Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, pebs: correct qualifier passed to ds_write_config() from ds_request_pebs()
  x86, bts: remove bad warning
  x86: add Dell XPS710 reboot quirk
  x86, math-emu: fix init_fpu for task != current
  x86: EFI: Back efi_ioremap with init_memory_mapping instead of FIX_MAP
  x86: fix DMI on EFI

diff --git a/arch/x86/include/asm/efi.h b/arch/x86/include/asm/efi.h
index ca5ffb2..edc90f2 100644 (file)
--- a/arch/x86/include/asm/efi.h
+++ b/arch/x86/include/asm/efi.h
@@ -37,8 +37,6 @@ extern unsigned long asmlinkage efi_call_phys(void *, ...);
 
 #else /* !CONFIG_X86_32 */
 
-#define MAX_EFI_IO_PAGES       100
-
 extern u64 efi_call0(void *fp);
 extern u64 efi_call1(void *fp, u64 arg1);
 extern u64 efi_call2(void *fp, u64 arg1, u64 arg2);

diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
index 00a30ab..8be7409 100644 (file)
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -16,7 +16,6 @@
 #include <asm/apicdef.h>
 #include <asm/page.h>
 #include <asm/vsyscall.h>
-#include <asm/efi.h>
 
 /*
  * Here we define all the compile-time 'special' virtual
@@ -43,9 +42,6 @@ enum fixed_addresses {
        FIX_APIC_BASE,  /* local (CPU) APIC) -- required for SMP or not */
        FIX_IO_APIC_BASE_0,
        FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
-       FIX_EFI_IO_MAP_LAST_PAGE,
-       FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE
-                                 + MAX_EFI_IO_PAGES - 1,
 #ifdef CONFIG_PARAVIRT
        FIX_PARAVIRT_BOOTMAP,
 #endif

diff --git a/arch/x86/include/asm/i387.h b/arch/x86/include/asm/i387.h
index 48f0004..71c9e51 100644 (file)
--- a/arch/x86/include/asm/i387.h
+++ b/arch/x86/include/asm/i387.h
@@ -172,7 +172,13 @@ static inline void __save_init_fpu(struct task_struct *tsk)
 
 #else  /* CONFIG_X86_32 */
 
-extern void finit(void);
+#ifdef CONFIG_MATH_EMULATION
+extern void finit_task(struct task_struct *tsk);
+#else
+static inline void finit_task(struct task_struct *tsk)
+{
+}
+#endif
 
 static inline void tolerant_fwait(void)
 {

diff --git a/arch/x86/kernel/ds.c b/arch/x86/kernel/ds.c
index 169a120..87b67e3 100644 (file)
--- 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 1119d24..eb1ef3b 100644 (file)
--- 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 652c528..cb783b9 100644 (file)
--- 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 b0f61f0..f2f8540 100644 (file)
--- 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 2b46eb4..4526b3a 100644 (file)
--- 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 c461f6d..6a8811a 100644 (file)
--- 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()) {

diff --git a/arch/x86/math-emu/fpu_aux.c b/arch/x86/math-emu/fpu_aux.c
index 491e737..aa09870 100644 (file)
--- a/arch/x86/math-emu/fpu_aux.c
+++ b/arch/x86/math-emu/fpu_aux.c
@@ -30,20 +30,29 @@ static void fclex(void)
 }
 
 /* Needs to be externally visible */
-void finit(void)
+void finit_task(struct task_struct *tsk)
 {
-       control_word = 0x037f;
-       partial_status = 0;
-       top = 0;                /* We don't keep top in the status word internally. */
-       fpu_tag_word = 0xffff;
+       struct i387_soft_struct *soft = &tsk->thread.xstate->soft;
+       struct address *oaddr, *iaddr;
+       soft->cwd = 0x037f;
+       soft->swd = 0;
+       soft->ftop = 0; /* We don't keep top in the status word internally. */
+       soft->twd = 0xffff;
        /* The behaviour is different from that detailed in
           Section 15.1.6 of the Intel manual */
-       operand_address.offset = 0;
-       operand_address.selector = 0;
-       instruction_address.offset = 0;
-       instruction_address.selector = 0;
-       instruction_address.opcode = 0;
-       no_ip_update = 1;
+       oaddr = (struct address *)&soft->foo;
+       oaddr->offset = 0;
+       oaddr->selector = 0;
+       iaddr = (struct address *)&soft->fip;
+       iaddr->offset = 0;
+       iaddr->selector = 0;
+       iaddr->opcode = 0;
+       soft->no_update = 1;
+}
+
+void finit(void)
+{
+       finit_task(current);
 }
 
 /*