9 files changed, 42 insertions, 29 deletions

diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h
index ff9ac8d19eb2..288233fd77d7 100644
--- a/include/asm-i386/apic.h
+++ b/include/asm-i386/apic.h
@@ -139,6 +139,8 @@ void switch_ipi_to_APIC_timer(void *cpumask);
 
 extern int timer_over_8254;
 
+extern int modern_apic(void);
+
 #else /* !CONFIG_X86_LOCAL_APIC */
 static inline void lapic_shutdown(void) { }
 
diff --git a/include/asm-i386/atomic.h b/include/asm-i386/atomic.h
index 22d80ece95cb..4ddce5296a78 100644
--- a/include/asm-i386/atomic.h
+++ b/include/asm-i386/atomic.h
@@ -183,6 +183,7 @@ static __inline__ int atomic_add_return(int i, atomic_t *v)
 {
         int __i;
 #ifdef CONFIG_M386
+        unsigned long flags;
         if(unlikely(boot_cpu_data.x86==3))
                 goto no_xadd;
 #endif
@@ -196,10 +197,10 @@ static __inline__ int atomic_add_return(int i, atomic_t *v)
 
 #ifdef CONFIG_M386
 no_xadd: /* Legacy 386 processor */
-        local_irq_disable();
+        local_irq_save(flags);
         __i = atomic_read(v);
         atomic_set(v, i + __i);
-        local_irq_enable();
+        local_irq_restore(flags);
         return i + __i;
 #endif
 }
diff --git a/include/asm-i386/cpufeature.h b/include/asm-i386/cpufeature.h
index 5c0b5876b931..b44bfc6239cb 100644
--- a/include/asm-i386/cpufeature.h
+++ b/include/asm-i386/cpufeature.h
@@ -71,6 +71,7 @@
 #define X86_FEATURE_P4          (3*32+ 7) /* P4 */
 #define X86_FEATURE_CONSTANT_TSC (3*32+ 8) /* TSC ticks at a constant rate */
 #define X86_FEATURE_UP          (3*32+ 9) /* smp kernel running on up */
+#define X86_FEATURE_FXSAVE_LEAK (3*32+10) /* FXSAVE leaks FOP/FIP/FOP */
 
 /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
 #define X86_FEATURE_XMM3        (4*32+ 0) /* Streaming SIMD Extensions-3 */
diff --git a/include/asm-i386/e820.h b/include/asm-i386/e820.h
index edf65be21a92..ca82acb8cb1f 100644
--- a/include/asm-i386/e820.h
+++ b/include/asm-i386/e820.h
@@ -35,6 +35,10 @@ struct e820map {
 };
 
 extern struct e820map e820;
+
+extern int e820_all_mapped(unsigned long start, unsigned long end,
+                           unsigned type);
+
 #endif/*!__ASSEMBLY__*/
 
 #endif/*__E820_HEADER*/
diff --git a/include/asm-i386/hpet.h b/include/asm-i386/hpet.h
index 16ef9f996e3f..7f1a8a6ee32f 100644
--- a/include/asm-i386/hpet.h
+++ b/include/asm-i386/hpet.h
@@ -89,6 +89,7 @@
  * then 32 bit HPET counter wrapsaround in less than 0.5 sec.
  */
 #define HPET_MIN_PERIOD (100000UL)
+#define HPET_TICK_RATE  (HZ * 100000UL)
 
 extern unsigned long hpet_tick;         /* hpet clks count per tick */
 extern unsigned long hpet_address;      /* hpet memory map physical address */
diff --git a/include/asm-i386/i387.h b/include/asm-i386/i387.h
index 152d0baa576a..7b1f01191e70 100644
--- a/include/asm-i386/i387.h
+++ b/include/asm-i386/i387.h
@@ -13,6 +13,7 @@
 
 #include <linux/sched.h>
 #include <linux/init.h>
+#include <linux/kernel_stat.h>
 #include <asm/processor.h>
 #include <asm/sigcontext.h>
 #include <asm/user.h>
@@ -38,17 +39,38 @@ extern void init_fpu(struct task_struct *);
 extern void kernel_fpu_begin(void);
 #define kernel_fpu_end() do { stts(); preempt_enable(); } while(0)
 
