[Xen-devel] RE: [PATCH] Page offline support in Xen side

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

Sorry something for testing left in previous patch.

Thanks
Yunhong jiang

xen-devel-bounces@xxxxxxxxxxxxxxxxxxx <> wrote:
> This patch add support to offline a page. The basical idea is,
> when a page is assigned, it will be marked offline pending and
> be moved out of buddy when freed, when a page is free, it will
> be moved out of buddy directly.
> 
> One notice after this change is, now the page->count_info is
> not always 0, especially for shadow page, since the PGC_offlining bit may
> be set. 
> 
> Signed-off-by: Wang, Shane <shane.wang@xxxxxxxxx>
> Signed-off-by: Jiang, Yunhong <yunhong.jiang@xxxxxxxxx>
> 
> The offline_page() can be called from both HV context (like
> MCA handler as discussed in mailing list), or from dom0's user
> space tools, like for proactive action. To invoke from user
> space tools, we need swap the page so that the page is really
> offlined, that patch is still on way.
> 
> Thanks
> Yunhong Jiang

Attachment: page_offline_xen.patch
Description: page_offline_xen.patch

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