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

Pull sparc fixes from David Miller:

 - block interrupts properly across the entire MMU context change (both
   the hw MMU context change and the TSB table change) so that we don't
   get a perf event interrupt in the middle. From Rob Gardner.

 - be sure to register hugepages early enough, from Nitin Gupta.

 - UltraSPARC-III user copy exception handling would return garbage for
   the copied length in some circumstances.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix exception handling in UltraSPARC-III memcpy.
  sbus: Convert to using %pOF instead of full_name
  sparc: defconfig: Cleanup from old Kconfig options
  sparc64: Register hugepages during arch init
  sparc64: Prevent perf from running during super critical sections

10 files changed, 54 insertions, 24 deletions

diff --git a/arch/sparc/configs/sparc32_defconfig b/arch/sparc/configs/sparc32_defconfig
index c74d3701ad68..207a43a2d8b3 100644
--- a/arch/sparc/configs/sparc32_defconfig
+++ b/arch/sparc/configs/sparc32_defconfig
@@ -1,4 +1,3 @@
-CONFIG_EXPERIMENTAL=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
 CONFIG_LOG_BUF_SHIFT=14
@@ -23,7 +22,6 @@ CONFIG_IP_PNP_DHCP=y
 CONFIG_INET_AH=y
 CONFIG_INET_ESP=y
 CONFIG_INET_IPCOMP=y
-# CONFIG_INET_LRO is not set
 CONFIG_INET6_AH=m
 CONFIG_INET6_ESP=m
 CONFIG_INET6_IPCOMP=m
@@ -69,7 +67,6 @@ CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y
 CONFIG_EXT2_FS_SECURITY=y
-CONFIG_AUTOFS_FS=m
 CONFIG_AUTOFS4_FS=m
 CONFIG_ISO9660_FS=m
 CONFIG_PROC_KCORE=y
@@ -82,7 +79,6 @@ CONFIG_NLS=y
 CONFIG_DEBUG_KERNEL=y
 CONFIG_DETECT_HUNG_TASK=y
 # CONFIG_SCHED_DEBUG is not set
-# CONFIG_RCU_CPU_STALL_DETECTOR is not set
 CONFIG_KGDB=y
 CONFIG_KGDB_TESTS=y
 CONFIG_CRYPTO_NULL=m
diff --git a/arch/sparc/configs/sparc64_defconfig b/arch/sparc/configs/sparc64_defconfig
index b2e650d1764f..ca8609d7292f 100644
--- a/arch/sparc/configs/sparc64_defconfig
+++ b/arch/sparc/configs/sparc64_defconfig
@@ -1,5 +1,4 @@
 CONFIG_64BIT=y
-CONFIG_EXPERIMENTAL=y
 # CONFIG_LOCALVERSION_AUTO is not set
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
@@ -184,7 +183,6 @@ CONFIG_HID_TOPSEED=y
 CONFIG_HID_THRUSTMASTER=y
 CONFIG_HID_ZEROPLUS=y
 CONFIG_USB=y
-# CONFIG_USB_DEVICE_CLASS is not set
 CONFIG_USB_EHCI_HCD=m
 # CONFIG_USB_EHCI_TT_NEWSCHED is not set
 CONFIG_USB_OHCI_HCD=y
@@ -210,8 +208,6 @@ CONFIG_LOCKUP_DETECTOR=y
 CONFIG_DETECT_HUNG_TASK=y
 # CONFIG_SCHED_DEBUG is not set
 CONFIG_SCHEDSTATS=y
-# CONFIG_RCU_CPU_STALL_DETECTOR is not set
-CONFIG_SYSCTL_SYSCALL_CHECK=y
 CONFIG_BLK_DEV_IO_TRACE=y
 CONFIG_UPROBE_EVENTS=y
 CONFIG_KEYS=y
diff --git a/arch/sparc/include/asm/mmu_context_64.h b/arch/sparc/include/asm/mmu_context_64.h
index 2cddcda4f85f..87841d687f8d 100644
--- a/arch/sparc/include/asm/mmu_context_64.h
+++ b/arch/sparc/include/asm/mmu_context_64.h
@@ -27,9 +27,11 @@ void destroy_context(struct mm_struct *mm);
 void __tsb_context_switch(unsigned long pgd_pa,
                           struct tsb_config *tsb_base,
                           struct tsb_config *tsb_huge,
-                          unsigned long tsb_descr_pa);
+                          unsigned long tsb_descr_pa,
+                          unsigned long secondary_ctx);
 
