[git pull] x86 fixes

From: Ingo Molnar
Date: Thu Oct 30 2008 - 19:34:40 EST

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Linus,

Please pull the latest x86-fixes-for-linus git tree from:

git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git x86-fixes-for-linus

out-of-topic modifications in x86-fixes-for-linus:
--------------------------------------------------
.mailmap # 17c2297: mailmap: add Peter Oruba

Thanks,

Ingo

------------------>
Gary Hade (1):
x86: remove debug code from arch_add_memory()

Harvey Harrison (2):
x86: two trivial sparse annotations
x86: start annotating early ioremap pointers with __iomem

James Bottomley (5):
x86/voyager: fix boot breakage caused by x86: boot secondary cpus through initial_code
x86: use CONFIG_X86_SMP instead of CONFIG_SMP
x86/voyager: fix compile breakage casued by x86: move prefill_possible_map calling early
x86/voyager: fix compile breakage caused by dc1e35c6e95e8923cf1d3510438b63c600fee1e2
x86/voyager: fix missing cpu_index initialisation

Jan Beulich (1):
i386/PAE: fix pud_page()

Joerg Roedel (1):
x86, gart: fix gart detection for Fam11h CPUs

Ken'ichi Ohmichi (1):
x86, kdump: fix invalid access on i386 sparsemem

Markus Metzger (1):
x86, bts: improve help text for BTS config

Mike Travis (1):
x86, uv: fix compile error in uv_hub.h

Peter Oruba (3):
mailmap: add Peter Oruba
x86: microcode patch loader author update
x86: AMD microcode patch loader author update

Ravikiran G Thirumalai (1):
x86: fix /dev/mem mmap breakage when PAT is disabled

Uwe Hermann (1):
doc/x86: fix doc subdirs

Yinghai Lu (3):
x86: fix APIC_DEBUG with inquire_remote_apic
x86: 64 bit print out absent pages num too
x86: fix init_memory_mapping for [dc000000 - e0000000) - v2

.mailmap | 2 +
Documentation/00-INDEX | 4 +-
Documentation/kernel-parameters.txt | 12 ++--
Documentation/lguest/lguest.c | 2 +-
Documentation/x86/x86_64/boot-options.txt | 4 +-
Documentation/x86/x86_64/fake-numa-for-cpusets | 2 +-
arch/x86/Kconfig | 4 ++
arch/x86/Kconfig.cpu | 24 ++++----
arch/x86/include/asm/es7000/wakecpu.h | 9 ++--
arch/x86/include/asm/io.h | 6 +-
arch/x86/include/asm/mach-default/mach_wakecpu.h | 9 ++--
arch/x86/include/asm/pgtable-3level.h | 4 +-
arch/x86/include/asm/smp.h | 6 ++
arch/x86/include/asm/uv/uv_hub.h | 1 +
arch/x86/kernel/cpu/addon_cpuid_features.c | 2 +-
arch/x86/kernel/cpu/common.c | 4 +-
arch/x86/kernel/k8.c | 1 -
arch/x86/kernel/machine_kexec_32.c | 5 ++-
arch/x86/kernel/microcode_amd.c | 2 +-
arch/x86/kernel/microcode_core.c | 4 +-
arch/x86/kernel/pci-gart_64.c | 2 +-
arch/x86/kernel/tsc.c | 2 +-
arch/x86/kernel/vsmp_64.c | 2 +-
arch/x86/mach-voyager/voyager_smp.c | 12 ++++-
arch/x86/mm/gup.c | 2 +-
arch/x86/mm/init_64.c | 61 ++++++++++++++--------
arch/x86/mm/ioremap.c | 22 ++++----
arch/x86/mm/pat.c | 4 ++
28 files changed, 131 insertions(+), 83 deletions(-)

