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:
  ptrace, x86: fix the usage of ptrace_fork()
  i8327: fix outb() parameter order
  x86: fix math_emu register frame access
  x86: math_emu info cleanup
  x86: include correct %gs in a.out core dump
  x86, vmi: put a missing paravirt_release_pmd in pgd_dtor
  x86: find nr_irqs_gsi with mp_ioapic_routing
  x86: add clflush before monitor for Intel 7400 series
  x86: disable intel_iommu support by default
  x86: don't apply __supported_pte_mask to non-present ptes
  x86: fix grammar in user-visible BIOS warning
  x86/Kconfig.cpu: make Kconfig help readable in the console
  x86, 64-bit: print DMI info in the oops trace

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index d8362cf..b182626 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -937,6 +937,8 @@ and is between 256 and 4096 characters. It is defined in the file
 
 
        intel_iommu=    [DMAR] Intel IOMMU driver (DMAR) option
+               on
+                       Enable intel iommu driver.
                off
                        Disable intel iommu driver.
                igfx_off [Default Off]

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 73f7fe8..9c39095 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1802,6 +1802,17 @@ config DMAR
          and include PCI device scope covered by these DMA
          remapping devices.
 
+config DMAR_DEFAULT_ON
+       def_bool n
+       prompt "Enable DMA Remapping Devices by default"
+       depends on DMAR
+       help
+         Selecting this option will enable a DMAR device at boot time if
+         one is found. If this option is not selected, DMAR support can
+         be enabled by passing intel_iommu=on to the kernel. It is
+         recommended you say N here while the DMAR code remains
+         experimental.
+
 config DMAR_GFX_WA
        def_bool y
        prompt "Support for Graphics workaround"

diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 8078955..c98d52e 100644 (file)
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -167,9 +167,9 @@ config MK7
 config MK8
        bool "Opteron/Athlon64/Hammer/K8"
        help
-         Select this for an AMD Opteron or Athlon64 Hammer-family processor.  Enables
-         use of some extended instructions, and passes appropriate optimization
-         flags to GCC.
+         Select this for an AMD Opteron or Athlon64 Hammer-family processor.
+         Enables use of some extended instructions, and passes appropriate
+         optimization flags to GCC.
 
 config MCRUSOE
        bool "Crusoe"
@@ -256,9 +256,11 @@ config MPSC
 config MCORE2
        bool "Core 2/newer Xeon"
        help
-         Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and 53xx)
-         CPUs. You can distinguish newer from older Xeons by the CPU family
-         in /proc/cpuinfo. Newer ones have 6 and older ones 15 (not a typo)
+
+         Select this for Intel Core 2 and newer Core 2 Xeons (Xeon 51xx and
+         53xx) CPUs. You can distinguish newer from older Xeons by the CPU
+         family in /proc/cpuinfo. Newer ones have 6 and older ones 15
+         (not a typo)
 
 config GENERIC_CPU
        bool "Generic-x86-64"
@@ -320,14 +322,14 @@ config X86_PPRO_FENCE
        bool "PentiumPro memory ordering errata workaround"
        depends on M686 || M586MMX || M586TSC || M586 || M486 || M386 || MGEODEGX1
        help
-         Old PentiumPro multiprocessor systems had errata that could cause memory
-         operations to violate the x86 ordering standard in rare cases. Enabling this
-         option will attempt to work around some (but not all) occurances of
-         this problem, at the cost of much heavier spinlock and memory barrier
-         operations.
+         Old PentiumPro multiprocessor systems had errata that could cause
+         memory operations to violate the x86 ordering standard in rare cases.
+         Enabling this option will attempt to work around some (but not all)
+         occurances of this problem, at the cost of much heavier spinlock and
+         memory barrier operations.
 