-static inline void tsb_context_switch(struct mm_struct *mm)
+static inline void tsb_context_switch_ctx(struct mm_struct *mm,
+                                          unsigned long ctx)
 {
         __tsb_context_switch(__pa(mm->pgd),
                              &mm->context.tsb_block[MM_TSB_BASE],
@@ -40,9 +42,12 @@ static inline void tsb_context_switch(struct mm_struct *mm)
 #else
                              NULL
 #endif
-                             , __pa(&mm->context.tsb_descr[MM_TSB_BASE]));
+                             , __pa(&mm->context.tsb_descr[MM_TSB_BASE]),
+                             ctx);
 }
 
+#define tsb_context_switch(X) tsb_context_switch_ctx(X, 0)
+
 void tsb_grow(struct mm_struct *mm,
               unsigned long tsb_index,
               unsigned long mm_rss);
@@ -112,8 +117,7 @@ static inline void switch_mm(struct mm_struct *old_mm, struct mm_struct *mm, str
          * cpu0 to update it's TSB because at that point the cpu_vm_mask
          * only had cpu1 set in it.
          */
-        load_secondary_context(mm);
-        tsb_context_switch(mm);
+        tsb_context_switch_ctx(mm, CTX_HWBITS(mm->context));
 
         /* Any time a processor runs a context on an address space
          * for the first time, we must flush that context out of the
diff --git a/arch/sparc/kernel/tsb.S b/arch/sparc/kernel/tsb.S
index 07c0df924960..db872dbfafe9 100644
--- a/arch/sparc/kernel/tsb.S
+++ b/arch/sparc/kernel/tsb.S
@@ -360,6 +360,7 @@ tsb_flush:
          * %o1: TSB base config pointer
          * %o2: TSB huge config pointer, or NULL if none
          * %o3: Hypervisor TSB descriptor physical address
+         * %o4: Secondary context to load, if non-zero
          *
          * We have to run this whole thing with interrupts
          * disabled so that the current cpu doesn't change
@@ -372,6 +373,17 @@ __tsb_context_switch:
         rdpr    %pstate, %g1
         wrpr    %g1, PSTATE_IE, %pstate
 
+        brz,pn  %o4, 1f
+         mov    SECONDARY_CONTEXT, %o5
+
+661:    stxa    %o4, [%o5] ASI_DMMU
+        .section .sun4v_1insn_patch, "ax"
+        .word   661b
+        stxa    %o4, [%o5] ASI_MMU
+        .previous
+        flush   %g6
+
+1:
         TRAP_LOAD_TRAP_BLOCK(%g2, %g3)
 
         stx     %o0, [%g2 + TRAP_PER_CPU_PGD_PADDR]
diff --git a/arch/sparc/lib/U3memcpy.S b/arch/sparc/lib/U3memcpy.S
index 54f98706b03b..5a8cb37f0a3b 100644
--- a/arch/sparc/lib/U3memcpy.S
+++ b/arch/sparc/lib/U3memcpy.S
@@ -145,13 +145,13 @@ ENDPROC(U3_retl_o2_plus_GS_plus_0x08)
 ENTRY(U3_retl_o2_and_7_plus_GS)
         and     %o2, 7, %o2
         retl
-         add    %o2, GLOBAL_SPARE, %o2
+         add    %o2, GLOBAL_SPARE, %o0
 ENDPROC(U3_retl_o2_and_7_plus_GS)
 ENTRY(U3_retl_o2_and_7_plus_GS_plus_8)
         add     GLOBAL_SPARE, 8, GLOBAL_SPARE
         and     %o2, 7, %o2
         retl
-         add    %o2, GLOBAL_SPARE, %o2
+         add    %o2, GLOBAL_SPARE, %o0
 ENDPROC(U3_retl_o2_and_7_plus_GS_plus_8)
 #endif
 
