[Xen-devel] [PATCH] Do not set page's count_info directly

["Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>]

Page offline patch add several flag to page_info->count_info. However, 
currently some code will try to set count_info after alloc_domheap_pages 
without using "&" or "|" operation, this may cause the new flags lost, since 
there are no protection. This patch try to make sure all write to count_info 
will only impact specific field.

Also currently shadow code assume count_info is 0 for shadow page, however, 
this is invalid after the new flags. Change some assert in shadow code.

Signed-off-by: Jiang, Yunhong <yunhong.jiang@xxxxxxxxx>

Thanks
Yunhong Jiang

Attachment: clear_count_info.patch
Description: clear_count_info.patch

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