diff --git a/.mailmap b/.mailmap
index eba9bf9..97f7b4f 100644
--- a/.mailmap
+++ b/.mailmap
@@ -80,6 +80,8 @@ Nguyen Anh Quynh <aquynh@xxxxxxxxx>
Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Patrick Mochel <mochel@xxxxxxxxxxxxxxxxxx>
Peter A Jonsson <pj@xxxxxxxxxxx>
+Peter Oruba <peter@xxxxxxxx>
+Peter Oruba <peter.oruba@xxxxxxx>
Praveen BP <praveenbp@xxxxxx>
Rajesh Shah <rajesh.shah@xxxxxxxxx>
Ralf Baechle <ralf@xxxxxxxxxxxxxx>
diff --git a/Documentation/00-INDEX b/Documentation/00-INDEX
index 7286ad0..edef85c 100644
--- a/Documentation/00-INDEX
+++ b/Documentation/00-INDEX
@@ -172,7 +172,7 @@ i2c/
- directory with info about the I2C bus/protocol (2 wire, kHz speed).
i2o/
- directory with info about the Linux I2O subsystem.
-i386/
+x86/i386/
- directory with info about Linux on Intel 32 bit architecture.
ia64/
- directory with info about Linux on Intel 64 bit architecture.
@@ -382,7 +382,7 @@ w1/
- directory with documents regarding the 1-wire (w1) subsystem.
watchdog/
- how to auto-reboot Linux if it has "fallen and can't get up". ;-)
-x86_64/
+x86/x86_64/
- directory with info on Linux support for AMD x86-64 (Hammer) machines.
zorro.txt
- info on writing drivers for Zorro bus devices found on Amigas.
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 343e0f0..1bbcaa8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -100,7 +100,7 @@ parameter is applicable:
X86-32 X86-32, aka i386 architecture is enabled.
X86-64 X86-64 architecture is enabled.
More X86-64 boot options can be found in
- Documentation/x86_64/boot-options.txt .
+ Documentation/x86/x86_64/boot-options.txt .
X86 Either 32bit or 64bit x86 (same as X86-32+X86-64)

In addition, the following text indicates that the option:
@@ -112,10 +112,10 @@ In addition, the following text indicates that the option:
Parameters denoted with BOOT are actually interpreted by the boot
loader, and have no meaning to the kernel directly.
Do not modify the syntax of boot loader parameters without extreme
-need or coordination with <Documentation/i386/boot.txt>.
+need or coordination with <Documentation/x86/i386/boot.txt>.

There are also arch-specific kernel-parameters not documented here.
-See for example <Documentation/x86_64/boot-options.txt>.
+See for example <Documentation/x86/x86_64/boot-options.txt>.

Note that ALL kernel parameters listed below are CASE SENSITIVE, and that
a trailing = on the name of any parameter states that that parameter will
@@ -1222,7 +1222,7 @@ and is between 256 and 4096 characters. It is defined in the file

mce [X86-32] Machine Check Exception

- mce=option [X86-64] See Documentation/x86_64/boot-options.txt
+ mce=option [X86-64] See Documentation/x86/x86_64/boot-options.txt

md= [HW] RAID subsystems devices and level
See Documentation/md.txt.
@@ -1728,7 +1728,7 @@ and is between 256 and 4096 characters. It is defined in the file
See Documentation/paride.txt.

pirq= [SMP,APIC] Manual mp-table setup
- See Documentation/i386/IO-APIC.txt.
+ See Documentation/x86/i386/IO-APIC.txt.

plip= [PPT,NET] Parallel port network link
Format: { parport<nr> | timid | 0 }
@@ -2343,7 +2343,7 @@ and is between 256 and 4096 characters. It is defined in the file
See Documentation/fb/modedb.txt.

vga= [BOOT,X86-32] Select a particular video mode
- See Documentation/i386/boot.txt and
+ See Documentation/x86/i386/boot.txt and
Documentation/svga.txt.
Use vga=ask for menu.
This is actually a boot loader parameter; the value is
diff --git a/Documentation/lguest/lguest.c b/Documentation/lguest/lguest.c
index 7228369..da86fd5 100644
--- a/Documentation/lguest/lguest.c
+++ b/Documentation/lguest/lguest.c
@@ -402,7 +402,7 @@ static unsigned long load_bzimage(int fd)
void *p = from_guest_phys(0x100000);

