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Subject: Re: [PATCH v2 00/10] virtio-mem: paravirtualized memory


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



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