7 files changed, 22 insertions, 25 deletions

diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
index b585e04cbc9e..3178c3acd97e 100644
--- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
@@ -277,7 +277,6 @@ static struct cpufreq_driver p4clockmod_driver = {
         .name           = "p4-clockmod",
         .owner          = THIS_MODULE,
         .attr           = p4clockmod_attr,
-        .hide_interface = 1,
 };
 
 
diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 169a120587be..87b67e3a765a 100644
--- a/arch/x86/kernel/ds.c
+++ b/arch/x86/kernel/ds.c
@@ -729,7 +729,7 @@ struct pebs_tracer *ds_request_pebs(struct task_struct *task,
 
         spin_unlock_irqrestore(&ds_lock, irq);
 
-        ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_bts);
+        ds_write_config(tracer->ds.context, &tracer->trace.ds, ds_pebs);
         ds_resume_pebs(tracer);
 
         return tracer;
@@ -1029,5 +1029,4 @@ void ds_copy_thread(struct task_struct *tsk, struct task_struct *father)
 
 void ds_exit_thread(struct task_struct *tsk)
 {
-        WARN_ON(tsk->thread.ds_ctx);
 }
diff --git a/arch/x86/kernel/efi.c b/arch/x86/kernel/efi.c
index 1119d247fe11..eb1ef3b67dd5 100644
--- a/arch/x86/kernel/efi.c
+++ b/arch/x86/kernel/efi.c
@@ -467,7 +467,7 @@ void __init efi_enter_virtual_mode(void)
         efi_memory_desc_t *md;
         efi_status_t status;
         unsigned long size;
-        u64 end, systab, addr, npages;
+        u64 end, systab, addr, npages, end_pfn;
         void *p, *va;
 
         efi.systab = NULL;
@@ -479,7 +479,10 @@ void __init efi_enter_virtual_mode(void)
                 size = md->num_pages << EFI_PAGE_SHIFT;
                 end = md->phys_addr + size;
 
-                if (PFN_UP(end) <= max_low_pfn_mapped)
+                end_pfn = PFN_UP(end);
+                if (end_pfn <= max_low_pfn_mapped
+                    || (end_pfn > (1UL << (32 - PAGE_SHIFT))
+                        && end_pfn <= max_pfn_mapped))
                         va = __va(md->phys_addr);
                 else
                         va = efi_ioremap(md->phys_addr, size);
diff --git a/arch/x86/kernel/efi_64.c b/arch/x86/kernel/efi_64.c
index 652c5287215f..cb783b92c50c 100644
--- a/arch/x86/kernel/efi_64.c
+++ b/arch/x86/kernel/efi_64.c
@@ -99,24 +99,11 @@ void __init efi_call_phys_epilog(void)
 
 void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size)
 {
-        static unsigned pages_mapped __initdata;
-        unsigned i, pages;
-        unsigned long offset;
+        unsigned long last_map_pfn;
 
-        pages = PFN_UP(phys_addr + size) - PFN_DOWN(phys_addr);
-        offset = phys_addr & ~PAGE_MASK;
-        phys_addr &= PAGE_MASK;
-
-        if (pages_mapped + pages > MAX_EFI_IO_PAGES)
+        last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size);
+        if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size)
                 return NULL;
 
-        for (i = 0; i < pages; i++) {
-                __set_fixmap(FIX_EFI_IO_MAP_FIRST_PAGE - pages_mapped,
-                             phys_addr, PAGE_KERNEL);
-                phys_addr += PAGE_SIZE;
-                pages_mapped++;
-        }
-
-        return (void __iomem *)__fix_to_virt(FIX_EFI_IO_MAP_FIRST_PAGE - \
-                                             (pages_mapped - pages)) + offset;
+        return (void __iomem *)__va(phys_addr);
 }
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index b0f61f0dcd0a..f2f8540a7f3d 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -136,7 +136,7 @@ int init_fpu(struct task_struct *tsk)
 #ifdef CONFIG_X86_32
         if (!HAVE_HWFP) {
                 memset(tsk->thread.xstate, 0, xstate_size);
-                finit();
+                finit_task(tsk);
                 set_stopped_child_used_math(tsk);
                 return 0;
         }
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 2b46eb41643b..4526b3a75ed2 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -217,6 +217,14 @@ static struct dmi_system_id __initdata reboot_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq"),
                 },
         },
+        {       /* Handle problems with rebooting on Dell XPS710 */
+                .callback = set_bios_reboot,
+                .ident = "Dell XPS710",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Dell XPS710"),
+                },
+        },
         { }
 };
 
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index c461f6d69074..6a8811a69324 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -770,6 +770,9 @@ void __init setup_arch(char **cmdline_p)
 
         finish_e820_parsing();
 
+        if (efi_enabled)
+                efi_init();
+
         dmi_scan_machine();
 
         dmi_check_system(bad_bios_dmi_table);
@@ -789,8 +792,6 @@ void __init setup_arch(char **cmdline_p)
         insert_resource(&iomem_resource, &data_resource);
         insert_resource(&iomem_resource, &bss_resource);
 
-        if (efi_enabled)
-                efi_init();
 
 #ifdef CONFIG_X86_32
         if (ppro_with_ram_bug()) {