/* Go back to the start of the file and read the header. It should be
- * a Linux boot header (see Documentation/i386/boot.txt) */
+ * a Linux boot header (see Documentation/x86/i386/boot.txt) */
lseek(fd, 0, SEEK_SET);
read(fd, &boot, sizeof(boot));

diff --git a/Documentation/x86/x86_64/boot-options.txt b/Documentation/x86/x86_64/boot-options.txt
index 72ffb53..f6d561a 100644
--- a/Documentation/x86/x86_64/boot-options.txt
+++ b/Documentation/x86/x86_64/boot-options.txt
@@ -35,7 +35,7 @@ APICs

nolapic Don't use the local APIC (alias for i386 compatibility)

- pirq=... See Documentation/i386/IO-APIC.txt
+ pirq=... See Documentation/x86/i386/IO-APIC.txt

noapictimer Don't set up the APIC timer

@@ -139,7 +139,7 @@ Non Executable Mappings
SMP

additional_cpus=NUM Allow NUM more CPUs for hotplug
- (defaults are specified by the BIOS, see Documentation/x86_64/cpu-hotplug-spec)
+ (defaults are specified by the BIOS, see Documentation/x86/x86_64/cpu-hotplug-spec)

NUMA

diff --git a/Documentation/x86/x86_64/fake-numa-for-cpusets b/Documentation/x86/x86_64/fake-numa-for-cpusets
index d1a985c..33bb566 100644
--- a/Documentation/x86/x86_64/fake-numa-for-cpusets
+++ b/Documentation/x86/x86_64/fake-numa-for-cpusets
@@ -10,7 +10,7 @@ amount of system memory that are available to a certain class of tasks.
For more information on the features of cpusets, see Documentation/cpusets.txt.
There are a number of different configurations you can use for your needs. For
more information on the numa=fake command line option and its various ways of
-configuring fake nodes, see Documentation/x86_64/boot-options.txt.
+configuring fake nodes, see Documentation/x86/x86_64/boot-options.txt.

For the purposes of this introduction, we'll assume a very primitive NUMA
emulation setup of "numa=fake=4*512,". This will split our system memory into
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 350bee1..2a40c4c 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -231,6 +231,10 @@ config SMP

If you don't know what to do here, say N.

+config X86_HAS_BOOT_CPU_ID
+ def_bool y
+ depends on X86_VOYAGER
+
config X86_FIND_SMP_CONFIG
def_bool y
depends on X86_MPPARSE || X86_VOYAGER
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 0b7c4a3..b815664 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -513,19 +513,19 @@ config CPU_SUP_UMC_32
If unsure, say N.

config X86_DS
- bool "Debug Store support"
- default y
- help
- Add support for Debug Store.
- This allows the kernel to provide a memory buffer to the hardware
- to store various profiling and tracing events.
+ def_bool X86_PTRACE_BTS
+ depends on X86_DEBUGCTLMSR

config X86_PTRACE_BTS
- bool "ptrace interface to Branch Trace Store"
+ bool "Branch Trace Store"
default y
- depends on (X86_DS && X86_DEBUGCTLMSR)
+ depends on X86_DEBUGCTLMSR
help
- Add a ptrace interface to allow collecting an execution trace
- of the traced task.
- This collects control flow changes in a (cyclic) buffer and allows
- debuggers to fill in the gaps and show an execution trace of the debuggee.
+ This adds a ptrace interface to the hardware's branch trace store.
+
+ Debuggers may use it to collect an execution trace of the debugged
+ application in order to answer the question 'how did I get here?'.
+ Debuggers may trace user mode as well as kernel mode.
+
+ Say Y unless there is no application development on this machine
+ and you want to save a small amount of code size.
diff --git a/arch/x86/include/asm/es7000/wakecpu.h b/arch/x86/include/asm/es7000/wakecpu.h
index 3ffc5a7..3984934 100644
--- a/arch/x86/include/asm/es7000/wakecpu.h
+++ b/arch/x86/include/asm/es7000/wakecpu.h
@@ -50,10 +50,9 @@ static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
{
}

-#if APIC_DEBUG
- #define inquire_remote_apic(apicid) __inquire_remote_apic(apicid)
-#else
- #define inquire_remote_apic(apicid) {}
-#endif
+#define inquire_remote_apic(apicid) do { \
+ if (apic_verbosity >= APIC_DEBUG) \
+ __inquire_remote_apic(apicid); \
+ } while (0)

