Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: exec PT_DTRACE
  [SPARC64]: Use shorter list_splice_init() for brevity.
  [SPARC64]: Remove most limitations to kernel image size.

9 files changed, 97 insertions, 167 deletions

diff --git a/arch/sparc64/kernel/ds.c b/arch/sparc64/kernel/ds.c
index bd76482077be..edb74f5a1186 100644
--- a/arch/sparc64/kernel/ds.c
+++ b/arch/sparc64/kernel/ds.c
@@ -972,8 +972,7 @@ static void process_ds_work(void)
         LIST_HEAD(todo);
 
         spin_lock_irqsave(&ds_lock, flags);
-        list_splice(&ds_work_list, &todo);
-        INIT_LIST_HEAD(&ds_work_list);
+        list_splice_init(&ds_work_list, &todo);
         spin_unlock_irqrestore(&ds_lock, flags);
 
         list_for_each_entry_safe(qp, tmp, &todo, list) {
diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S
index 44b105c04dd3..34f8ff57c56b 100644
--- a/arch/sparc64/kernel/head.S
+++ b/arch/sparc64/kernel/head.S
@@ -288,8 +288,12 @@ sun4v_chip_type:
         /* Leave arg2 as-is, prom_mmu_ihandle_cache */
         mov     -1, %l3
         stx     %l3, [%sp + 2047 + 128 + 0x28]  ! arg3: mode (-1 default)
-        sethi   %hi(8 * 1024 * 1024), %l3
-        stx     %l3, [%sp + 2047 + 128 + 0x30]  ! arg4: size (8MB)
+        /* 4MB align the kernel image size. */
+        set     (_end - KERNBASE), %l3
+        set     ((4 * 1024 * 1024) - 1), %l4
+        add     %l3, %l4, %l3
+        andn    %l3, %l4, %l3
+        stx     %l3, [%sp + 2047 + 128 + 0x30]  ! arg4: roundup(ksize, 4MB)
         sethi   %hi(KERNBASE), %l3
         stx     %l3, [%sp + 2047 + 128 + 0x38]  ! arg5: vaddr (KERNBASE)
         stx     %g0, [%sp + 2047 + 128 + 0x40]  ! arg6: empty
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c
index e116e38b160e..acf8c5250aa9 100644
--- a/arch/sparc64/kernel/process.c
+++ b/arch/sparc64/kernel/process.c
@@ -731,9 +731,6 @@ asmlinkage int sparc_execve(struct pt_regs *regs)
                 current_thread_info()->xfsr[0] = 0;
                 current_thread_info()->fpsaved[0] = 0;
                 regs->tstate &= ~TSTATE_PEF;
-                task_lock(current);
-                current->ptrace &= ~PT_DTRACE;
-                task_unlock(current);
         }
 out:
         return error;
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index cc454731d879..5a1126b363a4 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -284,14 +284,17 @@ static void ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
 {
         extern unsigned long sparc64_ttable_tl0;
         extern unsigned long kern_locked_tte_data;
-        extern int bigkernel;
         struct hvtramp_descr *hdesc;
         unsigned long trampoline_ra;
         struct trap_per_cpu *tb;
         u64 tte_vaddr, tte_data;
         unsigned long hv_err;
+        int i;
 
-        hdesc = kzalloc(sizeof(*hdesc), GFP_KERNEL);
+        hdesc = kzalloc(sizeof(*hdesc) +
+                        (sizeof(struct hvtramp_mapping) *
+                         num_kernel_image_mappings - 1),
+                        GFP_KERNEL);
         if (!hdesc) {
                 printk(KERN_ERR "ldom_startcpu_cpuid: Cannot allocate "
                        "hvtramp_descr.\n");
@@ -299,7 +302,7 @@ static void ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
         }
 
         hdesc->cpu = cpu;
-        hdesc->num_mappings = (bigkernel ? 2 : 1);
+        hdesc->num_mappings = num_kernel_image_mappings;
 
         tb = &trap_block[cpu];
         tb->hdesc = hdesc;
@@ -312,13 +315,11 @@ static void ldom_startcpu_cpuid(unsigned int cpu, unsigned long thread_reg)
         tte_vaddr = (unsigned long) KERNBASE;
         tte_data = kern_locked_tte_data;
 