+/* We need a safe address that is cheap to find and that is already
+   in L1 during context switch. The best choices are unfortunately
+   different for UP and SMP */
+#ifdef CONFIG_SMP
+#define safe_address (__per_cpu_offset[0])
+#else
+#define safe_address (kstat_cpu(0).cpustat.user)
+#endif
+
 /*
  * These must be called with preempt disabled
  */
 static inline void __save_init_fpu( struct task_struct *tsk )
 {
+        /* Use more nops than strictly needed in case the compiler
+           varies code */
         alternative_input(
-                "fnsave %1 ; fwait ;" GENERIC_NOP2,
-                "fxsave %1 ; fnclex",
+                "fnsave %[fx] ;fwait;" GENERIC_NOP8 GENERIC_NOP4,
+                "fxsave %[fx]\n"
+                "bt $7,%[fsw] ; jc 1f ; fnclex\n1:",
                 X86_FEATURE_FXSR,
-                "m" (tsk->thread.i387.fxsave)
-                :"memory");
+                [fx] "m" (tsk->thread.i387.fxsave),
+                [fsw] "m" (tsk->thread.i387.fxsave.swd) : "memory");
+        /* AMD K7/K8 CPUs don't save/restore FDP/FIP/FOP unless an exception
+           is pending.  Clear the x87 state here by setting it to fixed
+           values. __per_cpu_offset[0] is a random variable that should be in L1 */
+        alternative_input(
+                GENERIC_NOP8 GENERIC_NOP2,
+                "emms\n\t"              /* clear stack tags */
+                "fildl %[addr]",        /* set F?P to defined value */
+                X86_FEATURE_FXSAVE_LEAK,
+                [addr] "m" (safe_address));
         task_thread_info(tsk)->status &= ~TS_USEDFPU;
 }
 
diff --git a/include/asm-i386/mpspec.h b/include/asm-i386/mpspec.h
index 62113d3bfdc2..770bf6da8c3d 100644
--- a/include/asm-i386/mpspec.h
+++ b/include/asm-i386/mpspec.h
@@ -18,7 +18,6 @@ extern void find_smp_config (void);
 extern void get_smp_config (void);
 extern int nr_ioapics;
 extern int apic_version [MAX_APICS];
-extern int mp_bus_id_to_type [MAX_MP_BUSSES];
 extern int mp_irq_entries;
 extern struct mpc_config_intsrc mp_irqs [MAX_IRQ_SOURCES];
 extern int mpc_default_type;
diff --git a/include/asm-i386/numnodes.h b/include/asm-i386/numnodes.h
deleted file mode 100644
index a61f38c8176f..000000000000
--- a/include/asm-i386/numnodes.h
+++ /dev/null
@@ -1,18 +0,0 @@
-#ifndef _ASM_MAX_NUMNODES_H
-#define _ASM_MAX_NUMNODES_H
-
-#include <linux/config.h>
-
-#ifdef CONFIG_X86_NUMAQ
-
-/* Max 16 Nodes */
-#define NODES_SHIFT     4
-
-#elif defined(CONFIG_ACPI_SRAT)
-
-/* Max 8 Nodes */
-#define NODES_SHIFT     3
-
-#endif /* CONFIG_X86_NUMAQ */
-
-#endif /* _ASM_MAX_NUMNODES_H */
diff --git a/include/asm-i386/unistd.h b/include/asm-i386/unistd.h
index 2e7f3e257fdd..d81d6cfc1bb4 100644
--- a/include/asm-i386/unistd.h
+++ b/include/asm-i386/unistd.h
@@ -288,7 +288,7 @@
 #define __NR_mq_timedreceive    (__NR_mq_open+3)
 #define __NR_mq_notify          (__NR_mq_open+4)
 #define __NR_mq_getsetattr      (__NR_mq_open+5)
-#define __NR_sys_kexec_load     283
+#define __NR_kexec_load         283
 #define __NR_waitid             284
 /* #define __NR_sys_setaltroot  285 */
 #define __NR_add_key            286
@@ -318,10 +318,11 @@
 #define __NR_unshare            310
 #define __NR_set_robust_list    311
 #define __NR_get_robust_list    312
-#define __NR_sys_splice         313
-#define __NR_sys_sync_file_range 314
+#define __NR_splice             313
+#define __NR_sync_file_range    314
+#define __NR_tee                315
 
-#define NR_syscalls 315
+#define NR_syscalls 316
 
 /*
  * user-visible error numbers are in the range -1 - -128: see