#endif /* __ASM_MACH_WAKECPU_H */
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 5618a10..ac2abc8 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -82,9 +82,9 @@ extern void __iomem *ioremap_wc(unsigned long offset, unsigned long size);
extern void early_ioremap_init(void);
extern void early_ioremap_clear(void);
extern void early_ioremap_reset(void);
-extern void *early_ioremap(unsigned long offset, unsigned long size);
-extern void *early_memremap(unsigned long offset, unsigned long size);
-extern void early_iounmap(void *addr, unsigned long size);
+extern void __iomem *early_ioremap(unsigned long offset, unsigned long size);
+extern void __iomem *early_memremap(unsigned long offset, unsigned long size);
+extern void early_iounmap(void __iomem *addr, unsigned long size);
extern void __iomem *fix_ioremap(unsigned idx, unsigned long phys);

diff --git a/arch/x86/include/asm/mach-default/mach_wakecpu.h b/arch/x86/include/asm/mach-default/mach_wakecpu.h
index d5c0b82..9d80db9 100644
--- a/arch/x86/include/asm/mach-default/mach_wakecpu.h
+++ b/arch/x86/include/asm/mach-default/mach_wakecpu.h
@@ -33,10 +33,9 @@ static inline void restore_NMI_vector(unsigned short *high, unsigned short *low)
{
}

-#if APIC_DEBUG
- #define inquire_remote_apic(apicid) __inquire_remote_apic(apicid)
-#else
- #define inquire_remote_apic(apicid) {}
-#endif
+#define inquire_remote_apic(apicid) do { \
+ if (apic_verbosity >= APIC_DEBUG) \
+ __inquire_remote_apic(apicid); \
+ } while (0)

#endif /* _ASM_X86_MACH_DEFAULT_MACH_WAKECPU_H */
diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h
index fb16cec..52597ae 100644
--- a/arch/x86/include/asm/pgtable-3level.h
+++ b/arch/x86/include/asm/pgtable-3level.h
@@ -120,13 +120,13 @@ static inline void pud_clear(pud_t *pudp)
write_cr3(pgd);
}

-#define pud_page(pud) ((struct page *) __va(pud_val(pud) & PTE_PFN_MASK))
+#define pud_page(pud) pfn_to_page(pud_val(pud) >> PAGE_SHIFT)

#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PTE_PFN_MASK))

/* Find an entry in the second-level page table.. */
-#define pmd_offset(pud, address) ((pmd_t *)pud_page(*(pud)) + \
+#define pmd_offset(pud, address) ((pmd_t *)pud_page_vaddr(*(pud)) + \
pmd_index(address))

#ifdef CONFIG_SMP
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index 2766021..d12811c 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -225,5 +225,11 @@ static inline int hard_smp_processor_id(void)

#endif /* CONFIG_X86_LOCAL_APIC */

+#ifdef CONFIG_X86_HAS_BOOT_CPU_ID
+extern unsigned char boot_cpu_id;
+#else
+#define boot_cpu_id 0
+#endif
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_X86_SMP_H */
diff --git a/arch/x86/include/asm/uv/uv_hub.h b/arch/x86/include/asm/uv/uv_hub.h
index c6ad93e..7a57826 100644
--- a/arch/x86/include/asm/uv/uv_hub.h
+++ b/arch/x86/include/asm/uv/uv_hub.h
@@ -13,6 +13,7 @@

