[Git pull] x86 update
From: Thomas Gleixner
Date: Mon Oct 29 2007 - 19:49:27 EST
Linus,
please pull from:
ssh://master.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git
a couple of cleanups and bugfixes along with a compile/runtime
irrelevant doc change.
The iommu.h -> gart.h rename needs to go in before we have the
namespace polution all over the place.
Thanks,
tglx
Adrian Bunk (4):
x86: kernel/setup_32.c: unexport machine_id
x86: mm/discontig_32.c: make code static
x86: merge EARLY_PRINTK options
remove the dead X86_REMOTE_DEBUG option
H. Peter Anvin (1):
x86: additional CPUID strings; fix strings for AMD-ecx
Huang, Ying (1):
x86 boot: document for 32 bit boot protocol
Joerg Roedel (4):
x86 gart: rename iommu.h to gart.h
x86 gart: rename CONFIG_IOMMU to CONFIG_GART_IOMMU
x86 gart: make some variables and functions static
x86 gart: rename symbols only used for the GART implementation
Documentation/i386/boot.txt | 38 ++++++++++++
Documentation/i386/zero-page.txt | 122 ++++++++----------------------------
arch/x86/Kconfig.debug | 8 +--
arch/x86/Kconfig.x86_64 | 10 +--
arch/x86/configs/x86_64_defconfig | 2 +-
arch/x86/kernel/Makefile_64 | 2 +-
arch/x86/kernel/aperture_64.c | 15 +++--
arch/x86/kernel/cpu/proc.c | 10 ++--
arch/x86/kernel/early-quirks.c | 10 ++--
arch/x86/kernel/pci-calgary_64.c | 2 +-
arch/x86/kernel/pci-dma_64.c | 10 ++--
arch/x86/kernel/pci-gart_64.c | 18 +++---
arch/x86/kernel/pci-nommu_64.c | 2 +-
arch/x86/kernel/pci-swiotlb_64.c | 2 +-
arch/x86/kernel/reboot_64.c | 2 +-
arch/x86/kernel/setup_32.c | 3 -
arch/x86/kernel/setup_64.c | 10 ++--
arch/x86/mm/discontig_32.c | 4 +-
drivers/char/agp/Kconfig | 4 +-
drivers/char/agp/amd64-agp.c | 2 +-
drivers/pci/intel-iommu.c | 2 +-
drivers/usb/core/message.c | 2 +-
include/asm-x86/gart.h | 29 +++++++++
include/asm-x86/iommu.h | 4 +-
include/asm-x86/pci_64.h | 2 +-
25 files changed, 152 insertions(+), 163 deletions(-)
create mode 100644 include/asm-x86/gart.h
diff --git a/Documentation/i386/boot.txt b/Documentation/i386/boot.txt
index 2f75e75..fc49b79 100644
--- a/Documentation/i386/boot.txt
+++ b/Documentation/i386/boot.txt
@@ -785,3 +785,41 @@ IMPORTANT: All the hooks are required to preserve %esp, %ebp, %esi and
After completing your hook, you should jump to the address
that was in this field before your boot loader overwrote it
(relocated, if appropriate.)
+
+
+**** 32-bit BOOT PROTOCOL
+
+For machine with some new BIOS other than legacy BIOS, such as EFI,
+LinuxBIOS, etc, and kexec, the 16-bit real mode setup code in kernel
+based on legacy BIOS can not be used, so a 32-bit boot protocol needs
+to be defined.
+
+In 32-bit boot protocol, the first step in loading a Linux kernel
+should be to setup the boot parameters (struct boot_params,
+traditionally known as "zero page"). The memory for struct boot_params
+should be allocated and initialized to all zero. Then the setup header
+from offset 0x01f1 of kernel image on should be loaded into struct
+boot_params and examined. The end of setup header can be calculated as
+follow:
+
+ 0x0202 + byte value at offset 0x0201
+
+In addition to read/modify/write the setup header of the struct
+boot_params as that of 16-bit boot protocol, the boot loader should
+also fill the additional fields of the struct boot_params as that
+described in zero-page.txt.
+
+After setupping the struct boot_params, the boot loader can load the
+32/64-bit kernel in the same way as that of 16-bit boot protocol.
+
+In 32-bit boot protocol, the kernel is started by jumping to the
+32-bit kernel entry point, which is the start address of loaded
+32/64-bit kernel.
