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

* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC]: Wire up sys_sync_file_range() into syscall tables.
  [SPARC]: Wire up sys_splice() into the syscall tables.
  [SPARC64]: Update defconfig.
  [SPARC64]: Align address in huge_pte_alloc().
  [SPARC64]: Document the instruction checks we do in do_sparc64_fault().
  [SPARC64]: Make tsb_sync() mm comparison more precise.

8 files changed, 46 insertions, 12 deletions

diff --git a/arch/sparc/kernel/systbls.S b/arch/sparc/kernel/systbls.S
index 768de64b371f..fbbec5e761c6 100644
--- a/arch/sparc/kernel/systbls.S
+++ b/arch/sparc/kernel/systbls.S
@@ -64,13 +64,13 @@ sys_call_table:
 /*215*/ .long sys_ipc, sys_sigreturn, sys_clone, sys_ioprio_get, sys_adjtimex
 /*220*/ .long sys_sigprocmask, sys_ni_syscall, sys_delete_module, sys_ni_syscall, sys_getpgid
 /*225*/ .long sys_bdflush, sys_sysfs, sys_nis_syscall, sys_setfsuid16, sys_setfsgid16
-/*230*/ .long sys_select, sys_time, sys_nis_syscall, sys_stime, sys_statfs64
+/*230*/ .long sys_select, sys_time, sys_splice, sys_stime, sys_statfs64
                                           /* "We are the Knights of the Forest of Ni!!" */
 /*235*/ .long sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys_mlockall
 /*240*/ .long sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
 /*245*/ .long sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
 /*250*/ .long sparc_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
-/*255*/ .long sys_nis_syscall, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
+/*255*/ .long sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 /*260*/ .long sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
 /*265*/ .long sys_timer_delete, sys_timer_create, sys_nis_syscall, sys_io_setup, sys_io_destroy
 /*270*/ .long sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
diff --git a/arch/sparc64/defconfig b/arch/sparc64/defconfig
index 900fb0b940d8..30389085a359 100644
--- a/arch/sparc64/defconfig
+++ b/arch/sparc64/defconfig
@@ -1,7 +1,7 @@
 #
 # Automatically generated make config: don't edit
 # Linux kernel version: 2.6.16
-# Sun Mar 26 14:58:11 2006
+# Fri Mar 31 01:40:57 2006
 #
 CONFIG_SPARC=y
 CONFIG_SPARC64=y
@@ -180,6 +180,7 @@ CONFIG_SYN_COOKIES=y
 CONFIG_INET_AH=y
 CONFIG_INET_ESP=y
 CONFIG_INET_IPCOMP=y
+CONFIG_INET_XFRM_TUNNEL=y
 CONFIG_INET_TUNNEL=y
 CONFIG_INET_DIAG=y
 CONFIG_INET_TCP_DIAG=y
@@ -203,6 +204,7 @@ CONFIG_IPV6_ROUTE_INFO=y
 CONFIG_INET6_AH=m
 CONFIG_INET6_ESP=m
 CONFIG_INET6_IPCOMP=m
+CONFIG_INET6_XFRM_TUNNEL=m
 CONFIG_INET6_TUNNEL=m
 CONFIG_IPV6_TUNNEL=m
 # CONFIG_NETFILTER is not set
@@ -308,7 +310,6 @@ CONFIG_BLK_DEV_NBD=m
 # CONFIG_BLK_DEV_SX8 is not set
 CONFIG_BLK_DEV_UB=m
 # CONFIG_BLK_DEV_RAM is not set
-CONFIG_BLK_DEV_RAM_COUNT=16
 # CONFIG_BLK_DEV_INITRD is not set
 CONFIG_CDROM_PKTCDVD=m
 CONFIG_CDROM_PKTCDVD_BUFFERS=8
@@ -449,6 +450,7 @@ CONFIG_MD_RAID0=m
 CONFIG_MD_RAID1=m
 CONFIG_MD_RAID10=m
 CONFIG_MD_RAID5=m
+# CONFIG_MD_RAID5_RESHAPE is not set
 CONFIG_MD_RAID6=m
 CONFIG_MD_MULTIPATH=m
 # CONFIG_MD_FAULTY is not set
@@ -741,9 +743,7 @@ CONFIG_I2C_ALGOBIT=y
 # CONFIG_SENSORS_PCF8574 is not set
 # CONFIG_SENSORS_PCA9539 is not set
 # CONFIG_SENSORS_PCF8591 is not set
-# CONFIG_SENSORS_RTC8564 is not set
 # CONFIG_SENSORS_MAX6875 is not set
-# CONFIG_RTC_X1205_I2C is not set
 # CONFIG_I2C_DEBUG_CORE is not set
 # CONFIG_I2C_DEBUG_ALGO is not set
 # CONFIG_I2C_DEBUG_BUS is not set
@@ -826,6 +826,7 @@ CONFIG_FB_CFB_FILLRECT=y
 CONFIG_FB_CFB_COPYAREA=y
 CONFIG_FB_CFB_IMAGEBLIT=y
 # CONFIG_FB_MACMODES is not set
+# CONFIG_FB_FIRMWARE_EDID is not set
 CONFIG_FB_MODE_HELPERS=y
 CONFIG_FB_TILEBLITTING=y
 # CONFIG_FB_CIRRUS is not set
@@ -1117,6 +1118,11 @@ CONFIG_USB_HIDDEV=y
 #
 