#include <linux/numa.h>
#include <linux/percpu.h>
+#include <linux/timer.h>
#include <asm/types.h>
#include <asm/percpu.h>

diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c
index 0d9c993..ef8f831 100644
--- a/arch/x86/kernel/cpu/addon_cpuid_features.c
+++ b/arch/x86/kernel/cpu/addon_cpuid_features.c
@@ -69,7 +69,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
*/
void __cpuinit detect_extended_topology(struct cpuinfo_x86 *c)
{
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_SMP
unsigned int eax, ebx, ecx, edx, sub_index;
unsigned int ht_mask_width, core_plus_mask_width;
unsigned int core_select_mask, core_level_siblings;
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 25581dc..da8f15a 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -549,6 +549,8 @@ static void __init early_identify_cpu(struct cpuinfo_x86 *c)
this_cpu->c_early_init(c);

validate_pat_support(c);
+
+ c->cpu_index = boot_cpu_id;
}

void __init early_cpu_init(void)
@@ -1134,7 +1136,7 @@ void __cpuinit cpu_init(void)
/*
* Boot processor to setup the FP and extended state context info.
*/
- if (!smp_processor_id())
+ if (smp_processor_id() == boot_cpu_id)
init_thread_xstate();

xsave_init();
diff --git a/arch/x86/kernel/k8.c b/arch/x86/kernel/k8.c
index 304d8ba..cbc4332 100644
--- a/arch/x86/kernel/k8.c
+++ b/arch/x86/kernel/k8.c
@@ -18,7 +18,6 @@ static u32 *flush_words;
struct pci_device_id k8_nb_ids[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB_MISC) },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_10H_NB_MISC) },
- { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_11H_NB_MISC) },
{}
};
EXPORT_SYMBOL(k8_nb_ids);
diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
index 0732adb..7a38574 100644
--- a/arch/x86/kernel/machine_kexec_32.c
+++ b/arch/x86/kernel/machine_kexec_32.c
@@ -162,7 +162,10 @@ void machine_kexec(struct kimage *image)
page_list[VA_PTE_0] = (unsigned long)kexec_pte0;
page_list[PA_PTE_1] = __pa(kexec_pte1);
page_list[VA_PTE_1] = (unsigned long)kexec_pte1;
- page_list[PA_SWAP_PAGE] = (page_to_pfn(image->swap_page) << PAGE_SHIFT);
+
+ if (image->type == KEXEC_TYPE_DEFAULT)
+ page_list[PA_SWAP_PAGE] = (page_to_pfn(image->swap_page)
+ << PAGE_SHIFT);

/* The segment registers are funny things, they have both a
* visible and an invisible part. Whenever the visible part is
diff --git a/arch/x86/kernel/microcode_amd.c b/arch/x86/kernel/microcode_amd.c
index 7a1f8ee..5f8e5d7 100644
--- a/arch/x86/kernel/microcode_amd.c
+++ b/arch/x86/kernel/microcode_amd.c
@@ -39,7 +39,7 @@
#include <asm/microcode.h>

MODULE_DESCRIPTION("AMD Microcode Update Driver");
-MODULE_AUTHOR("Peter Oruba <peter.oruba@xxxxxxx>");
+MODULE_AUTHOR("Peter Oruba");
MODULE_LICENSE("GPL v2");

#define UCODE_MAGIC 0x00414d44
diff --git a/arch/x86/kernel/microcode_core.c b/arch/x86/kernel/microcode_core.c
index 936d8d5..82fb280 100644
--- a/arch/x86/kernel/microcode_core.c
+++ b/arch/x86/kernel/microcode_core.c
@@ -480,8 +480,8 @@ static int __init microcode_init(void)

printk(KERN_INFO
"Microcode Update Driver: v" MICROCODE_VERSION
- " <tigran@xxxxxxxxxxxxxxxxxxxx>"
- " <peter.oruba@xxxxxxx>\n");
+ " <tigran@xxxxxxxxxxxxxxxxxxxx>,"
+ " Peter Oruba\n");

return 0;
}
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index e3f75bb..a42b02b 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -744,7 +744,7 @@ void __init gart_iommu_init(void)
long i;

if (cache_k8_northbridges() < 0 || num_k8_northbridges == 0) {
- printk(KERN_INFO "PCI-GART: No AMD northbridge found.\n");
+ printk(KERN_INFO "PCI-GART: No AMD GART found.\n");
return;
}

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 161bb85..62348e4 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -759,7 +759,7 @@ __cpuinit int unsynchronized_tsc(void)
if (!cpu_has_tsc || tsc_unstable)
return 1;