+
+At entry, the CPU must be in 32-bit protected mode with paging
+disabled; a GDT must be loaded with the descriptors for selectors
+__BOOT_CS(0x10) and __BOOT_DS(0x18); both descriptors must be 4G flat
+segment; __BOOS_CS must have execute/read permission, and __BOOT_DS
+must have read/write permission; CS must be __BOOT_CS and DS, ES, SS
+must be __BOOT_DS; interrupt must be disabled; %esi must hold the base
+address of the struct boot_params; %ebp, %edi and %ebx must be zero.
diff --git a/Documentation/i386/zero-page.txt b/Documentation/i386/zero-page.txt
index 6c0817c..169ad42 100644
--- a/Documentation/i386/zero-page.txt
+++ b/Documentation/i386/zero-page.txt
@@ -1,99 +1,31 @@
----------------------------------------------------------------------------
-!!!!!!!!!!!!!!!WARNING!!!!!!!!
-The zero page is a kernel internal data structure, not a stable ABI. It might change
-without warning and the kernel has no way to detect old version of it.
-If you're writing some external code like a boot loader you should only use
-the stable versioned real mode boot protocol described in boot.txt. Otherwise the kernel
-might break you at any time.
-!!!!!!!!!!!!!WARNING!!!!!!!!!!!
-----------------------------------------------------------------------------
+The additional fields in struct boot_params as a part of 32-bit boot
+protocol of kernel. These should be filled by bootloader or 16-bit
+real-mode setup code of the kernel. References/settings to it mainly
+are in:
-Summary of boot_params layout (kernel point of view)
- ( collected by Hans Lermen and Martin Mares )
-
-The contents of boot_params are used to pass parameters from the
-16-bit realmode code of the kernel to the 32-bit part. References/settings
-to it mainly are in:
+ include/asm-x86/bootparam.h
- arch/i386/boot/setup.S
- arch/i386/boot/video.S
- arch/i386/kernel/head.S
- arch/i386/kernel/setup.c
-
-Offset Type Description
------- ---- -----------
- 0 32 bytes struct screen_info, SCREEN_INFO
- ATTENTION, overlaps the following !!!
- 2 unsigned short EXT_MEM_K, extended memory size in Kb (from int 0x15)
- 0x20 unsigned short CL_MAGIC, commandline magic number (=0xA33F)
- 0x22 unsigned short CL_OFFSET, commandline offset
- Address of commandline is calculated:
- 0x90000 + contents of CL_OFFSET
- (only taken, when CL_MAGIC = 0xA33F)
- 0x40 20 bytes struct apm_bios_info, APM_BIOS_INFO
- 0x60 16 bytes Intel SpeedStep (IST) BIOS support information
- 0x80 16 bytes hd0-disk-parameter from intvector 0x41
- 0x90 16 bytes hd1-disk-parameter from intvector 0x46
+Offset Proto Name Meaning
+/Size
- 0xa0 16 bytes System description table truncated to 16 bytes.
- ( struct sys_desc_table_struct )
- 0xb0 - 0x13f Free. Add more parameters here if you really need them.
- 0x140- 0x1be EDID_INFO Video mode setup
-
-0x1c4 unsigned long EFI system table pointer
-0x1c8 unsigned long EFI memory descriptor size
-0x1cc unsigned long EFI memory descriptor version
-0x1d0 unsigned long EFI memory descriptor map pointer
-0x1d4 unsigned long EFI memory descriptor map size
-0x1e0 unsigned long ALT_MEM_K, alternative mem check, in Kb
-0x1e4 unsigned long Scratch field for the kernel setup code
-0x1e8 char number of entries in E820MAP (below)
-0x1e9 unsigned char number of entries in EDDBUF (below)
-0x1ea unsigned char number of entries in EDD_MBR_SIG_BUFFER (below)
-0x1f1 char size of setup.S, number of sectors
-0x1f2 unsigned short MOUNT_ROOT_RDONLY (if !=0)
-0x1f4 unsigned short size of compressed kernel-part in the
- (b)zImage-file (in 16 byte units, rounded up)
-0x1f6 unsigned short swap_dev (unused AFAIK)
-0x1f8 unsigned short RAMDISK_FLAGS
-0x1fa unsigned short VGA-Mode (old one)
-0x1fc unsigned short ORIG_ROOT_DEV (high=Major, low=minor)
-0x1ff char AUX_DEVICE_INFO
-
-0x200 short jump to start of setup code aka "reserved" field.
