1 files changed, 111 insertions, 93 deletions

diff --git a/include/asm-i386/processor.h b/include/asm-i386/processor.h
index e0ddca94d50c..a52d65440429 100644
--- a/include/asm-i386/processor.h
+++ b/include/asm-i386/processor.h
@@ -20,6 +20,7 @@
 #include <linux/threads.h>
 #include <asm/percpu.h>
 #include <linux/cpumask.h>
+#include <linux/init.h>
 
 /* flag for disabling the tsc */
 extern int tsc_disable;
@@ -72,6 +73,7 @@ struct cpuinfo_x86 {
 #endif
         unsigned char x86_max_cores;    /* cpuid returned max cores value */
         unsigned char apicid;
+        unsigned short x86_clflush_size;
 #ifdef CONFIG_SMP
         unsigned char booted_cores;     /* number of cores as seen by OS */
         __u8 phys_proc_id;              /* Physical processor id. */
@@ -111,6 +113,8 @@ extern struct cpuinfo_x86 cpu_data[];
 extern  int cpu_llc_id[NR_CPUS];
 extern char ignore_fpu_irq;
 
+void __init cpu_detect(struct cpuinfo_x86 *c);
+
 extern void identify_cpu(struct cpuinfo_x86 *);
 extern void print_cpu_info(struct cpuinfo_x86 *);
 extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
@@ -143,8 +147,8 @@ static inline void detect_ht(struct cpuinfo_x86 *c) {}
 #define X86_EFLAGS_VIP  0x00100000 /* Virtual Interrupt Pending */
 #define X86_EFLAGS_ID   0x00200000 /* CPUID detection flag */
 
-static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
-                           unsigned int *ecx, unsigned int *edx)
+static inline fastcall void native_cpuid(unsigned int *eax, unsigned int *ebx,
+                                         unsigned int *ecx, unsigned int *edx)
 {
         /* ecx is often an input as well as an output. */
         __asm__("cpuid"
@@ -155,59 +159,6 @@ static inline void __cpuid(unsigned int *eax, unsigned int *ebx,
                 : "0" (*eax), "2" (*ecx));
 }
 
-/*
- * Generic CPUID function
- * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
- * resulting in stale register contents being returned.
- */
-static inline void cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx)
-{
-        *eax = op;
-        *ecx = 0;
-        __cpuid(eax, ebx, ecx, edx);
-}
-
-/* Some CPUID calls want 'count' to be placed in ecx */
-static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx,
-                               int *edx)
-{
-        *eax = op;
-        *ecx = count;
-        __cpuid(eax, ebx, ecx, edx);
-}
-
-/*
- * CPUID functions returning a single datum
- */
-static inline unsigned int cpuid_eax(unsigned int op)
-{
-        unsigned int eax, ebx, ecx, edx;
-
-        cpuid(op, &eax, &ebx, &ecx, &edx);
-        return eax;
-}
-static inline unsigned int cpuid_ebx(unsigned int op)
-{
-        unsigned int eax, ebx, ecx, edx;
-
-        cpuid(op, &eax, &ebx, &ecx, &edx);
-        return ebx;
-}
-static inline unsigned int cpuid_ecx(unsigned int op)
-{
-        unsigned int eax, ebx, ecx, edx;
-
-        cpuid(op, &eax, &ebx, &ecx, &edx);
-        return ecx;
-}
-static inline unsigned int cpuid_edx(unsigned int op)
-{
-        unsigned int eax, ebx, ecx, edx;
-
-        cpuid(op, &eax, &ebx, &ecx, &edx);
-        return edx;
-}
-
 #define load_cr3(pgdir) write_cr3(__pa(pgdir))
 
 /*
@@ -473,6 +424,7 @@ struct thread_struct {
         .vm86_info = NULL,                                              \
         .sysenter_cs = __KERNEL_CS,                                     \
         .io_bitmap_ptr = NULL,                                          \
+        .gs = __KERNEL_PDA,                                             \
 }
 
 /*
@@ -489,18 +441,9 @@ struct thread_struct {
         .io_bitmap      = { [ 0 ... IO_BITMAP_LONGS] = ~0 },            \
 }
 
-static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
-{
-        tss->esp0 = thread->esp0;
-        /* This can only happen when SEP is enabled, no need to test "SEP"arately */
-        if (unlikely(tss->ss1 != thread->sysenter_cs)) {
-                tss->ss1 = thread->sysenter_cs;
-                wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
-        }
-}
-
 #define start_thread(regs, new_eip, new_esp) do {               \
-        __asm__("movl %0,%%fs ; movl %0,%%gs": :"r" (0));       \
+        __asm__("movl %0,%%fs": :"r" (0));                      \
+        regs->xgs = 0;                                          \
         set_fs(USER_DS);                                        \
         regs->xds = __USER_DS;                                  \
         regs->xes = __USER_DS;                                  \
@@ -510,33 +453,6 @@ static inline void load_esp0(struct tss_struct *tss, struct thread_struct *threa
         regs->esp = new_esp;                                    \
 } while (0)
 
