-03-27 17:07     ` David Hildenbrand
2020-03-29 15:41     ` Pankaj Gupta
2020-03-30  8:42       ` David Hildenbrand
2020-03-29 12:42 ` Michael S. Tsirkin
2020-03-30  8:16   ` David Hildenbrand
2020-04-14  9:15   ` David Hildenbrand
2020-04-14 16:28     ` Michael S. Tsirkin
2020-04-14 18:39       ` David Hildenbrand

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