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-rw-r--r--arch/parisc/Kconfig1
-rw-r--r--arch/parisc/include/asm/traps.h2
-rw-r--r--arch/parisc/kernel/cache.c1
-rw-r--r--arch/parisc/kernel/signal.c2
-rw-r--r--arch/parisc/kernel/smp.c8
-rw-r--r--arch/parisc/kernel/traps.c11
-rw-r--r--arch/parisc/lib/memcpy.c15
-rw-r--r--arch/parisc/mm/fault.c25
8 files changed, 38 insertions, 27 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index aa399a5..ad2ce8d 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -14,7 +14,6 @@ config PARISC
select HAVE_PERF_EVENTS
select GENERIC_ATOMIC64 if !64BIT
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
- select HAVE_GENERIC_HARDIRQS
select BROKEN_RODATA
select GENERIC_IRQ_PROBE
select GENERIC_PCI_IOMAP
diff --git a/arch/parisc/include/asm/traps.h b/arch/parisc/include/asm/traps.h
index 1945f99..4736020 100644
--- a/arch/parisc/include/asm/traps.h
+++ b/arch/parisc/include/asm/traps.h
@@ -6,7 +6,7 @@ struct pt_regs;
/* traps.c */
void parisc_terminate(char *msg, struct pt_regs *regs,
- int code, unsigned long offset);
+ int code, unsigned long offset) __noreturn __cold;
/* mm/fault.c */
void do_page_fault(struct pt_regs *regs, unsigned long code,
diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
index c035673..b521c0a 100644
--- a/arch/parisc/kernel/cache.c
+++ b/arch/parisc/kernel/cache.c
@@ -602,6 +602,7 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long
__flush_cache_page(vma, vmaddr, PFN_PHYS(pfn));
}
}
+EXPORT_SYMBOL_GPL(flush_cache_page);
#ifdef CONFIG_PARISC_TMPALIAS
diff --git a/arch/parisc/kernel/signal.c b/arch/parisc/kernel/signal.c
index 07349b0..1cba8f2 100644
--- a/arch/parisc/kernel/signal.c
+++ b/arch/parisc/kernel/signal.c
@@ -78,7 +78,7 @@ restore_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs)
err |= __copy_from_user(regs->iaoq, sc->sc_iaoq, sizeof(regs->iaoq));
err |= __copy_from_user(regs->iasq, sc->sc_iasq, sizeof(regs->iasq));
err |= __get_user(regs->sar, &sc->sc_sar);
- DBG(2,"restore_sigcontext: iaoq is 0x%#lx / 0x%#lx\n",
+ DBG(2,"restore_sigcontext: iaoq is %#lx / %#lx\n",
regs->iaoq[0],regs->iaoq[1]);
DBG(2,"restore_sigcontext: r28 is %ld\n", regs->gr[28]);
return err;
diff --git a/arch/parisc/kernel/smp.c b/arch/parisc/kernel/smp.c
index 8a252f2..2b96602 100644
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -72,7 +72,6 @@ enum ipi_message_type {
IPI_NOP=0,
IPI_RESCHEDULE=1,
IPI_CALL_FUNC,
- IPI_CALL_FUNC_SINGLE,
IPI_CPU_START,
IPI_CPU_STOP,
IPI_CPU_TEST
@@ -164,11 +163,6 @@ ipi_interrupt(int irq, void *dev_id)
generic_smp_call_function_interrupt();
break;
- case IPI_CALL_FUNC_SINGLE:
- smp_debug(100, KERN_DEBUG "CPU%d IPI_CALL_FUNC_SINGLE\n", this_cpu);
- generic_smp_call_function_single_interrupt();
- break;
-
case IPI_CPU_START:
smp_debug(100, KERN_DEBUG "CPU%d IPI_CPU_START\n", this_cpu);
break;
@@ -260,7 +254,7 @@ void arch_send_call_function_ipi_mask(const struct cpumask *mask)
void arch_send_call_function_single_ipi(int cpu)
{
- send_IPI_single(cpu, IPI_CALL_FUNC_SINGLE);
+ send_IPI_single(cpu, IPI_CALL_FUNC);
}
/*
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 04e47c6..1cd1d0c 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -291,11 +291,6 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
do_exit(SIGSEGV);
}
-int syscall_ipi(int (*syscall) (struct pt_regs *), struct pt_regs *regs)
-{
- return syscall(regs);
-}
-
/* gdb uses break 4,8 */
#define GDB_BREAK_INSN 0x10004
static void handle_gdb_break(struct pt_regs *regs, int wot)
@@ -805,14 +800,14 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
else {
/*
- * The kernel should never fault on its own address space.
+ * The kernel should never fault on its own address space,
+ * unless pagefault_disable() was called before.
*/
- if (fault_space == 0)
+ if (fault_space == 0 && !in_atomic())
{
pdc_chassis_send_status(PDC_CHASSIS_DIRECT_PANIC);
parisc_terminate("Kernel Fault", regs, code, fault_address);
-
}
}
diff --git a/arch/parisc/lib/memcpy.c b/arch/parisc/lib/memcpy.c
index ac4370b..b5507ec 100644
--- a/arch/parisc/lib/memcpy.c
+++ b/arch/parisc/lib/memcpy.c
@@ -56,7 +56,7 @@
#ifdef __KERNEL__
#include <linux/module.h>
#include <linux/compiler.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#define s_space "%%sr1"
#define d_space "%%sr2"
#else
@@ -524,4 +524,17 @@ EXPORT_SYMBOL(copy_to_user);
EXPORT_SYMBOL(copy_from_user);
EXPORT_SYMBOL(copy_in_user);
EXPORT_SYMBOL(memcpy);
+
+long probe_kernel_read(void *dst, const void *src, size_t size)
+{
+ unsigned long addr = (unsigned long)src;
+
+ if (size < 0 || addr < PAGE_SIZE)
+ return -EFAULT;
+
+ /* check for I/O space F_EXTEND(0xfff00000) access as well? */
+
+ return __probe_kernel_read(dst, src, size);
+}
+
#endif
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index f247a34..0293588 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -171,15 +171,27 @@ void do_page_fault(struct pt_regs *regs, unsigned long code,
unsigned long address)
{
struct vm_area_struct *vma, *prev_vma;
- struct task_struct *tsk = current;
- struct mm_struct *mm = tsk->mm;
+ struct task_struct *tsk;
+ struct mm_struct *mm;
unsigned long acc_type;
int fault;
- unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
+ unsigned int flags;
- if (in_atomic() || !mm)
+ if (in_atomic())
goto no_context;
+ tsk = current;
+ mm = tsk->mm;
+ if (!mm)
+ goto no_context;
+
+ flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
+ if (user_mode(regs))
+ flags |= FAULT_FLAG_USER;
+
+ acc_type = parisc_acctyp(code, regs->iir);
+ if (acc_type & VM_WRITE)
+ flags |= FAULT_FLAG_WRITE;
retry:
down_read(&mm->mmap_sem);
vma = find_vma_prev(mm, address, &prev_vma);
@@ -192,8 +204,6 @@ retry:
good_area:
- acc_type = parisc_acctyp(code,regs->iir);
-
if ((vma->vm_flags & acc_type) != acc_type)
goto bad_area;
@@ -203,8 +213,7 @@ good_area:
* fault.
*/
- fault = handle_mm_fault(mm, vma, address,
- flags | ((acc_type & VM_WRITE) ? FAULT_FLAG_WRITE : 0));
+ fault = handle_mm_fault(mm, vma, address, flags);
if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
return;
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