-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_SMP
if (apic_is_clustered_box())
return 1;
#endif
diff --git a/arch/x86/kernel/vsmp_64.c b/arch/x86/kernel/vsmp_64.c
index 7766d36..a688f3b 100644
--- a/arch/x86/kernel/vsmp_64.c
+++ b/arch/x86/kernel/vsmp_64.c
@@ -78,7 +78,7 @@ static unsigned __init_or_module vsmp_patch(u8 type, u16 clobbers, void *ibuf,

static void __init set_vsmp_pv_ops(void)
{
- void *address;
+ void __iomem *address;
unsigned int cap, ctl, cfg;

/* set vSMP magic bits to indicate vSMP capable kernel */
diff --git a/arch/x86/mach-voyager/voyager_smp.c b/arch/x86/mach-voyager/voyager_smp.c
index 0f6e8a6..7f4c6af 100644
--- a/arch/x86/mach-voyager/voyager_smp.c
+++ b/arch/x86/mach-voyager/voyager_smp.c
@@ -90,6 +90,7 @@ static void ack_vic_irq(unsigned int irq);
static void vic_enable_cpi(void);
static void do_boot_cpu(__u8 cpuid);
static void do_quad_bootstrap(void);
+static void initialize_secondary(void);

int hard_smp_processor_id(void);
int safe_smp_processor_id(void);
@@ -344,6 +345,12 @@ static void do_quad_bootstrap(void)
}
}

+void prefill_possible_map(void)
+{
+ /* This is empty on voyager because we need a much
+ * earlier detection which is done in find_smp_config */
+}
+
/* Set up all the basic stuff: read the SMP config and make all the
* SMP information reflect only the boot cpu. All others will be
* brought on-line later. */
@@ -413,6 +420,7 @@ void __init smp_store_cpu_info(int id)
struct cpuinfo_x86 *c = &cpu_data(id);

*c = boot_cpu_data;
+ c->cpu_index = id;

identify_secondary_cpu(c);
}
@@ -650,6 +658,8 @@ void __init smp_boot_cpus(void)
smp_tune_scheduling();
*/
smp_store_cpu_info(boot_cpu_id);
+ /* setup the jump vector */
+ initial_code = (unsigned long)initialize_secondary;
printk("CPU%d: ", boot_cpu_id);
print_cpu_info(&cpu_data(boot_cpu_id));

@@ -702,7 +712,7 @@ void __init smp_boot_cpus(void)

/* Reload the secondary CPUs task structure (this function does not
* return ) */
-void __init initialize_secondary(void)
+static void __init initialize_secondary(void)
{
#if 0
// AC kernels only
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 4ba373c..be54176 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -233,7 +233,7 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
len = (unsigned long) nr_pages << PAGE_SHIFT;
end = start + len;
if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
- start, len)))
+ (void __user *)start, len)))
goto slow_irqon;

/*
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index f79a02f..9db01db 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -671,12 +671,13 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,
unsigned long last_map_addr = 0;
unsigned long page_size_mask = 0;
unsigned long start_pfn, end_pfn;
+ unsigned long pos;

struct map_range mr[NR_RANGE_MR];
int nr_range, i;
int use_pse, use_gbpages;

- printk(KERN_INFO "init_memory_mapping\n");
+ printk(KERN_INFO "init_memory_mapping: %016lx-%016lx\n", start, end);

/*
* Find space for the kernel direct mapping tables.
@@ -710,35 +711,50 @@ unsigned long __init_refok init_memory_mapping(unsigned long start,

/* head if not big page alignment ?*/
start_pfn = start >> PAGE_SHIFT;
- end_pfn = ((start + (PMD_SIZE - 1)) >> PMD_SHIFT)
+ pos = start_pfn << PAGE_SHIFT;
+ end_pfn = ((pos + (PMD_SIZE - 1)) >> PMD_SHIFT)
<< (PMD_SHIFT - PAGE_SHIFT);
- nr_range = save_mr(mr, nr_range, start_pfn, end_pfn, 0);
+ if (start_pfn < end_pfn) {
+ nr_range = save_mr(mr, nr_range, start_pfn, end_pfn, 0);
+ pos = end_pfn << PAGE_SHIFT;
+ }