-         If unsure, say n here. Even distro kernels should think twice before enabling
-         this: there are few systems, and an unlikely bug.
+         If unsure, say n here. Even distro kernels should think twice before
+         enabling this: there are few systems, and an unlikely bug.
 
 config X86_F00F_BUG
        def_bool y

diff --git a/arch/x86/include/asm/a.out-core.h b/arch/x86/include/asm/a.out-core.h
index 3782220..3c601f8 100644 (file)
--- a/arch/x86/include/asm/a.out-core.h
+++ b/arch/x86/include/asm/a.out-core.h
@@ -23,8 +23,6 @@
  */
 static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
 {
-       u16 gs;
-
 /* changed the size calculations - should hopefully work better. lbt */
        dump->magic = CMAGIC;
        dump->start_code = 0;
@@ -57,7 +55,7 @@ static inline void aout_dump_thread(struct pt_regs *regs, struct user *dump)
        dump->regs.ds = (u16)regs->ds;
        dump->regs.es = (u16)regs->es;
        dump->regs.fs = (u16)regs->fs;
-       savesegment(gs, gs);
+       savesegment(gs, dump->regs.gs);
        dump->regs.orig_ax = regs->orig_ax;
        dump->regs.ip = regs->ip;
        dump->regs.cs = (u16)regs->cs;

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index ea408dc..7301e60 100644 (file)
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -93,6 +93,7 @@
 #define X86_FEATURE_XTOPOLOGY  (3*32+22) /* cpu topology enum extensions */
 #define X86_FEATURE_TSC_RELIABLE (3*32+23) /* TSC is known to be reliable */
 #define X86_FEATURE_NONSTOP_TSC        (3*32+24) /* TSC does not stop in C states */
+#define X86_FEATURE_CLFLUSH_MONITOR (3*32+25) /* "" clflush reqd with monitor */
 
 /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
 #define X86_FEATURE_XMM3       (4*32+ 0) /* "pni" SSE-3 */

diff --git a/arch/x86/include/asm/math_emu.h b/arch/x86/include/asm/math_emu.h
index 5a65b10..031f626 100644 (file)
--- a/arch/x86/include/asm/math_emu.h
+++ b/arch/x86/include/asm/math_emu.h
@@ -1,31 +1,18 @@
 #ifndef _ASM_X86_MATH_EMU_H
 #define _ASM_X86_MATH_EMU_H
 
+#include <asm/ptrace.h>
+#include <asm/vm86.h>
+
 /* This structure matches the layout of the data saved to the stack
    following a device-not-present interrupt, part of it saved
    automatically by the 80386/80486.
    */
-struct info {
+struct math_emu_info {
        long ___orig_eip;
-       long ___ebx;
-       long ___ecx;
-       long ___edx;
-       long ___esi;
-       long ___edi;
-       long ___ebp;
-       long ___eax;
-       long ___ds;
-       long ___es;
-       long ___fs;
-       long ___orig_eax;
-       long ___eip;
-       long ___cs;
-       long ___eflags;
-       long ___esp;
-       long ___ss;
-       long ___vm86_es; /* This and the following only in vm86 mode */
-       long ___vm86_ds;
-       long ___vm86_fs;
-       long ___vm86_gs;
+       union {
+               struct pt_regs *regs;
+               struct kernel_vm86_regs *vm86;
+       };
 };
 #endif /* _ASM_X86_MATH_EMU_H */

diff --git a/arch/x86/include/asm/mpspec.h b/arch/x86/include/asm/mpspec.h
index 62d14ce..bd22f2a 100644 (file)
--- a/arch/x86/include/asm/mpspec.h
+++ b/arch/x86/include/asm/mpspec.h
@@ -60,6 +60,7 @@ extern void mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger,
                                   u32 gsi);
 extern void mp_config_acpi_legacy_irqs(void);
 extern int mp_register_gsi(u32 gsi, int edge_level, int active_high_low);
+extern int acpi_probe_gsi(void);
 #ifdef CONFIG_X86_IO_APIC
 extern int mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
                                u32 gsi, int triggering, int polarity);
@@ -71,6 +72,11 @@ mp_config_acpi_gsi(unsigned char number, unsigned int devfn, u8 pin,
        return 0;
 }
 #endif
+#else /* !CONFIG_ACPI: */
+static inline int acpi_probe_gsi(void)
+{
+       return 0;
+}
 #endif /* CONFIG_ACPI */
 
 #define PHYSID_ARRAY_SIZE      BITS_TO_LONGS(MAX_APICS)

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 06bbcbd..4f5af84 100644 (file)
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -302,16 +302,30 @@ static inline pte_t pte_mkspecial(pte_t pte)
 
 extern pteval_t __supported_pte_mask;
 