-0x202 4 bytes Signature for SETUP-header, ="HdrS"
-0x206 unsigned short Version number of header format
- Current version is 0x0201...
-0x208 8 bytes (used by setup.S for communication with boot loaders,
- look there)
-0x210 char LOADER_TYPE, = 0, old one
- else it is set by the loader:
- 0xTV: T=0 for LILO
- 1 for Loadlin
- 2 for bootsect-loader
- 3 for SYSLINUX
- 4 for ETHERBOOT
- 5 for ELILO
- 7 for GRuB
- 8 for U-BOOT
- 9 for Xen
- V = version
-0x211 char loadflags:
- bit0 = 1: kernel is loaded high (bzImage)
- bit7 = 1: Heap and pointer (see below) set by boot
- loader.
-0x212 unsigned short (setup.S)
-0x214 unsigned long KERNEL_START, where the loader started the kernel
-0x218 unsigned long INITRD_START, address of loaded ramdisk image
-0x21c unsigned long INITRD_SIZE, size in bytes of ramdisk image
-0x220 4 bytes (setup.S)
-0x224 unsigned short setup.S heap end pointer
-0x226 unsigned short zero_pad
-0x228 unsigned long cmd_line_ptr
-0x22c unsigned long ramdisk_max
-0x230 16 bytes trampoline
-0x290 - 0x2cf EDD_MBR_SIG_BUFFER (edd.S)
-0x2d0 - 0xd00 E820MAP
-0xd00 - 0xeff EDDBUF (edd.S) for disk signature read sector
-0xd00 - 0xeeb EDDBUF (edd.S) for edd data
+000/040 ALL screen_info Text mode or frame buffer information
+ (struct screen_info)
+040/014 ALL apm_bios_info APM BIOS information (struct apm_bios_info)
+060/010 ALL ist_info Intel SpeedStep (IST) BIOS support information
+ (struct ist_info)
+080/010 ALL hd0_info hd0 disk parameter, OBSOLETE!!
+090/010 ALL hd1_info hd1 disk parameter, OBSOLETE!!
+0A0/010 ALL sys_desc_table System description table (struct sys_desc_table)
+140/080 ALL edid_info Video mode setup (struct edid_info)
+1C0/020 ALL efi_info EFI 32 information (struct efi_info)
+1E0/004 ALL alk_mem_k Alternative mem check, in KB
+1E4/004 ALL scratch Scratch field for the kernel setup code
+1E8/001 ALL e820_entries Number of entries in e820_map (below)
+1E9/001 ALL eddbuf_entries Number of entries in eddbuf (below)
+1EA/001 ALL edd_mbr_sig_buf_entries Number of entries in edd_mbr_sig_buffer
+ (below)
+290/040 ALL edd_mbr_sig_buffer EDD MBR signatures
+2D0/A00 ALL e820_map E820 memory map table
+ (array of struct e820entry)
+D00/1EC ALL eddbuf EDD data (array of struct edd_info)
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 970b2de..761ca7b 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -6,9 +6,8 @@ config TRACE_IRQFLAGS_SUPPORT
source "lib/Kconfig.debug"
config EARLY_PRINTK
- bool "Early printk" if EMBEDDED && DEBUG_KERNEL
+ bool "Early printk" if EMBEDDED && DEBUG_KERNEL && X86_32
default y
- depends on X86_32
help
Write kernel log output directly into the VGA buffer or to a serial
port.
@@ -91,7 +90,7 @@ config DOUBLEFAULT
config IOMMU_DEBUG
bool "Enable IOMMU debugging"
- depends on IOMMU && DEBUG_KERNEL
+ depends on GART_IOMMU && DEBUG_KERNEL
depends on X86_64
help
Force the IOMMU to on even when you have less than 4GB of
@@ -113,7 +112,4 @@ config IOMMU_LEAK
Add a simple leak tracer to the IOMMU code. This is useful when you
are debugging a buggy device driver that leaks IOMMU mappings.