-/*
- * These special macros can be used to get or set a debugging register
- */
-#define get_debugreg(var, register)                             \
-                __asm__("movl %%db" #register ", %0"            \
-                        :"=r" (var))
-#define set_debugreg(value, register)                   \
-                __asm__("movl %0,%%db" #register                \
-                        : /* no output */                       \
-                        :"r" (value))
-
-/*
- * Set IOPL bits in EFLAGS from given mask
- */
-static inline void set_iopl_mask(unsigned mask)
-{
-        unsigned int reg;
-        __asm__ __volatile__ ("pushfl;"
-                              "popl %0;"
-                              "andl %1, %0;"
-                              "orl %2, %0;"
-                              "pushl %0;"
-                              "popfl"
-                                : "=&r" (reg)
-                                : "i" (~X86_EFLAGS_IOPL), "r" (mask));
-}
-
 /* Forward declaration, a strange C thing */
 struct task_struct;
 struct mm_struct;
@@ -628,6 +544,105 @@ static inline void rep_nop(void)
 
 #define cpu_relax()     rep_nop()
 
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define paravirt_enabled() 0
+#define __cpuid native_cpuid
+
+static inline void load_esp0(struct tss_struct *tss, struct thread_struct *thread)
+{
+        tss->esp0 = thread->esp0;
+        /* This can only happen when SEP is enabled, no need to test "SEP"arately */
+        if (unlikely(tss->ss1 != thread->sysenter_cs)) {
+                tss->ss1 = thread->sysenter_cs;
+                wrmsr(MSR_IA32_SYSENTER_CS, thread->sysenter_cs, 0);
+        }
+}
+
+/*
+ * These special macros can be used to get or set a debugging register
+ */
+#define get_debugreg(var, register)                             \
+                __asm__("movl %%db" #register ", %0"            \
+                        :"=r" (var))
+#define set_debugreg(value, register)                   \
+                __asm__("movl %0,%%db" #register                \
+                        : /* no output */                       \
+                        :"r" (value))
+
+#define set_iopl_mask native_set_iopl_mask
+#endif /* CONFIG_PARAVIRT */
+
+/*
+ * Set IOPL bits in EFLAGS from given mask
+ */
+static fastcall inline void native_set_iopl_mask(unsigned mask)
+{
+        unsigned int reg;
+        __asm__ __volatile__ ("pushfl;"
+                              "popl %0;"
+                              "andl %1, %0;"
+                              "orl %2, %0;"
+                              "pushl %0;"
+                              "popfl"
+                                : "=&r" (reg)
+                                : "i" (~X86_EFLAGS_IOPL), "r" (mask));
+}
+
+/*
+ * Generic CPUID function
+ * clear %ecx since some cpus (Cyrix MII) do not set or clear %ecx
+ * resulting in stale register contents being returned.
+ */
+static inline void cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx)
+{
+        *eax = op;
+        *ecx = 0;
+        __cpuid(eax, ebx, ecx, edx);
+}
+
+/* Some CPUID calls want 'count' to be placed in ecx */
+static inline void cpuid_count(int op, int count, int *eax, int *ebx, int *ecx,
+                               int *edx)
+{
+        *eax = op;
+        *ecx = count;
+        __cpuid(eax, ebx, ecx, edx);
+}
+
+/*
+ * CPUID functions returning a single datum
+ */
+static inline unsigned int cpuid_eax(unsigned int op)
+{
+        unsigned int eax, ebx, ecx, edx;
+
+        cpuid(op, &eax, &ebx, &ecx, &edx);
+        return eax;
+}
+static inline unsigned int cpuid_ebx(unsigned int op)
+{
+        unsigned int eax, ebx, ecx, edx;
+
+        cpuid(op, &eax, &ebx, &ecx, &edx);
+        return ebx;
+}
+static inline unsigned int cpuid_ecx(unsigned int op)
+{
+        unsigned int eax, ebx, ecx, edx;
+
+        cpuid(op, &eax, &ebx, &ecx, &edx);
+        return ecx;
+}
+static inline unsigned int cpuid_edx(unsigned int op)
+{
+        unsigned int eax, ebx, ecx, edx;
+
+        cpuid(op, &eax, &ebx, &ecx, &edx);
+        return edx;
+}
+
 /* generic versions from gas */
 #define GENERIC_NOP1    ".byte 0x90\n"
 #define GENERIC_NOP2            ".byte 0x89,0xf6\n"
@@ -727,4 +742,7 @@ extern unsigned long boot_option_idle_override;
 extern void enable_sep_cpu(void);
 extern int sysenter_setup(void);
 
+extern int init_gdt(int cpu, struct task_struct *idle);
+extern void secondary_cpu_init(void);
+
 #endif /* __ASM_I386_PROCESSOR_H */