+/*
+ * Mask out unsupported bits in a present pgprot.  Non-present pgprots
+ * can use those bits for other purposes, so leave them be.
+ */
+static inline pgprotval_t massage_pgprot(pgprot_t pgprot)
+{
+       pgprotval_t protval = pgprot_val(pgprot);
+
+       if (protval & _PAGE_PRESENT)
+               protval &= __supported_pte_mask;
+
+       return protval;
+}
+
 static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
 {
-       return __pte((((phys_addr_t)page_nr << PAGE_SHIFT) |
-                     pgprot_val(pgprot)) & __supported_pte_mask);
+       return __pte(((phys_addr_t)page_nr << PAGE_SHIFT) |
+                    massage_pgprot(pgprot));
 }
 
 static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
 {
-       return __pmd((((phys_addr_t)page_nr << PAGE_SHIFT) |
-                     pgprot_val(pgprot)) & __supported_pte_mask);
+       return __pmd(((phys_addr_t)page_nr << PAGE_SHIFT) |
+                    massage_pgprot(pgprot));
 }
 
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
@@ -323,7 +337,7 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
         * the newprot (if present):
         */
        val &= _PAGE_CHG_MASK;
-       val |= pgprot_val(newprot) & (~_PAGE_CHG_MASK) & __supported_pte_mask;
+       val |= massage_pgprot(newprot) & ~_PAGE_CHG_MASK;
 
        return __pte(val);
 }
@@ -339,7 +353,7 @@ static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
 
 #define pte_pgprot(x) __pgprot(pte_flags(x) & PTE_FLAGS_MASK)
 
-#define canon_pgprot(p) __pgprot(pgprot_val(p) & __supported_pte_mask)
+#define canon_pgprot(p) __pgprot(massage_pgprot(p))
 
 static inline int is_new_memtype_allowed(unsigned long flags,
                                                unsigned long new_flags)

diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 091cd88..3bfd523 100644 (file)
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -353,7 +353,7 @@ struct i387_soft_struct {
        u8                      no_update;
        u8                      rm;
        u8                      alimit;
-       struct info             *info;
+       struct math_emu_info    *info;
        u32                     entry_eip;
 };
 

diff --git a/arch/x86/include/asm/traps.h b/arch/x86/include/asm/traps.h
index 2ee0a3b..cf3bb05 100644 (file)
--- a/arch/x86/include/asm/traps.h
+++ b/arch/x86/include/asm/traps.h
@@ -41,7 +41,7 @@ dotraplinkage void do_int3(struct pt_regs *, long);
 dotraplinkage void do_overflow(struct pt_regs *, long);
 dotraplinkage void do_bounds(struct pt_regs *, long);
 dotraplinkage void do_invalid_op(struct pt_regs *, long);
-dotraplinkage void do_device_not_available(struct pt_regs *, long);
+dotraplinkage void do_device_not_available(struct pt_regs);
 dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *, long);
 dotraplinkage void do_invalid_TSS(struct pt_regs *, long);
 dotraplinkage void do_segment_not_present(struct pt_regs *, long);
@@ -77,7 +77,7 @@ extern int panic_on_unrecovered_nmi;
 extern int kstack_depth_to_print;
 
 void math_error(void __user *);
-asmlinkage void math_emulate(long);
+void math_emulate(struct math_emu_info *);
 #ifdef CONFIG_X86_32
 unsigned long patch_espfix_desc(unsigned long, unsigned long);
 #else

diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h
index 7ef617e..4bd990e 100644 (file)
--- a/arch/x86/include/asm/xen/page.h
+++ b/arch/x86/include/asm/xen/page.h
@@ -137,7 +137,7 @@ static inline pte_t mfn_pte(unsigned long page_nr, pgprot_t pgprot)
        pte_t pte;
 
        pte.pte = ((phys_addr_t)page_nr << PAGE_SHIFT) |
-               (pgprot_val(pgprot) & __supported_pte_mask);
+                       massage_pgprot(pgprot);
 
        return pte;
 }

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index d37593c..7678f10 100644 (file)
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -973,6 +973,29 @@ void __init mp_register_ioapic(int id, u32 address, u32 gsi_base)
        nr_ioapics++;
 }
 