-#config X86_REMOTE_DEBUG
-# bool "kgdb debugging stub"
-
endmenu
diff --git a/arch/x86/Kconfig.x86_64 b/arch/x86/Kconfig.x86_64
index e2542e5..b45855c 100644
--- a/arch/x86/Kconfig.x86_64
+++ b/arch/x86/Kconfig.x86_64
@@ -97,10 +97,6 @@ config X86_CMPXCHG
bool
default y
-config EARLY_PRINTK
- bool
- default y
-
config GENERIC_ISA_DMA
bool
default y
@@ -479,8 +475,8 @@ config HPET_EMULATE_RTC
# Mark as embedded because too many people got it wrong.
# The code disables itself when not needed.
-config IOMMU
- bool "IOMMU support" if EMBEDDED
+config GART_IOMMU
+ bool "GART IOMMU support" if EMBEDDED
default y
select SWIOTLB
select AGP
@@ -687,7 +683,7 @@ source kernel/Kconfig.hz
config K8_NB
def_bool y
- depends on AGP_AMD64 || IOMMU || (PCI && NUMA)
+ depends on AGP_AMD64 || GART_IOMMU || (PCI && NUMA)
endmenu
diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig
index b091c5e..38a83f9 100644
--- a/arch/x86/configs/x86_64_defconfig
+++ b/arch/x86/configs/x86_64_defconfig
@@ -170,7 +170,7 @@ CONFIG_HOTPLUG_CPU=y
CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
CONFIG_HPET_TIMER=y
CONFIG_HPET_EMULATE_RTC=y
-CONFIG_IOMMU=y
+CONFIG_GART_IOMMU=y
# CONFIG_CALGARY_IOMMU is not set
CONFIG_SWIOTLB=y
CONFIG_X86_MCE=y
diff --git a/arch/x86/kernel/Makefile_64 b/arch/x86/kernel/Makefile_64
index 466337a..24671c3 100644
--- a/arch/x86/kernel/Makefile_64
+++ b/arch/x86/kernel/Makefile_64
@@ -25,7 +25,7 @@ obj-$(CONFIG_CRASH_DUMP) += crash_dump_64.o
obj-$(CONFIG_PM) += suspend_64.o
obj-$(CONFIG_HIBERNATION) += suspend_asm_64.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-obj-$(CONFIG_IOMMU) += pci-gart_64.o aperture_64.o
+obj-$(CONFIG_GART_IOMMU) += pci-gart_64.o aperture_64.o
obj-$(CONFIG_CALGARY_IOMMU) += pci-calgary_64.o tce_64.o
obj-$(CONFIG_SWIOTLB) += pci-swiotlb_64.o
obj-$(CONFIG_KPROBES) += kprobes_64.o
diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c
index 8f681ca..5b69927 100644
--- a/arch/x86/kernel/aperture_64.c
+++ b/arch/x86/kernel/aperture_64.c
@@ -20,14 +20,14 @@
#include <linux/ioport.h>
#include <asm/e820.h>
#include <asm/io.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/pci-direct.h>
#include <asm/dma.h>
#include <asm/k8.h>
-int iommu_aperture;
-int iommu_aperture_disabled __initdata = 0;
-int iommu_aperture_allowed __initdata = 0;
+int gart_iommu_aperture;
+int gart_iommu_aperture_disabled __initdata = 0;
+int gart_iommu_aperture_allowed __initdata = 0;
int fallback_aper_order __initdata = 1; /* 64MB */
int fallback_aper_force __initdata = 0;
@@ -204,14 +204,15 @@ static __u32 __init search_agp_bridge(u32 *order, int *valid_agp)
return 0;
}
-void __init iommu_hole_init(void)
+void __init gart_iommu_hole_init(void)
{
int fix, num;
u32 aper_size, aper_alloc = 0, aper_order = 0, last_aper_order = 0;
u64 aper_base, last_aper_base = 0;
int valid_agp = 0;
- if (iommu_aperture_disabled || !fix_aperture || !early_pci_allowed())
+ if (gart_iommu_aperture_disabled || !fix_aperture ||
+ !early_pci_allowed())
return;
printk(KERN_INFO "Checking aperture...\n");
@@ -222,7 +223,7 @@ void __init iommu_hole_init(void)
continue;
iommu_detected = 1;
- iommu_aperture = 1;
+ gart_iommu_aperture = 1;
aper_order = (read_pci_config(0, num, 3, 0x90) >> 1) & 7;
aper_size = (32 * 1024 * 1024) << aper_order;
diff --git a/arch/x86/kernel/cpu/proc.c b/arch/x86/kernel/cpu/proc.c
index 2d42b41..066f8c6 100644
--- a/arch/x86/kernel/cpu/proc.c
+++ b/arch/x86/kernel/cpu/proc.c
@@ -49,7 +49,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
/* Intel-defined (#2) */
"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
- NULL, NULL, "dca", NULL, NULL, NULL, NULL, "popcnt",
+ NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* VIA/Cyrix/Centaur-defined */
@@ -59,10 +59,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* AMD-defined (#2) */
- "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8_legacy",
- "altmovcr8", "abm", "sse4a",
- "misalignsse", "3dnowprefetch",
- "osvw", "ibs", NULL, NULL, NULL, NULL,
+ "lahf_lm", "cmp_legacy", "svm", "extapic",
+ "cr8_legacy", "abm", "sse4a", "misalignsse",
+ "3dnowprefetch", "osvw", "ibs", "sse5",
+ "skinit", "wdt", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 639e632..88bb83e 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -17,19 +17,19 @@
#include <asm/io_apic.h>
#include <asm/apic.h>
-#ifdef CONFIG_IOMMU
-#include <asm/iommu.h>
+#ifdef CONFIG_GART_IOMMU
+#include <asm/gart.h>
#endif
static void __init via_bugs(void)
{
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
if ((end_pfn > MAX_DMA32_PFN || force_iommu) &&
- !iommu_aperture_allowed) {
+ !gart_iommu_aperture_allowed) {
printk(KERN_INFO
"Looks like a VIA chipset. Disabling IOMMU."
