On Mon, Feb 21, 2011 at 11:47:36AM +0800, Lai Jiangshan wrote: > > Atomic-able hva_to_pfn() patches and allow-read-only-page patches > are merged almost the same time. But hva_to_pfn() does not handle > these two issues well together. > > When @atomic && !@write_fault && host-is-read-only-page-mapped > the code will return fault_page, actually, it will be better > if we return the pfn of the read-only-page. > > Signed-off-by: Lai Jiangshan <laijs@xxxxxxxxxxxxxx> Lai, For pte prefetch, user of atomic hva_to_pfn, the write_fault parameter is meaningless (since that information is only available for the pte being faulted). Returning fault page for a read-only page is useful so that pte prefetch is aborted. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
