From c0011dbfce69467b23b08fb4a64c39a409a935fb Mon Sep 17 00:00:00 2001 From: Jeremy Fitzhardinge Date: Thu, 4 Feb 2010 14:46:34 -0800 Subject: xen: use _PAGE_IOMAP in ioremap to do machine mappings In a Xen domain, ioremap operates on machine addresses, not pseudo-physical addresses. We use _PAGE_IOMAP to determine whether a mapping is intended for machine addresses. [ Impact: allow Xen domain to map real hardware ] Signed-off-by: Jeremy Fitzhardinge Signed-off-by: Konrad Rzeszutek Wilk --- arch/x86/include/asm/xen/page.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'arch/x86/include/asm/xen') diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h index 018a0a40079..bf5f7d32bd0 100644 --- a/arch/x86/include/asm/xen/page.h +++ b/arch/x86/include/asm/xen/page.h @@ -112,13 +112,9 @@ static inline xpaddr_t machine_to_phys(xmaddr_t machine) */ static inline unsigned long mfn_to_local_pfn(unsigned long mfn) { - extern unsigned long max_mapnr; unsigned long pfn = mfn_to_pfn(mfn); - if ((pfn < max_mapnr) - && !xen_feature(XENFEAT_auto_translated_physmap) - && (get_phys_to_machine(pfn) != mfn)) - return max_mapnr; /* force !pfn_valid() */ - /* XXX fixme; not true with sparsemem */ + if (get_phys_to_machine(pfn) != mfn) + return -1; /* force !pfn_valid() */ return pfn; } -- cgit v1.2.3