" Override with iommu=allowed\n");
- iommu_aperture_disabled = 1;
+ gart_iommu_aperture_disabled = 1;
}
#endif
}
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 1a20fe3..6bf1f71 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -36,7 +36,7 @@
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/scatterlist.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/calgary.h>
#include <asm/tce.h>
#include <asm/pci-direct.h>
diff --git a/arch/x86/kernel/pci-dma_64.c b/arch/x86/kernel/pci-dma_64.c
index 393e272..aa805b1 100644
--- a/arch/x86/kernel/pci-dma_64.c
+++ b/arch/x86/kernel/pci-dma_64.c
@@ -9,7 +9,7 @@
#include <linux/module.h>
#include <linux/dmar.h>
#include <asm/io.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/calgary.h>
int iommu_merge __read_mostly = 1;
@@ -275,7 +275,7 @@ __init int iommu_setup(char *p)
swiotlb = 1;
#endif
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
gart_parse_options(p);
#endif
@@ -298,8 +298,8 @@ void __init pci_iommu_alloc(void)
* The order of these functions is important for
* fall-back/fail-over reasons
*/
-#ifdef CONFIG_IOMMU
- iommu_hole_init();
+#ifdef CONFIG_GART_IOMMU
+ gart_iommu_hole_init();
#endif
#ifdef CONFIG_CALGARY_IOMMU
@@ -321,7 +321,7 @@ static int __init pci_iommu_init(void)
intel_iommu_init();
-#ifdef CONFIG_IOMMU
+#ifdef CONFIG_GART_IOMMU
gart_iommu_init();
#endif
diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c
index 79b514b..06bcba5 100644
--- a/arch/x86/kernel/pci-gart_64.c
+++ b/arch/x86/kernel/pci-gart_64.c
@@ -30,17 +30,17 @@
#include <asm/mtrr.h>
#include <asm/pgtable.h>
#include <asm/proto.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/cacheflush.h>
#include <asm/swiotlb.h>
#include <asm/dma.h>
#include <asm/k8.h>
-unsigned long iommu_bus_base; /* GART remapping area (physical) */
+static unsigned long iommu_bus_base; /* GART remapping area (physical) */
static unsigned long iommu_size; /* size of remapping area bytes */
static unsigned long iommu_pages; /* .. and in pages */
-u32 *iommu_gatt_base; /* Remapping table */
+static u32 *iommu_gatt_base; /* Remapping table */
/* If this is disabled the IOMMU will use an optimized flushing strategy
of only flushing when an mapping is reused. With it true the GART is flushed
@@ -135,8 +135,8 @@ static void flush_gart(void)
/* Debugging aid for drivers that don't free their IOMMU tables */
static void **iommu_leak_tab;
static int leak_trace;
-int iommu_leak_pages = 20;
-void dump_leak(void)
+static int iommu_leak_pages = 20;
+static void dump_leak(void)
{
int i;
static int dump;
@@ -627,12 +627,12 @@ void __init gart_iommu_init(void)
return;
/* Did we detect a different HW IOMMU? */
- if (iommu_detected && !iommu_aperture)
+ if (iommu_detected && !gart_iommu_aperture)
return;
if (no_iommu ||
(!force_iommu && end_pfn <= MAX_DMA32_PFN) ||
- !iommu_aperture ||
+ !gart_iommu_aperture ||
(no_agp && init_k8_gatt(&info) < 0)) {
if (end_pfn > MAX_DMA32_PFN) {
printk(KERN_ERR "WARNING more than 4GB of memory "
@@ -733,9 +733,9 @@ void __init gart_parse_options(char *p)
fix_aperture = 0;
/* duplicated from pci-dma.c */
if (!strncmp(p,"force",5))
- iommu_aperture_allowed = 1;
+ gart_iommu_aperture_allowed = 1;
if (!strncmp(p,"allowed",7))
- iommu_aperture_allowed = 1;
+ gart_iommu_aperture_allowed = 1;
if (!strncmp(p, "memaper", 7)) {
