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Re: [Qemu-devel] [PATCH v8 07/11] migration: add bitmap for copied page


From: Juan Quintela
Subject: Re: [Qemu-devel] [PATCH v8 07/11] migration: add bitmap for copied page
Date: Wed, 07 Jun 2017 14:56:55 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

Alexey Perevalov <address@hidden> wrote:

> +static unsigned long get_copiedmap_size(RAMBlock *rb)
> +{
> +    unsigned long pages;
> +    pages = rb->max_length >> find_first_bit((unsigned long *)&rb->page_size,
> +                                             sizeof(rb->page_size));
> +    return pages;

Are you sure that you want this and not:

pages = rb->max_length >> TARGET_PAGE_BITS?

Otherwise, in some architectures/configurations you can end with a
bitmap size that is different of the migration bitmap size.




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