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-rw-r--r--arch/x86/Kconfig4
-rw-r--r--arch/x86/kernel/e820.c4
-rw-r--r--arch/x86/kernel/rtc.c22
-rw-r--r--arch/x86/mm/ioremap.c6
4 files changed, 28 insertions, 8 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f65c2744d57..837a9aae045 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -947,13 +947,15 @@ config X86_PAE
def_bool n
prompt "PAE (Physical Address Extension) Support"
depends on X86_32 && !HIGHMEM4G
- select RESOURCES_64BIT
help
PAE is required for NX support, and furthermore enables
larger swapspace support for non-overcommit purposes. It
has the cost of more pagetable lookup overhead, and also
consumes more pagetable space per process.
+config ARCH_PHYS_ADDR_T_64BIT
+ def_bool X86_64 || X86_PAE
+
# Common NUMA Features
config NUMA
bool "Numa Memory Allocation and Scheduler Support (EXPERIMENTAL)"
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 78e642feac3..ce97bf3bed1 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1282,12 +1282,10 @@ void __init e820_reserve_resources(void)
e820_res = res;
for (i = 0; i < e820.nr_map; i++) {
end = e820.map[i].addr + e820.map[i].size - 1;
-#ifndef CONFIG_RESOURCES_64BIT
- if (end > 0x100000000ULL) {
+ if (end != (resource_size_t)end) {
res++;
continue;
}
-#endif
res->name = e820_type_to_string(e820.map[i].type);
res->start = e820.map[i].addr;
res->end = end;
diff --git a/arch/x86/kernel/rtc.c b/arch/x86/kernel/rtc.c
index 05191bbc68b..0a23b5795b2 100644
--- a/arch/x86/kernel/rtc.c
+++ b/arch/x86/kernel/rtc.c
@@ -223,11 +223,25 @@ static struct platform_device rtc_device = {
static __init int add_rtc_cmos(void)
{
#ifdef CONFIG_PNP
- if (!pnp_platform_devices)
- platform_device_register(&rtc_device);
-#else
+ static const char *ids[] __initconst =
+ { "PNP0b00", "PNP0b01", "PNP0b02", };
+ struct pnp_dev *dev;
+ struct pnp_id *id;
+ int i;
+
+ pnp_for_each_dev(dev) {
+ for (id = dev->id; id; id = id->next) {
+ for (i = 0; i < ARRAY_SIZE(ids); i++) {
+ if (compare_pnp_id(id, ids[i]) != 0)
+ return 0;
+ }
+ }
+ }
+#endif
+
platform_device_register(&rtc_device);
-#endif /* CONFIG_PNP */
+ dev_info(&rtc_device.dev,
+ "registered platform RTC device (no PNP device found)\n");
return 0;
}
device_initcall(add_rtc_cmos);
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index e4c43ec71b2..ae71e11eb3e 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -220,6 +220,12 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
return (__force void __iomem *)phys_to_virt(phys_addr);
/*
+ * Check if the request spans more than any BAR in the iomem resource
+ * tree.
+ */
+ WARN_ON(iomem_map_sanity_check(phys_addr, size));
+
+ /*
* Don't allow anybody to remap normal RAM that we're using..
*/
for (pfn = phys_addr >> PAGE_SHIFT;