fallback_aper_force = 1;
p += 7;
diff --git a/arch/x86/kernel/pci-nommu_64.c b/arch/x86/kernel/pci-nommu_64.c
index faf70bd..ab08e18 100644
--- a/arch/x86/kernel/pci-nommu_64.c
+++ b/arch/x86/kernel/pci-nommu_64.c
@@ -7,7 +7,7 @@
#include <linux/dma-mapping.h>
#include <linux/scatterlist.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/processor.h>
#include <asm/dma.h>
diff --git a/arch/x86/kernel/pci-swiotlb_64.c b/arch/x86/kernel/pci-swiotlb_64.c
index b2f405e..102866d 100644
--- a/arch/x86/kernel/pci-swiotlb_64.c
+++ b/arch/x86/kernel/pci-swiotlb_64.c
@@ -5,7 +5,7 @@
#include <linux/module.h>
#include <linux/dma-mapping.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
#include <asm/swiotlb.h>
#include <asm/dma.h>
diff --git a/arch/x86/kernel/reboot_64.c b/arch/x86/kernel/reboot_64.c
index 776eb06..71b13c5 100644
--- a/arch/x86/kernel/reboot_64.c
+++ b/arch/x86/kernel/reboot_64.c
@@ -17,7 +17,7 @@
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
#include <asm/apic.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
/*
* Power off function, if any
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index cc0e914..e1e18c3 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -86,9 +86,6 @@ unsigned long mmu_cr4_features;
/* for MCA, but anyone else can use it if they want */
unsigned int machine_id;
-#ifdef CONFIG_MCA
-EXPORT_SYMBOL(machine_id);
-#endif
unsigned int machine_submodel_id;
unsigned int BIOS_revision;
unsigned int mca_pentium_flag;
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index e7a9e36..238633d 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -1040,7 +1040,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
/* Intel-defined (#2) */
"pni", NULL, NULL, "monitor", "ds_cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL, NULL, "cx16", "xtpr", NULL,
- NULL, NULL, "dca", NULL, NULL, NULL, NULL, "popcnt",
+ NULL, NULL, "dca", "sse4_1", "sse4_2", NULL, NULL, "popcnt",
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* VIA/Cyrix/Centaur-defined */
@@ -1050,10 +1050,10 @@ static int show_cpuinfo(struct seq_file *m, void *v)
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
/* AMD-defined (#2) */
- "lahf_lm", "cmp_legacy", "svm", "extapic", "cr8_legacy",
- "altmovcr8", "abm", "sse4a",
- "misalignsse", "3dnowprefetch",
- "osvw", "ibs", NULL, NULL, NULL, NULL,
+ "lahf_lm", "cmp_legacy", "svm", "extapic",
+ "cr8_legacy", "abm", "sse4a", "misalignsse",
+ "3dnowprefetch", "osvw", "ibs", "sse5",
+ "skinit", "wdt", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c
index fe608a4..13a474d 100644
--- a/arch/x86/mm/discontig_32.c
+++ b/arch/x86/mm/discontig_32.c
@@ -40,7 +40,7 @@
struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
EXPORT_SYMBOL(node_data);
-bootmem_data_t node0_bdata;
+static bootmem_data_t node0_bdata;
/*
* numa interface - we expect the numa architecture specific code to have
@@ -404,7 +404,7 @@ void __init set_highmem_pages_init(int bad_ppro)
}
#ifdef CONFIG_MEMORY_HOTPLUG
-int paddr_to_nid(u64 addr)
+static int paddr_to_nid(u64 addr)
{
int nid;
unsigned long pfn = PFN_DOWN(addr);
diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index f22c253..ccb1fa8 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -56,9 +56,9 @@ config AGP_AMD
X on AMD Irongate, 761, and 762 chipsets.
