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authorIngo Molnar <mingo@elte.hu>2009-02-26 06:30:42 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-26 06:30:42 +0100
commit13b2eda64d14d0a0c15c092664c7351ea58ea851 (patch)
treee0c82eb79a20f515f37ab3ffb9e5039b531eaa8c /arch
parenta852cbfaaf8122827602027b1614971cfd832304 (diff)
parent55d8085671863fe4ee6a17b7814bd38180a44e1d (diff)
Merge branch 'x86/urgent' into x86/core
Conflicts: arch/x86/mach-voyager/voyager_smp.c
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/include/asm/iomap.h3
-rw-r--r--arch/x86/mm/iomap_32.c18
-rw-r--r--arch/x86/xen/enlighten.c3
3 files changed, 24 insertions, 0 deletions
diff --git a/arch/x86/include/asm/iomap.h b/arch/x86/include/asm/iomap.h
index c1f06289b14..86af26091d6 100644
--- a/arch/x86/include/asm/iomap.h
+++ b/arch/x86/include/asm/iomap.h
@@ -23,6 +23,9 @@
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
+int
+is_io_mapping_possible(resource_size_t base, unsigned long size);
+
void *
iomap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t prot);
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index ca53224fc56..6c2b1af1692 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -20,6 +20,24 @@
#include <asm/pat.h>
#include <linux/module.h>
+#ifdef CONFIG_X86_PAE
+int
+is_io_mapping_possible(resource_size_t base, unsigned long size)
+{
+ return 1;
+}
+#else
+int
+is_io_mapping_possible(resource_size_t base, unsigned long size)
+{
+ /* There is no way to map greater than 1 << 32 address without PAE */
+ if (base + size > 0x100000000ULL)
+ return 0;
+
+ return 1;
+}
+#endif
+
/* Map 'pfn' using fixed map 'type' and protections 'prot'
*/
void *
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 86497d5f44c..c52f4034c7f 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -940,6 +940,9 @@ asmlinkage void __init xen_start_kernel(void)
possible map and a non-dummy shared_info. */
per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0];
+ local_irq_disable();
+ early_boot_irqs_off();
+
xen_raw_console_write("mapping kernel into physical memory\n");
pgd = xen_setup_kernel_pagetable(pgd, xen_start_info->nr_pages);