 #
+# Real Time Clock
+#
+# CONFIG_RTC_CLASS is not set
+
+#
 # Misc Linux/SPARC drivers
 #
 CONFIG_SUN_OPENPROMIO=m
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 7dc28a484268..8175a6968c6b 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -830,9 +830,16 @@ void smp_call_function_client(int irq, struct pt_regs *regs)
 
 static void tsb_sync(void *info)
 {
+        struct trap_per_cpu *tp = &trap_block[raw_smp_processor_id()];
         struct mm_struct *mm = info;
 
-        if (current->active_mm == mm)
+        /* It is not valid to test "currrent->active_mm == mm" here.
+         *
+         * The value of "current" is not changed atomically with
+         * switch_mm().  But that's OK, we just need to check the
+         * current cpu's trap block PGD physical address.
+         */
+        if (tp->pgd_paddr == __pa(mm->pgd))
                 tsb_context_switch(mm);
 }
 
diff --git a/arch/sparc64/kernel/sys32.S b/arch/sparc64/kernel/sys32.S
index c4a1cef4b1e5..86dd5cb81e09 100644
--- a/arch/sparc64/kernel/sys32.S
+++ b/arch/sparc64/kernel/sys32.S
@@ -136,6 +136,8 @@ SIGN1(sys32_getpeername, sys_getpeername, %o0)
 SIGN1(sys32_getsockname, sys_getsockname, %o0)
 SIGN2(sys32_ioprio_get, sys_ioprio_get, %o0, %o1)
 SIGN3(sys32_ioprio_set, sys_ioprio_set, %o0, %o1, %o2)
+SIGN2(sys32_splice, sys_splice, %o0, %o1)
+SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5)
 
