5 files changed, 24 insertions, 20 deletions

diff --git a/arch/mips/include/asm/hugetlb.h b/arch/mips/include/asm/hugetlb.h
index bd94946a18f3..ef99db994c2f 100644
--- a/arch/mips/include/asm/hugetlb.h
+++ b/arch/mips/include/asm/hugetlb.h
@@ -95,7 +95,17 @@ static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
                                              pte_t *ptep, pte_t pte,
                                              int dirty)
 {
-        return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
+        int changed = !pte_same(*ptep, pte);
+
+        if (changed) {
+                set_pte_at(vma->vm_mm, addr, ptep, pte);
+                /*
+                 * There could be some standard sized pages in there,
+                 * get them all.
+                 */
+                flush_tlb_range(vma, addr, addr + HPAGE_SIZE);
+        }
+        return changed;
 }
 
 static inline pte_t huge_ptep_get(pte_t *ptep)
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index b1fb7af3c350..cce3782c96c9 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -510,7 +510,6 @@ static inline void cpu_probe_legacy(struct cpuinfo_mips *c, unsigned int cpu)
                                 c->cputype = CPU_R3000A;
                                 __cpu_name[cpu] = "R3000A";
                         }
-                        break;
                 } else {
                         c->cputype = CPU_R3000;
                         __cpu_name[cpu] = "R3000";
diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index a6c133212003..9b00362f32f6 100644
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -36,6 +36,11 @@ FEXPORT(ret_from_exception)
 FEXPORT(ret_from_irq)
         LONG_S  s0, TI_REGS($28)
 FEXPORT(__ret_from_irq)
+/*
+ * We can be coming here from a syscall done in the kernel space,
+ * e.g. a failed kernel_execve().
+ */
+resume_userspace_check:
         LONG_L  t0, PT_STATUS(sp)               # returning to kernel mode?
         andi    t0, t0, KU_USER
         beqz    t0, resume_kernel
@@ -162,7 +167,7 @@ work_notifysig:				# deal with pending signals and
         move    a0, sp
         li      a1, 0
         jal     do_notify_resume        # a2 already loaded
-        j       resume_userspace
+        j       resume_userspace_check
 
 FEXPORT(syscall_exit_partial)
         local_irq_disable               # make sure need_resched doesn't
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index f6ba8381ee01..86ec03f0e00c 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -397,14 +397,14 @@ EXPORT(sysn32_call_table)
         PTR     sys_timerfd_create
         PTR     compat_sys_timerfd_gettime      /* 6285 */
         PTR     compat_sys_timerfd_settime
-        PTR     sys_signalfd4
+        PTR     compat_sys_signalfd4
         PTR     sys_eventfd2
         PTR     sys_epoll_create1
         PTR     sys_dup3                        /* 6290 */
         PTR     sys_pipe2
         PTR     sys_inotify_init1
-        PTR     sys_preadv
-        PTR     sys_pwritev
+        PTR     compat_sys_preadv
+        PTR     compat_sys_pwritev
         PTR     compat_sys_rt_tgsigqueueinfo    /* 6295 */
         PTR     sys_perf_event_open
         PTR     sys_accept4
diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c
index 4b9b935a070e..88e79ad6f811 100644
--- a/arch/mips/mm/tlb-r4k.c
+++ b/arch/mips/mm/tlb-r4k.c
@@ -120,18 +120,11 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
 
         if (cpu_context(cpu, mm) != 0) {
                 unsigned long size, flags;
-                int huge = is_vm_hugetlb_page(vma);
 
                 ENTER_CRITICAL(flags);
-                if (huge) {
-                        start = round_down(start, HPAGE_SIZE);
-                        end = round_up(end, HPAGE_SIZE);
-                        size = (end - start) >> HPAGE_SHIFT;
-                } else {
-                        start = round_down(start, PAGE_SIZE << 1);
-                        end = round_up(end, PAGE_SIZE << 1);
-                        size = (end - start) >> (PAGE_SHIFT + 1);
-                }
+                start = round_down(start, PAGE_SIZE << 1);
+                end = round_up(end, PAGE_SIZE << 1);
+                size = (end - start) >> (PAGE_SHIFT + 1);
                 if (size <= current_cpu_data.tlbsize/2) {
                         int oldpid = read_c0_entryhi();
                         int newpid = cpu_asid(cpu, mm);
@@ -140,10 +133,7 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
                                 int idx;
 
                                 write_c0_entryhi(start | newpid);
-                                if (huge)
-                                        start += HPAGE_SIZE;
-                                else
-                                        start += (PAGE_SIZE << 1);
+                                start += (PAGE_SIZE << 1);
                                 mtc0_tlbw_hazard();
                                 tlb_probe();
                                 tlb_probe_hazard();