Re: [Qemu-devel] [PATCH v20 0/7] Virtio-balloon Enhancement

[Matthew Wilcox]

On Tue, Dec 19, 2017 at 11:05:11PM +0900, Tetsuo Handa wrote:
> Removing exceptional path made this patch easier to read.
> But what I meant is
> 
>   Can you eliminate exception path and fold all xbitmap patches into one, and
>   post only one xbitmap patch without virtio-balloon changes? 
> 
> .
> 
> I still think we don't need xb_preload()/xb_preload_end().
> I think xb_find_set() has a bug in !node path.

Don't think.  Write a test-case.  Please.  If it shows a bug, then great,
Wei has an example of what the bug is to fix.  If it doesn't show a bug,
then we can add it to the test suite anyway, to ensure that case continues
to work in the future.

> Also, please avoid unconditionally adding to builtin modules.
> There are users who want to save even few KB.
> 
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