         .globl          sys32_mmap2
 sys32_mmap2:
diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c
index 2e906bad56fa..31030bf00f1a 100644
--- a/arch/sparc64/kernel/sys_sparc32.c
+++ b/arch/sparc64/kernel/sys_sparc32.c
@@ -1069,3 +1069,11 @@ long sys32_lookup_dcookie(unsigned long cookie_high,
         return sys_lookup_dcookie((cookie_high << 32) | cookie_low,
                                   buf, len);
 }
+
+long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, int flags)
+{
+        return sys_sync_file_range(fd,
+                                   (off_high << 32) | off_low,
+                                   (nb_high << 32) | nb_low,
+                                   flags);
+}
diff --git a/arch/sparc64/kernel/systbls.S b/arch/sparc64/kernel/systbls.S
index 3b250f2318fd..857b82c82875 100644
--- a/arch/sparc64/kernel/systbls.S
+++ b/arch/sparc64/kernel/systbls.S
@@ -66,12 +66,12 @@ sys_call_table32:
         .word sys32_ipc, sys32_sigreturn, sys_clone, sys32_ioprio_get, compat_sys_adjtimex
 /*220*/ .word sys32_sigprocmask, sys_ni_syscall, sys32_delete_module, sys_ni_syscall, sys32_getpgid
         .word sys32_bdflush, sys32_sysfs, sys_nis_syscall, sys32_setfsuid16, sys32_setfsgid16
-/*230*/ .word sys32_select, compat_sys_time, sys_nis_syscall, compat_sys_stime, compat_sys_statfs64
+/*230*/ .word sys32_select, compat_sys_time, sys32_splice, compat_sys_stime, compat_sys_statfs64
         .word compat_sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys32_mlockall
 /*240*/ .word sys_munlockall, sys32_sched_setparam, sys32_sched_getparam, sys32_sched_setscheduler, sys32_sched_getscheduler
         .word sys_sched_yield, sys32_sched_get_priority_max, sys32_sched_get_priority_min, sys32_sched_rr_get_interval, compat_sys_nanosleep
 /*250*/ .word sys32_mremap, sys32_sysctl, sys32_getsid, sys_fdatasync, sys32_nfsservctl
-        .word sys_ni_syscall, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
+        .word sys32_sync_file_range, compat_sys_clock_settime, compat_sys_clock_gettime, compat_sys_clock_getres, sys32_clock_nanosleep
 /*260*/ .word compat_sys_sched_getaffinity, compat_sys_sched_setaffinity, sys32_timer_settime, compat_sys_timer_gettime, sys_timer_getoverrun
         .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy
 /*270*/ .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink
@@ -135,12 +135,12 @@ sys_call_table:
         .word sys_ipc, sys_nis_syscall, sys_clone, sys_ioprio_get, sys_adjtimex
 /*220*/ .word sys_nis_syscall, sys_ni_syscall, sys_delete_module, sys_ni_syscall, sys_getpgid
         .word sys_bdflush, sys_sysfs, sys_nis_syscall, sys_setfsuid, sys_setfsgid
-/*230*/ .word sys_select, sys_nis_syscall, sys_nis_syscall, sys_stime, sys_statfs64
+/*230*/ .word sys_select, sys_nis_syscall, sys_splice, sys_stime, sys_statfs64
         .word sys_fstatfs64, sys_llseek, sys_mlock, sys_munlock, sys_mlockall
 /*240*/ .word sys_munlockall, sys_sched_setparam, sys_sched_getparam, sys_sched_setscheduler, sys_sched_getscheduler
         .word sys_sched_yield, sys_sched_get_priority_max, sys_sched_get_priority_min, sys_sched_rr_get_interval, sys_nanosleep
 /*250*/ .word sys64_mremap, sys_sysctl, sys_getsid, sys_fdatasync, sys_nfsservctl
-        .word sys_ni_syscall, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
+        .word sys_sync_file_range, sys_clock_settime, sys_clock_gettime, sys_clock_getres, sys_clock_nanosleep
 /*260*/ .word sys_sched_getaffinity, sys_sched_setaffinity, sys_timer_settime, sys_timer_gettime, sys_timer_getoverrun
         .word sys_timer_delete, sys_timer_create, sys_ni_syscall, sys_io_setup, sys_io_destroy
 /*270*/ .word sys_io_submit, sys_io_cancel, sys_io_getevents, sys_mq_open, sys_mq_unlink
diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c
index 0db2f7d9fab5..6e002aacb961 100644
--- a/arch/sparc64/mm/fault.c
+++ b/arch/sparc64/mm/fault.c
@@ -327,8 +327,12 @@ asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
                 insn = get_fault_insn(regs, 0);
                 if (!insn)
                         goto continue_fault;
+                /* All loads, stores and atomics have bits 30 and 31 both set
+                 * in the instruction.  Bit 21 is set in all stores, but we
+                 * have to avoid prefetches which also have bit 21 set.
+                 */
                 if ((insn & 0xc0200000) == 0xc0200000 &&
-                    (insn & 0x1780000) != 0x1680000) {
+                    (insn & 0x01780000) != 0x01680000) {
                         /* Don't bother updating thread struct value,
                          * because update_mmu_cache only cares which tlb
                          * the access came from.
diff --git a/arch/sparc64/mm/hugetlbpage.c b/arch/sparc64/mm/hugetlbpage.c
index 074620d413d4..fbbbebbad8a4 100644
--- a/arch/sparc64/mm/hugetlbpage.c
+++ b/arch/sparc64/mm/hugetlbpage.c
@@ -198,6 +198,13 @@ pte_t *huge_pte_alloc(struct mm_struct *mm, unsigned long addr)
         pmd_t *pmd;
         pte_t *pte = NULL;
 
+        /* We must align the address, because our caller will run
+         * set_huge_pte_at() on whatever we return, which writes out
+         * all of the sub-ptes for the hugepage range.  So we have
+         * to give it the first such sub-pte.
+         */
+        addr &= HPAGE_MASK;
+
         pgd = pgd_offset(mm, addr);
         pud = pud_alloc(mm, pgd, addr);
         if (pud) {