Re: [PATCH v1 3/6] kvm: Synchronize the backup bitmap in the last stage

[Peter Xu]

Hi, Gavin,

On Wed, Feb 22, 2023 at 10:44:07AM +1100, Gavin Shan wrote:
> Peter, could you please give some hints for me to understand the atomic
> and non-atomic update here? Ok, I will drop this part of changes in next
> revision with the assumption that we have atomic update supported for
> ARM64.

See commit f39b7d2b96.  Please don't remove the change in this patch.

The comment was just something I thought about when reading, not something
I suggested to change.

If to remove it we'll need to remove the whole chunk not your changes alone
here.  Still, please take it with a grain of salt before anyone can help to
confirm because I can miss something else here.

In short: before we know anything solidly, your current code is exactly
correct, AFAICT.

Thanks,

-- 
Peter Xu