Re: [PATCH v1 0/4] virtio-mem: memory unplug/offlining related cleanups

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On 13.07.23 17:03, Michael S. Tsirkin wrote:
On Thu, Jul 13, 2023 at 04:55:47PM +0200, David Hildenbrand wrote:
Some cleanups+optimizations primarily around offline_and_remove_memory().

Patch #1 drops the "unsafe unplug" feature where we might get stuck in
offline_and_remove_memory() forever.

Patch #2 handles unexpected errors from offline_and_remove_memory() a bit
nicer.

Patch #3 handles the case where offline_and_remove_memory() failed and
we want to retry later to remove a completely unplugged Linux memory
block, to not have them waste memory forever.

Patch #4 something I had lying around for longer, which reacts faster
on config changes when unplugging memory.

Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Cc: Jason Wang <jasowang@xxxxxxxxxx>
Cc: Xuan Zhuo <xuanzhuo@xxxxxxxxxxxxxxxxx>

This looks like something that's reasonable to put in this linux, right?
These are fixes even though they are for theoretical issues.

Yes, but these are not high-priority fixes+optimizations. So if you feel like we should be delaying them, fine with me.

On the other hand, getting them in now also shouldn't really hurt. Especially patch #1 might be better of just going in soner than later.

--
Cheers,

David / dhildenb





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