+int __init acpi_probe_gsi(void)
+{
+       int idx;
+       int gsi;
+       int max_gsi = 0;
+
+       if (acpi_disabled)
+               return 0;
+
+       if (!acpi_ioapic)
+               return 0;
+
+       max_gsi = 0;
+       for (idx = 0; idx < nr_ioapics; idx++) {
+               gsi = mp_ioapic_routing[idx].gsi_end;
+
+               if (gsi > max_gsi)
+                       max_gsi = gsi;
+       }
+
+       return max_gsi + 1;
+}
+
 static void assign_to_mp_irq(struct mp_config_intsrc *m,
                                    struct mp_config_intsrc *mp_irq)
 {

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index 430e5c3..24ff26a 100644 (file)
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -291,6 +291,9 @@ static void __cpuinit init_intel(struct cpuinfo_x86 *c)
                ds_init_intel(c);
        }
 
+       if (c->x86 == 6 && c->x86_model == 29 && cpu_has_clflush)
+               set_cpu_cap(c, X86_FEATURE_CLFLUSH_MONITOR);
+
 #ifdef CONFIG_X86_64
        if (c->x86 == 15)
                c->x86_cache_alignment = c->x86_clflush_size * 2;

diff --git a/arch/x86/kernel/i8237.c b/arch/x86/kernel/i8237.c
index dbd6c1d..b42ca69 100644 (file)
--- a/arch/x86/kernel/i8237.c
+++ b/arch/x86/kernel/i8237.c
@@ -28,10 +28,10 @@ static int i8237A_resume(struct sys_device *dev)
 
        flags = claim_dma_lock();
 
-       dma_outb(DMA1_RESET_REG, 0);
-       dma_outb(DMA2_RESET_REG, 0);
+       dma_outb(0, DMA1_RESET_REG);
+       dma_outb(0, DMA2_RESET_REG);
 
-       for (i = 0;i < 8;i++) {
+       for (i = 0; i < 8; i++) {
                set_dma_addr(i, 0x000000);
                /* DMA count is a bit weird so this is not 0 */
                set_dma_count(i, 1);
@@ -51,14 +51,14 @@ static int i8237A_suspend(struct sys_device *dev, pm_message_t state)
 }
 
 static struct sysdev_class i8237_sysdev_class = {
-       .name = "i8237",
-       .suspend = i8237A_suspend,
-       .resume = i8237A_resume,
+       .name           = "i8237",
+       .suspend        = i8237A_suspend,
+       .resume         = i8237A_resume,
 };
 
 static struct sys_device device_i8237A = {
-       .id     = 0,
-       .cls    = &i8237_sysdev_class,
+       .id             = 0,
+       .cls            = &i8237_sysdev_class,
 };
 
 static int __init i8237A_init_sysfs(void)
@@ -68,5 +68,4 @@ static int __init i8237A_init_sysfs(void)
                error = sysdev_register(&device_i8237A);
        return error;
 }
-
 device_initcall(i8237A_init_sysfs);

diff --git a/arch/x86/kernel/io_apic.c b/arch/x86/kernel/io_apic.c
index 9b0c480..bc7ac4d 100644 (file)
--- a/arch/x86/kernel/io_apic.c
+++ b/arch/x86/kernel/io_apic.c
@@ -3841,14 +3841,24 @@ int __init io_apic_get_redir_entries (int ioapic)
 
 void __init probe_nr_irqs_gsi(void)
 {
-       int idx;
        int nr = 0;
 
-       for (idx = 0; idx < nr_ioapics; idx++)
-               nr += io_apic_get_redir_entries(idx) + 1;
-
-       if (nr > nr_irqs_gsi)
+       nr = acpi_probe_gsi();
+       if (nr > nr_irqs_gsi) {
                nr_irqs_gsi = nr;
+       } else {
+               /* for acpi=off or acpi is not compiled in */
+               int idx;
+
+               nr = 0;
+               for (idx = 0; idx < nr_ioapics; idx++)
+                       nr += io_apic_get_redir_entries(idx) + 1;
+
+               if (nr > nr_irqs_gsi)
+                       nr_irqs_gsi = nr;
+       }
+
+       printk(KERN_DEBUG "nr_irqs_gsi: %d\n", nr_irqs_gsi);
 }
 