/* big page (2M) range*/
- start_pfn = ((start + (PMD_SIZE - 1))>>PMD_SHIFT)
+ start_pfn = ((pos + (PMD_SIZE - 1))>>PMD_SHIFT)
<< (PMD_SHIFT - PAGE_SHIFT);
- end_pfn = ((start + (PUD_SIZE - 1))>>PUD_SHIFT)
+ end_pfn = ((pos + (PUD_SIZE - 1))>>PUD_SHIFT)
<< (PUD_SHIFT - PAGE_SHIFT);
- if (end_pfn > ((end>>PUD_SHIFT)<<(PUD_SHIFT - PAGE_SHIFT)))
- end_pfn = ((end>>PUD_SHIFT)<<(PUD_SHIFT - PAGE_SHIFT));
- nr_range = save_mr(mr, nr_range, start_pfn, end_pfn,
- page_size_mask & (1<<PG_LEVEL_2M));
+ if (end_pfn > ((end>>PMD_SHIFT)<<(PMD_SHIFT - PAGE_SHIFT)))
+ end_pfn = ((end>>PMD_SHIFT)<<(PMD_SHIFT - PAGE_SHIFT));
+ if (start_pfn < end_pfn) {
+ nr_range = save_mr(mr, nr_range, start_pfn, end_pfn,
+ page_size_mask & (1<<PG_LEVEL_2M));
+ pos = end_pfn << PAGE_SHIFT;
+ }

/* big page (1G) range */
- start_pfn = end_pfn;
- end_pfn = (end>>PUD_SHIFT) << (PUD_SHIFT - PAGE_SHIFT);
- nr_range = save_mr(mr, nr_range, start_pfn, end_pfn,
+ start_pfn = ((pos + (PUD_SIZE - 1))>>PUD_SHIFT)
+ << (PUD_SHIFT - PAGE_SHIFT);
+ end_pfn = (end >> PUD_SHIFT) << (PUD_SHIFT - PAGE_SHIFT);
+ if (start_pfn < end_pfn) {
+ nr_range = save_mr(mr, nr_range, start_pfn, end_pfn,
page_size_mask &
((1<<PG_LEVEL_2M)|(1<<PG_LEVEL_1G)));
+ pos = end_pfn << PAGE_SHIFT;
+ }

/* tail is not big page (1G) alignment */
- start_pfn = end_pfn;
- end_pfn = (end>>PMD_SHIFT) << (PMD_SHIFT - PAGE_SHIFT);
- nr_range = save_mr(mr, nr_range, start_pfn, end_pfn,
- page_size_mask & (1<<PG_LEVEL_2M));
+ start_pfn = ((pos + (PMD_SIZE - 1))>>PMD_SHIFT)
+ << (PMD_SHIFT - PAGE_SHIFT);
+ end_pfn = (end >> PMD_SHIFT) << (PMD_SHIFT - PAGE_SHIFT);
+ if (start_pfn < end_pfn) {
+ nr_range = save_mr(mr, nr_range, start_pfn, end_pfn,
+ page_size_mask & (1<<PG_LEVEL_2M));
+ pos = end_pfn << PAGE_SHIFT;
+ }

/* tail is not big page (2M) alignment */
- start_pfn = end_pfn;
+ start_pfn = pos>>PAGE_SHIFT;
end_pfn = end>>PAGE_SHIFT;
nr_range = save_mr(mr, nr_range, start_pfn, end_pfn, 0);

@@ -842,7 +858,7 @@ int arch_add_memory(int nid, u64 start, u64 size)
max_pfn_mapped = last_mapped_pfn;

ret = __add_pages(zone, start_pfn, nr_pages);
- WARN_ON(1);
+ WARN_ON_ONCE(ret);

return ret;
}
@@ -884,6 +900,7 @@ static struct kcore_list kcore_mem, kcore_vmalloc, kcore_kernel,
void __init mem_init(void)
{
long codesize, reservedpages, datasize, initsize;
+ unsigned long absent_pages;

start_periodic_check_for_corruption();

