[Xen-devel] question on get_page_and_type()

["Santos, Jose Renato G" <joserenato.santos@xxxxxx>]

 

Could someone please explain the following

What is the purpose of get_page_and_type(page, domain, PGT_writable_page) and why is it needed when doing a grant copy in __gnttab_copy()?

Why can't we just use get_page() to prevent the page from being freed while we are doing the copy?

Thanks

 

Renato

 

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