 /* --------------------------------------------------------------------------

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index e68bb9e..6d12f7e 100644 (file)
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -180,6 +180,9 @@ void mwait_idle_with_hints(unsigned long ax, unsigned long cx)
 
        trace_power_start(&it, POWER_CSTATE, (ax>>4)+1);
        if (!need_resched()) {
+               if (cpu_has(&current_cpu_data, X86_FEATURE_CLFLUSH_MONITOR))
+                       clflush((void *)&current_thread_info()->flags);
+
                __monitor((void *)&current_thread_info()->flags, 0, 0);
                smp_mb();
                if (!need_resched())
@@ -194,6 +197,9 @@ static void mwait_idle(void)
        struct power_trace it;
        if (!need_resched()) {
                trace_power_start(&it, POWER_CSTATE, 1);
+               if (cpu_has(&current_cpu_data, X86_FEATURE_CLFLUSH_MONITOR))
+                       clflush((void *)&current_thread_info()->flags);
+
                __monitor((void *)&current_thread_info()->flags, 0, 0);
                smp_mb();
                if (!need_resched())

diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 416fb92..85b4cb5 100644 (file)
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -40,6 +40,7 @@
 #include <linux/uaccess.h>
 #include <linux/io.h>
 #include <linux/ftrace.h>
+#include <linux/dmi.h>
 
 #include <asm/pgtable.h>
 #include <asm/system.h>
@@ -151,14 +152,18 @@ void __show_regs(struct pt_regs *regs, int all)
        unsigned long d0, d1, d2, d3, d6, d7;
        unsigned int fsindex, gsindex;
        unsigned int ds, cs, es;
+       const char *board;
 
        printk("\n");
        print_modules();
-       printk(KERN_INFO "Pid: %d, comm: %.20s %s %s %.*s\n",
+       board = dmi_get_system_info(DMI_PRODUCT_NAME);
+       if (!board)
+               board = "";
+       printk(KERN_INFO "Pid: %d, comm: %.20s %s %s %.*s %s\n",
                current->pid, current->comm, print_tainted(),
                init_utsname()->release,
                (int)strcspn(init_utsname()->version, " "),
-               init_utsname()->version);
+               init_utsname()->version, board);
        printk(KERN_INFO "RIP: %04lx:[<%016lx>] ", regs->cs & 0xffff, regs->ip);
        printk_address(regs->ip, 1);
        printk(KERN_INFO "RSP: %04lx:%016lx  EFLAGS: %08lx\n", regs->ss,

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index ae0d804..c461f6d 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -607,7 +607,7 @@ struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
 static int __init dmi_low_memory_corruption(const struct dmi_system_id *d)
 {
        printk(KERN_NOTICE
-               "%s detected: BIOS may corrupt low RAM, working it around.\n",
+               "%s detected: BIOS may corrupt low RAM, working around it.\n",
                d->ident);
 
        e820_update_range(0, 0x10000, E820_RAM, E820_RESERVED);

diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 98c2d05..7932338 100644 (file)
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -896,7 +896,7 @@ asmlinkage void math_state_restore(void)
 EXPORT_SYMBOL_GPL(math_state_restore);
 
 #ifndef CONFIG_MATH_EMULATION
-asmlinkage void math_emulate(long arg)
+void math_emulate(struct math_emu_info *info)
 {
        printk(KERN_EMERG
                "math-emulation not enabled and no coprocessor found.\n");
@@ -906,16 +906,19 @@ asmlinkage void math_emulate(long arg)
 }
 #endif /* CONFIG_MATH_EMULATION */
 
-dotraplinkage void __kprobes
-do_device_not_available(struct pt_regs *regs, long error)
+dotraplinkage void __kprobes do_device_not_available(struct pt_regs regs)
 {
 #ifdef CONFIG_X86_32
        if (read_cr0() & X86_CR0_EM) {
-               conditional_sti(regs);
-               math_emulate(0);
+               struct math_emu_info info = { };
+
+               conditional_sti(&regs);
+
+               info.regs = &regs;
+               math_emulate(&info);
        } else {
                math_state_restore(); /* interrupts still off */
-               conditional_sti(regs);
+               conditional_sti(&regs);
        }
 #else
        math_state_restore();

diff --git a/arch/x86/kernel/vmi_32.c b/arch/x86/kernel/vmi_32.c
index 1d3302c..bef58b4 100644 (file)
--- a/arch/x86/kernel/vmi_32.c
+++ b/arch/x86/kernel/vmi_32.c
@@ -321,6 +321,16 @@ static void vmi_release_pmd(unsigned long pfn)
 }
 