@@ -899,8 +916,9 @@ void __init mem_init(void)
#else
totalram_pages = free_all_bootmem();
#endif
- reservedpages = max_pfn - totalram_pages -
- absent_pages_in_range(0, max_pfn);
+
+ absent_pages = absent_pages_in_range(0, max_pfn);
+ reservedpages = max_pfn - totalram_pages - absent_pages;
after_bootmem = 1;

codesize = (unsigned long) &_etext - (unsigned long) &_text;
@@ -917,10 +935,11 @@ void __init mem_init(void)
VSYSCALL_END - VSYSCALL_START);

printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
- "%ldk reserved, %ldk data, %ldk init)\n",
+ "%ldk absent, %ldk reserved, %ldk data, %ldk init)\n",
(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
max_pfn << (PAGE_SHIFT-10),
codesize >> 10,
+ absent_pages << (PAGE_SHIFT-10),
reservedpages << (PAGE_SHIFT-10),
datasize >> 10,
initsize >> 10);
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index ae71e11..d4c4307 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -387,7 +387,7 @@ static void __iomem *ioremap_default(resource_size_t phys_addr,
unsigned long size)
{
unsigned long flags;
- void *ret;
+ void __iomem *ret;
int err;

/*
@@ -399,11 +399,11 @@ static void __iomem *ioremap_default(resource_size_t phys_addr,
if (err < 0)
return NULL;

- ret = (void *) __ioremap_caller(phys_addr, size, flags,
- __builtin_return_address(0));
+ ret = __ioremap_caller(phys_addr, size, flags,
+ __builtin_return_address(0));

free_memtype(phys_addr, phys_addr + size);
- return (void __iomem *)ret;
+ return ret;
}

void __iomem *ioremap_prot(resource_size_t phys_addr, unsigned long size,
@@ -622,7 +622,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
__early_set_fixmap(idx, 0, __pgprot(0));
}

-static void *prev_map[FIX_BTMAPS_SLOTS] __initdata;
+static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
static int __init check_early_ioremap_leak(void)
{
@@ -645,7 +645,7 @@ static int __init check_early_ioremap_leak(void)
}
late_initcall(check_early_ioremap_leak);

-static void __init *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
+static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
{
unsigned long offset, last_addr;
unsigned int nrpages;
@@ -713,23 +713,23 @@ static void __init *__early_ioremap(unsigned long phys_addr, unsigned long size,
if (early_ioremap_debug)
printk(KERN_CONT "%08lx + %08lx\n", offset, fix_to_virt(idx0));

- prev_map[slot] = (void *) (offset + fix_to_virt(idx0));
+ prev_map[slot] = (void __iomem *)(offset + fix_to_virt(idx0));
return prev_map[slot];
}

/* Remap an IO device */
-void __init *early_ioremap(unsigned long phys_addr, unsigned long size)
+void __init __iomem *early_ioremap(unsigned long phys_addr, unsigned long size)
{
return __early_ioremap(phys_addr, size, PAGE_KERNEL_IO);
}

/* Remap memory */
-void __init *early_memremap(unsigned long phys_addr, unsigned long size)
+void __init __iomem *early_memremap(unsigned long phys_addr, unsigned long size)
{
return __early_ioremap(phys_addr, size, PAGE_KERNEL);
}

-void __init early_iounmap(void *addr, unsigned long size)
+void __init early_iounmap(void __iomem *addr, unsigned long size)
{
unsigned long virt_addr;
unsigned long offset;
@@ -779,7 +779,7 @@ void __init early_iounmap(void *addr, unsigned long size)
--idx;
--nrpages;
}
- prev_map[slot] = 0;
+ prev_map[slot] = NULL;
}

void __this_fixmap_does_not_exist(void)
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 738fd0f..eb1bf00 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -481,12 +481,16 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
return 1;
}
#else
+/* This check is needed to avoid cache aliasing when PAT is enabled */
static inline int range_is_allowed(unsigned long pfn, unsigned long size)
{
u64 from = ((u64)pfn) << PAGE_SHIFT;
u64 to = from + size;
u64 cursor = from;

+ if (!pat_enabled)
+ return 1;
+
while (cursor < to) {
if (!devmem_is_allowed(pfn)) {
printk(KERN_INFO

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