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Subject[PATCH 32 of 55] xen: fix truncation of machine address
Date
From
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>
---
arch/x86/xen/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -186,7 +186,7 @@

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)



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