 /*
+ * We use the pgd_free hook for releasing the pgd page:
+ */
+static void vmi_pgd_free(struct mm_struct *mm, pgd_t *pgd)
+{
+       unsigned long pfn = __pa(pgd) >> PAGE_SHIFT;
+
+       vmi_ops.release_page(pfn, VMI_PAGE_L2);
+}
+
+/*
  * Helper macros for MMU update flags.  We can defer updates until a flush
  * or page invalidation only if the update is to the current address space
  * (otherwise, there is no flush).  We must check against init_mm, since
@@ -762,6 +772,7 @@ static inline int __init activate_vmi(void)
        if (vmi_ops.release_page) {
                pv_mmu_ops.release_pte = vmi_release_pte;
                pv_mmu_ops.release_pmd = vmi_release_pmd;
+               pv_mmu_ops.pgd_free = vmi_pgd_free;
        }
 
        /* Set linear is needed in all cases */

diff --git a/arch/x86/math-emu/fpu_entry.c b/arch/x86/math-emu/fpu_entry.c
index c7b06fe..5d87f58 100644 (file)
--- a/arch/x86/math-emu/fpu_entry.c
+++ b/arch/x86/math-emu/fpu_entry.c
@@ -131,7 +131,7 @@ u_char emulating = 0;
 static int valid_prefix(u_char *Byte, u_char __user ** fpu_eip,
                        overrides * override);
 
-asmlinkage void math_emulate(long arg)
+void math_emulate(struct math_emu_info *info)
 {
        u_char FPU_modrm, byte1;
        unsigned short code;
@@ -161,7 +161,7 @@ asmlinkage void math_emulate(long arg)
        RE_ENTRANT_CHECK_ON;
 #endif /* RE_ENTRANT_CHECKING */
 
-       SETUP_DATA_AREA(arg);
+       FPU_info = info;
 
        FPU_ORIG_EIP = FPU_EIP;
 
@@ -659,7 +659,7 @@ static int valid_prefix(u_char *Byte, u_char __user **fpu_eip,
        }
 }
 
-void math_abort(struct info *info, unsigned int signal)
+void math_abort(struct math_emu_info *info, unsigned int signal)
 {
        FPU_EIP = FPU_ORIG_EIP;
        current->thread.trap_no = 16;

diff --git a/arch/x86/math-emu/fpu_proto.h b/arch/x86/math-emu/fpu_proto.h
index aa49b6a..9779df4 100644 (file)
--- a/arch/x86/math-emu/fpu_proto.h
+++ b/arch/x86/math-emu/fpu_proto.h
@@ -51,8 +51,8 @@ extern void ffreep(void);
 extern void fst_i_(void);
 extern void fstp_i(void);
 /* fpu_entry.c */
-asmlinkage extern void math_emulate(long arg);
-extern void math_abort(struct info *info, unsigned int signal);
+extern void math_emulate(struct math_emu_info *info);
+extern void math_abort(struct math_emu_info *info, unsigned int signal);
 /* fpu_etc.c */
 extern void FPU_etc(void);
 /* fpu_tags.c */

diff --git a/arch/x86/math-emu/fpu_system.h b/arch/x86/math-emu/fpu_system.h
index 13488fa..50fa0ec 100644 (file)
--- a/arch/x86/math-emu/fpu_system.h
+++ b/arch/x86/math-emu/fpu_system.h
@@ -16,10 +16,6 @@
 #include <linux/kernel.h>
 #include <linux/mm.h>
 