config AGP_AMD64
- tristate "AMD Opteron/Athlon64 on-CPU GART support" if !IOMMU
+ tristate "AMD Opteron/Athlon64 on-CPU GART support" if !GART_IOMMU
depends on AGP && X86
- default y if IOMMU
+ default y if GART_IOMMU
help
This option gives you AGP support for the GLX component of
X using the on-CPU northbridge of the AMD Athlon64/Opteron CPUs.
diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c
index d95662e..d8200ac 100644
--- a/drivers/char/agp/amd64-agp.c
+++ b/drivers/char/agp/amd64-agp.c
@@ -787,7 +787,7 @@ static void __exit agp_amd64_cleanup(void)
/* On AMD64 the PCI driver needs to initialize this driver early
for the IOMMU, so it has to be called via a backdoor. */
-#ifndef CONFIG_IOMMU
+#ifndef CONFIG_GART_IOMMU
module_init(agp_amd64_init);
module_exit(agp_amd64_cleanup);
#endif
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 9b35259..8af1d9a 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -34,7 +34,7 @@
#include "intel-iommu.h"
#include <asm/proto.h> /* force_iommu in this header in x86-64*/
#include <asm/cacheflush.h>
-#include <asm/iommu.h>
+#include <asm/gart.h>
#include "pci.h"
#define IS_GFX_DEVICE(pdev) ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY)
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index eb4ac47..316a746 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -434,7 +434,7 @@ int usb_sg_init (
if (dma) {
io->urbs [i]->transfer_dma = sg_dma_address (sg + i);
len = sg_dma_len (sg + i);
-#if defined(CONFIG_HIGHMEM) || defined(CONFIG_IOMMU)
+#if defined(CONFIG_HIGHMEM) || defined(CONFIG_GART_IOMMU)
io->urbs[i]->transfer_buffer = NULL;
#else
io->urbs[i]->transfer_buffer = sg_virt(&sg[i]);
diff --git a/include/asm-x86/gart.h b/include/asm-x86/gart.h
new file mode 100644
index 0000000..f704c50
--- /dev/null
+++ b/include/asm-x86/gart.h
@@ -0,0 +1,29 @@
+#ifndef _ASM_X8664_IOMMU_H
+#define _ASM_X8664_IOMMU_H 1
+
+extern void pci_iommu_shutdown(void);
+extern void no_iommu_init(void);
+extern int force_iommu, no_iommu;
+extern int iommu_detected;
+#ifdef CONFIG_GART_IOMMU
+extern void gart_iommu_init(void);
+extern void gart_iommu_shutdown(void);
+extern void __init gart_parse_options(char *);
+extern void gart_iommu_hole_init(void);
+extern int fallback_aper_order;
+extern int fallback_aper_force;
+extern int gart_iommu_aperture;
+extern int gart_iommu_aperture_allowed;
+extern int gart_iommu_aperture_disabled;
+extern int fix_aperture;
+#else
+#define gart_iommu_aperture 0
+#define gart_iommu_aperture_allowed 0
+
+static inline void gart_iommu_shutdown(void)
+{
+}
+
+#endif
+
+#endif
diff --git a/include/asm-x86/iommu.h b/include/asm-x86/iommu.h
index 5af471f..07862fd 100644
--- a/include/asm-x86/iommu.h
+++ b/include/asm-x86/iommu.h
@@ -1,5 +1,5 @@
-#ifndef _ASM_X8664_IOMMU_H
-#define _ASM_X8664_IOMMU_H 1
+#ifndef _ASM_X8664_GART_H
+#define _ASM_X8664_GART_H 1
extern void pci_iommu_shutdown(void);
extern void no_iommu_init(void);
diff --git a/include/asm-x86/pci_64.h b/include/asm-x86/pci_64.h
index 9baa46d..ef54226 100644
--- a/include/asm-x86/pci_64.h
+++ b/include/asm-x86/pci_64.h
@@ -37,7 +37,7 @@ extern int iommu_setup(char *opt);
*/
#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys)
-#if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
+#if defined(CONFIG_GART_IOMMU) || defined(CONFIG_CALGARY_IOMMU)
#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \
dma_addr_t ADDR_NAME;
-
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