Commit ebd879e3 authored Jul 08, 2008 by Jeremy Fitzhardinge Committed by Ingo Molnar Jul 16, 2008

xen: fix truncation of machine address



arbitrary_virt_to_machine can truncate a machine address if its above
4G.  Cast the problem away.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 39dbc5bd

arch/x86/xen/mmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -186,7 +186,7 @@ xmaddr_t arbitrary_virt_to_machine(unsigned long address)

		BUG_ON(pte == NULL);

		return XMADDR((pte_mfn(*pte) << PAGE_SHIFT) + offset);
		return XMADDR(((phys_addr_t)pte_mfn(*pte) << PAGE_SHIFT) + offset);
		}

		void make_lowmem_page_readonly(void *vaddr)