-/* This sets the pointer FPU_info to point to the argument part
-   of the stack frame of math_emulate() */
-#define SETUP_DATA_AREA(arg)   FPU_info = (struct info *) &arg
-
 /* s is always from a cpu register, and the cpu does bounds checking
  * during register load --> no further bounds checks needed */
 #define LDT_DESCRIPTOR(s)      (((struct desc_struct *)current->mm->context.ldt)[(s) >> 3])
@@ -38,12 +34,12 @@
 #define I387                   (current->thread.xstate)
 #define FPU_info               (I387->soft.info)
 
-#define FPU_CS                 (*(unsigned short *) &(FPU_info->___cs))
-#define FPU_SS                 (*(unsigned short *) &(FPU_info->___ss))
-#define FPU_DS                 (*(unsigned short *) &(FPU_info->___ds))
-#define FPU_EAX                        (FPU_info->___eax)
-#define FPU_EFLAGS             (FPU_info->___eflags)
-#define FPU_EIP                        (FPU_info->___eip)
+#define FPU_CS                 (*(unsigned short *) &(FPU_info->regs->cs))
+#define FPU_SS                 (*(unsigned short *) &(FPU_info->regs->ss))
+#define FPU_DS                 (*(unsigned short *) &(FPU_info->regs->ds))
+#define FPU_EAX                        (FPU_info->regs->ax)
+#define FPU_EFLAGS             (FPU_info->regs->flags)
+#define FPU_EIP                        (FPU_info->regs->ip)
 #define FPU_ORIG_EIP           (FPU_info->___orig_eip)
 
 #define FPU_lookahead           (I387->soft.lookahead)

diff --git a/arch/x86/math-emu/get_address.c b/arch/x86/math-emu/get_address.c
index d701e2b..420b3b6 100644 (file)
--- a/arch/x86/math-emu/get_address.c
+++ b/arch/x86/math-emu/get_address.c
@@ -29,46 +29,43 @@
 #define FPU_WRITE_BIT 0x10
 
 static int reg_offset[] = {
-       offsetof(struct info, ___eax),
-       offsetof(struct info, ___ecx),
-       offsetof(struct info, ___edx),
-       offsetof(struct info, ___ebx),
-       offsetof(struct info, ___esp),
-       offsetof(struct info, ___ebp),
-       offsetof(struct info, ___esi),
-       offsetof(struct info, ___edi)
+       offsetof(struct pt_regs, ax),
+       offsetof(struct pt_regs, cx),
+       offsetof(struct pt_regs, dx),
+       offsetof(struct pt_regs, bx),
+       offsetof(struct pt_regs, sp),
+       offsetof(struct pt_regs, bp),
+       offsetof(struct pt_regs, si),
+       offsetof(struct pt_regs, di)
 };
 
-#define REG_(x) (*(long *)(reg_offset[(x)]+(u_char *) FPU_info))
+#define REG_(x) (*(long *)(reg_offset[(x)] + (u_char *)FPU_info->regs))
 
 static int reg_offset_vm86[] = {
-       offsetof(struct info, ___cs),
-       offsetof(struct info, ___vm86_ds),
-       offsetof(struct info, ___vm86_es),
-       offsetof(struct info, ___vm86_fs),
-       offsetof(struct info, ___vm86_gs),
-       offsetof(struct info, ___ss),
-       offsetof(struct info, ___vm86_ds)
+       offsetof(struct pt_regs, cs),
+       offsetof(struct kernel_vm86_regs, ds),
+       offsetof(struct kernel_vm86_regs, es),
+       offsetof(struct kernel_vm86_regs, fs),
+       offsetof(struct kernel_vm86_regs, gs),
+       offsetof(struct pt_regs, ss),
+       offsetof(struct kernel_vm86_regs, ds)
 };
 
 #define VM86_REG_(x) (*(unsigned short *) \
-                     (reg_offset_vm86[((unsigned)x)]+(u_char *) FPU_info))
-
-/* This dummy, gs is not saved on the stack. */
-#define ___GS ___ds
+               (reg_offset_vm86[((unsigned)x)] + (u_char *)FPU_info->regs))
 
 static int reg_offset_pm[] = {
-       offsetof(struct info, ___cs),
-       offsetof(struct info, ___ds),
-       offsetof(struct info, ___es),
-       offsetof(struct info, ___fs),
-       offsetof(struct info, ___GS),
-       offsetof(struct info, ___ss),
-       offsetof(struct info, ___ds)
+       offsetof(struct pt_regs, cs),
+       offsetof(struct pt_regs, ds),
+       offsetof(struct pt_regs, es),
+       offsetof(struct pt_regs, fs),
+       offsetof(struct pt_regs, ds),   /* dummy, not saved on stack */
+       offsetof(struct pt_regs, ss),
+       offsetof(struct pt_regs, ds)
 };
 