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 3c40ebd50f92..fed73f14aa49 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -325,6 +325,29 @@ static void __update_mmu_tsb_insert(struct mm_struct *mm, unsigned long tsb_inde
 }
 
 #ifdef CONFIG_HUGETLB_PAGE
+static void __init add_huge_page_size(unsigned long size)
+{
+        unsigned int order;
+
+        if (size_to_hstate(size))
+                return;
+
+        order = ilog2(size) - PAGE_SHIFT;
+        hugetlb_add_hstate(order);
+}
+
+static int __init hugetlbpage_init(void)
+{
+        add_huge_page_size(1UL << HPAGE_64K_SHIFT);
+        add_huge_page_size(1UL << HPAGE_SHIFT);
+        add_huge_page_size(1UL << HPAGE_256MB_SHIFT);
+        add_huge_page_size(1UL << HPAGE_2GB_SHIFT);
+
+        return 0;
+}
+
+arch_initcall(hugetlbpage_init);
+
 static int __init setup_hugepagesz(char *string)
 {
         unsigned long long hugepage_size;
@@ -364,7 +387,7 @@ static int __init setup_hugepagesz(char *string)
                 goto out;
         }
 
-        hugetlb_add_hstate(hugepage_shift - PAGE_SHIFT);
+        add_huge_page_size(hugepage_size);
         rc = 1;
 
 out:
diff --git a/arch/sparc/power/hibernate.c b/arch/sparc/power/hibernate.c
index 17bd2e167e07..df707a8ad311 100644
--- a/arch/sparc/power/hibernate.c
+++ b/arch/sparc/power/hibernate.c
@@ -35,6 +35,5 @@ void restore_processor_state(void)
 {
         struct mm_struct *mm = current->active_mm;
 
-        load_secondary_context(mm);
-        tsb_context_switch(mm);
+        tsb_context_switch_ctx(mm, CTX_HWBITS(mm->context));
 }
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 04efed171c88..f32765d3cbd8 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -212,8 +212,8 @@ static int d7s_probe(struct platform_device *op)
 
         writeb(regs,  p->regs);
 
-        printk(KERN_INFO PFX "7-Segment Display%s at [%s:0x%llx] %s\n",
-               op->dev.of_node->full_name,
+        printk(KERN_INFO PFX "7-Segment Display%pOF at [%s:0x%llx] %s\n",
+               op->dev.of_node,
                (regs & D7S_FLIP) ? " (FLIPPED)" : "",
                op->resource[0].start,
                sol_compat ? "in sol_compat mode" : "");
diff --git a/drivers/sbus/char/flash.c b/drivers/sbus/char/flash.c
index 216f923161d1..a610b8d3d11f 100644
--- a/drivers/sbus/char/flash.c
+++ b/drivers/sbus/char/flash.c
@@ -181,8 +181,8 @@ static int flash_probe(struct platform_device *op)
         }
         flash.busy = 0;
 
-        printk(KERN_INFO "%s: OBP Flash, RD %lx[%lx] WR %lx[%lx]\n",
-               op->dev.of_node->full_name,
+        printk(KERN_INFO "%pOF: OBP Flash, RD %lx[%lx] WR %lx[%lx]\n",
+               op->dev.of_node,
                flash.read_base, flash.read_size,
                flash.write_base, flash.write_size);
 
diff --git a/drivers/sbus/char/uctrl.c b/drivers/sbus/char/uctrl.c
index 57696fc0b482..0a5013350acd 100644
--- a/drivers/sbus/char/uctrl.c
+++ b/drivers/sbus/char/uctrl.c
@@ -379,8 +379,8 @@ static int uctrl_probe(struct platform_device *op)
         }
 
         sbus_writel(UCTRL_INTR_RXNE_REQ|UCTRL_INTR_RXNE_MSK, &p->regs->uctrl_intr);
-        printk(KERN_INFO "%s: uctrl regs[0x%p] (irq %d)\n",
-               op->dev.of_node->full_name, p->regs, p->irq);
+        printk(KERN_INFO "%pOF: uctrl regs[0x%p] (irq %d)\n",
+               op->dev.of_node, p->regs, p->irq);
         uctrl_get_event_status(p);
         uctrl_get_external_status(p);