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authorJeremy Fitzhardinge <jeremy@goop.org>2008-07-08 15:06:54 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-16 11:01:03 +0200
commitebd879e397f6361727c36267a12d1650710e465a (patch)
treee25ef12602eaa5d7ac07ec41e4c77d56f69c8170 /arch/x86/xen
parent39dbc5bd345ebf93e066dde7f8e29467eb61b42e (diff)
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>
Diffstat (limited to 'arch/x86/xen')
-rw-r--r--arch/x86/xen/mmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 2579e70cdd0..05d7392a7a4 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -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)