-        hdesc->maps[0].vaddr = tte_vaddr;
-        hdesc->maps[0].tte   = tte_data;
-        if (bigkernel) {
+        for (i = 0; i < hdesc->num_mappings; i++) {
+                hdesc->maps[i].vaddr = tte_vaddr;
+                hdesc->maps[i].tte   = tte_data;
                 tte_vaddr += 0x400000;
                 tte_data  += 0x400000;
-                hdesc->maps[1].vaddr = tte_vaddr;
-                hdesc->maps[1].tte   = tte_data;
         }
 
         trampoline_ra = kimage_addr_to_ra(hv_cpu_startup);
diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c
index deaba2bd0535..2455fa498876 100644
--- a/arch/sparc64/kernel/sys_sparc32.c
+++ b/arch/sparc64/kernel/sys_sparc32.c
@@ -678,9 +678,6 @@ asmlinkage long sparc32_execve(struct pt_regs *regs)
                 current_thread_info()->xfsr[0] = 0;
                 current_thread_info()->fpsaved[0] = 0;
                 regs->tstate &= ~TSTATE_PEF;
-                task_lock(current);
-                current->ptrace &= ~PT_DTRACE;
-                task_unlock(current);
         }
 out:
         return error;
diff --git a/arch/sparc64/kernel/trampoline.S b/arch/sparc64/kernel/trampoline.S
index 4ae2e525d68b..56ff55211341 100644
--- a/arch/sparc64/kernel/trampoline.S
+++ b/arch/sparc64/kernel/trampoline.S
@@ -105,7 +105,7 @@ startup_continue:
         wr              %g2, 0, %tick_cmpr
 
         /* Call OBP by hand to lock KERNBASE into i/d tlbs.
-         * We lock 2 consequetive entries if we are 'bigkernel'.
+         * We lock 'num_kernel_image_mappings' consequetive entries.
          */
         sethi           %hi(prom_entry_lock), %g2
 1:      ldstub          [%g2 + %lo(prom_entry_lock)], %g1
@@ -119,6 +119,29 @@ startup_continue:
         add             %l2, -(192 + 128), %sp
         flushw
 
+        /* Setup the loop variables:
+         * %l3: VADDR base
+         * %l4: TTE base
+         * %l5: Loop iterator, iterates from 0 to 'num_kernel_image_mappings'
+         * %l6: Number of TTE entries to map
+         * %l7: Highest TTE entry number, we count down
+         */
+        sethi           %hi(KERNBASE), %l3
+        sethi           %hi(kern_locked_tte_data), %l4
+        ldx             [%l4 + %lo(kern_locked_tte_data)], %l4
+        clr             %l5
+        sethi           %hi(num_kernel_image_mappings), %l6
+        lduw            [%l6 + %lo(num_kernel_image_mappings)], %l6
+        add             %l6, 1, %l6
+
+        mov             15, %l7
+        BRANCH_IF_ANY_CHEETAH(g1,g5,2f)
+
+        mov             63, %l7
+2:
+
+3:
+        /* Lock into I-MMU */
         sethi           %hi(call_method), %g2
         or              %g2, %lo(call_method), %g2
         stx             %g2, [%sp + 2047 + 128 + 0x00]
@@ -132,63 +155,26 @@ startup_continue:
         sethi           %hi(prom_mmu_ihandle_cache), %g2
         lduw            [%g2 + %lo(prom_mmu_ihandle_cache)], %g2
         stx             %g2, [%sp + 2047 + 128 + 0x20]
-        sethi           %hi(KERNBASE), %g2