 #define PM_REG_(x) (*(unsigned short *) \
-                     (reg_offset_pm[((unsigned)x)]+(u_char *) FPU_info))
+               (reg_offset_pm[((unsigned)x)] + (u_char *)FPU_info->regs))
 
 /* Decode the SIB byte. This function assumes mod != 0 */
 static int sib(int mod, unsigned long *fpu_eip)
@@ -349,34 +346,34 @@ void __user *FPU_get_address_16(u_char FPU_modrm, unsigned long *fpu_eip,
        }
        switch (rm) {
        case 0:
-               address += FPU_info->___ebx + FPU_info->___esi;
+               address += FPU_info->regs->bx + FPU_info->regs->si;
                break;
        case 1:
-               address += FPU_info->___ebx + FPU_info->___edi;
+               address += FPU_info->regs->bx + FPU_info->regs->di;
                break;
        case 2:
-               address += FPU_info->___ebp + FPU_info->___esi;
+               address += FPU_info->regs->bp + FPU_info->regs->si;
                if (addr_modes.override.segment == PREFIX_DEFAULT)
                        addr_modes.override.segment = PREFIX_SS_;
                break;
        case 3:
-               address += FPU_info->___ebp + FPU_info->___edi;
+               address += FPU_info->regs->bp + FPU_info->regs->di;
                if (addr_modes.override.segment == PREFIX_DEFAULT)
                        addr_modes.override.segment = PREFIX_SS_;
                break;
        case 4:
-               address += FPU_info->___esi;
+               address += FPU_info->regs->si;
                break;
        case 5:
-               address += FPU_info->___edi;
+               address += FPU_info->regs->di;
                break;
        case 6:
-               address += FPU_info->___ebp;
+               address += FPU_info->regs->bp;
                if (addr_modes.override.segment == PREFIX_DEFAULT)
                        addr_modes.override.segment = PREFIX_SS_;
                break;
        case 7:
-               address += FPU_info->___ebx;
+               address += FPU_info->regs->bx;
                break;
        }
 

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 3dfecb2..f4b7c79 100644 (file)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -268,7 +268,12 @@ static long list_size;
 
 static void domain_remove_dev_info(struct dmar_domain *domain);
 
-int dmar_disabled;
+#ifdef CONFIG_DMAR_DEFAULT_ON
+int dmar_disabled = 0;
+#else
+int dmar_disabled = 1;
+#endif /*CONFIG_DMAR_DEFAULT_ON*/
+
 static int __initdata dmar_map_gfx = 1;
 static int dmar_forcedac;
 static int intel_iommu_strict;
@@ -284,9 +289,12 @@ static int __init intel_iommu_setup(char *str)
        if (!str)
                return -EINVAL;
        while (*str) {
-               if (!strncmp(str, "off", 3)) {
+               if (!strncmp(str, "on", 2)) {
+                       dmar_disabled = 0;
+                       printk(KERN_INFO "Intel-IOMMU: enabled\n");
+               } else if (!strncmp(str, "off", 3)) {
                        dmar_disabled = 1;
-                       printk(KERN_INFO"Intel-IOMMU: disabled\n");
+                       printk(KERN_INFO "Intel-IOMMU: disabled\n");
                } else if (!strncmp(str, "igfx_off", 8)) {
                        dmar_map_gfx = 0;
                        printk(KERN_INFO

diff --git a/kernel/fork.c b/kernel/fork.c
index 6d5dbb7..d624d50 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1094,7 +1094,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 #ifdef CONFIG_DEBUG_MUTEXES
        p->blocked_on = NULL; /* not blocked yet */
 #endif
-       if (unlikely(ptrace_reparented(current)))
+       if (unlikely(current->ptrace))
                ptrace_fork(p, clone_flags);
 
        /* Perform scheduler related setup. Assign this task to a CPU. */