path: root/include/asm-x86/xen/page.h
diff options
authorJeremy Fitzhardinge <>2008-09-11 01:31:48 -0700
committerIngo Molnar <>2008-09-14 17:24:26 +0200
commit947d0496cf3e12ebfa70b3eaf561c25403247ce9 (patch)
treef2f77730b77c50735669dca5ff42afee69463d0e /include/asm-x86/xen/page.h
parent600715dcdf567c86f8b2c6173fcfb4b873e25a19 (diff)
generic: make PFN_PHYS explicitly return phys_addr_t
PFN_PHYS, as its name suggests, turns a pfn into a physical address. However, it is a macro which just operates on its argument without modifying its type. pfns are typed unsigned long, but an unsigned long may not be long enough to hold a physical address (32-bit systems with more than 32 bits of physcial address). Make sure we cast to phys_addr_t to return a complete result. Signed-off-by: Jeremy Fitzhardinge <> Signed-off-by: Ingo Molnar <>
Diffstat (limited to 'include/asm-x86/xen/page.h')
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-x86/xen/page.h b/include/asm-x86/xen/page.h
index 7b3835d3b77..de9170b537a 100644
--- a/include/asm-x86/xen/page.h
+++ b/include/asm-x86/xen/page.h
@@ -76,13 +76,13 @@ static inline unsigned long mfn_to_pfn(unsigned long mfn)
static inline xmaddr_t phys_to_machine(xpaddr_t phys)
unsigned offset = phys.paddr & ~PAGE_MASK;
- return XMADDR(PFN_PHYS((u64)pfn_to_mfn(PFN_DOWN(phys.paddr))) | offset);
+ return XMADDR(PFN_PHYS(pfn_to_mfn(PFN_DOWN(phys.paddr))) | offset);
static inline xpaddr_t machine_to_phys(xmaddr_t machine)
unsigned offset = machine.maddr & ~PAGE_MASK;
- return XPADDR(PFN_PHYS((u64)mfn_to_pfn(PFN_DOWN(machine.maddr))) | offset);
+ return XPADDR(PFN_PHYS(mfn_to_pfn(PFN_DOWN(machine.maddr))) | offset);