Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Pull more powerpc updates from Ben Herrenschmidt:
 "Here are a few more powerpc things for you.

  So you'll find here the conversion of the two new firmware sysfs
  interfaces to the new API for self-removing files that Greg and Tejun
  introduced, so they can finally remove the old one.

  I'm also reverting the hwmon driver for powernv.  I shouldn't have
  merged it, I got a bit carried away here.  I hadn't realized it was
  never CCed to the relevant maintainer(s) and list(s), and happens to
  have some issues so I'm taking it out and it will come back via the
  proper channels.

  The rest is a bunch of LE fixes (argh, some of the new stuff was
  broken on LE, I really need to start testing LE myself !) and various
  random fixes here and there.

  Finally one bit that's not strictly a fix, which is the HVC OPAL
  change to "kick" the HVC thread when the firmware tells us there is
  new incoming data.  I don't feel like waiting for this one, it's
  simple enough, and it makes a big difference in console responsiveness
  which is good for my nerves"

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (26 commits)
  powerpc/powernv Adapt opal-elog and opal-dump to new sysfs_remove_file_self
  Revert "powerpc/powernv: hwmon driver for power values, fan rpm and temperature"
  power, sched: stop updating inside arch_update_cpu_topology() when nothing to be update
  powerpc/le: Avoid creatng R_PPC64_TOCSAVE relocations for modules.
  arch/powerpc: Use RCU_INIT_POINTER(x, NULL) in platforms/cell/spu_syscalls.c
  powerpc/opal: Add missing include
  powerpc: Convert last uses of __FUNCTION__ to __func__
  powerpc: Add lq/stq emulation
  powerpc/powernv: Add invalid OPAL call
  powerpc/powernv: Add OPAL message log interface
  powerpc/book3s: Fix mc_recoverable_range buffer overrun issue.
  powerpc: Remove dead code in sycall entry
  powerpc: Use of_node_init() for the fakenode in msi_bitmap.c
  powerpc/mm: NUMA pte should be handled via slow path in get_user_pages_fast()
  powerpc/powernv: Fix endian issues with sensor code
  powerpc/powernv: Fix endian issues with OPAL async code
  tty/hvc_opal: Kick the HVC thread on OPAL console events
  powerpc/powernv: Add opal_notifier_unregister() and export to modules
  powerpc/ppc64: Do not turn AIL (reloc-on interrupts) too early
  powerpc/ppc64: Gracefully handle early interrupts
  ...

1 files changed, 44 insertions, 8 deletions

diff --git a/arch/powerpc/kernel/align.c b/arch/powerpc/kernel/align.c
index de91f3ae631e..94908af308d8 100644
--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -73,7 +73,7 @@ static struct aligninfo aligninfo[128] = {
 	{ 8, LD+F },		/* 00 0 1001: lfd */
 	{ 4, ST+F+S },		/* 00 0 1010: stfs */
 	{ 8, ST+F },		/* 00 0 1011: stfd */
-	INVALID,		/* 00 0 1100 */
+	{ 16, LD },		/* 00 0 1100: lq */
 	{ 8, LD },		/* 00 0 1101: ld/ldu/lwa */
 	INVALID,		/* 00 0 1110 */
 	{ 8, ST },		/* 00 0 1111: std/stdu */
@@ -140,7 +140,7 @@ static struct aligninfo aligninfo[128] = {
 	{ 2, LD+SW },		/* 10 0 1100: lhbrx */
 	{ 4, LD+SE },		/* 10 0 1101  lwa */
 	{ 2, ST+SW },		/* 10 0 1110: sthbrx */
-	INVALID,		/* 10 0 1111 */
+	{ 16, ST },		/* 10 0 1111: stq */
 	INVALID,		/* 10 1 0000 */
 	INVALID,		/* 10 1 0001 */
 	INVALID,		/* 10 1 0010 */
@@ -385,8 +385,6 @@ static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg,
 	char *ptr1 = (char *) &current->thread.TS_FPR(reg+1);
 	int i, ret, sw = 0;
 
-	if (!(flags & F))
-		return 0;
 	if (reg & 1)
 		return 0;	/* invalid form: FRS/FRT must be even */
 	if (flags & SW)
@@ -406,6 +404,34 @@ static int emulate_fp_pair(unsigned char __user *addr, unsigned int reg,
 	return 1;	/* exception handled and fixed up */
 }
 
+#ifdef CONFIG_PPC64
+static int emulate_lq_stq(struct pt_regs *regs, unsigned char __user *addr,
+			  unsigned int reg, unsigned int flags)
+{
+	char *ptr0 = (char *)&regs->gpr[reg];
+	char *ptr1 = (char *)&regs->gpr[reg+1];
+	int i, ret, sw = 0;
+
+	if (reg & 1)
+		return 0;	/* invalid form: GPR must be even */
+	if (flags & SW)
+		sw = 7;
+	ret = 0;
+	for (i = 0; i < 8; ++i) {
+		if (!(flags & ST)) {
+			ret |= __get_user(ptr0[i^sw], addr + i);
+			ret |= __get_user(ptr1[i^sw], addr + i + 8);
+		} else {
+			ret |= __put_user(ptr0[i^sw], addr + i);
+			ret |= __put_user(ptr1[i^sw], addr + i + 8);
+		}
+	}
+	if (ret)
+		return -EFAULT;
+	return 1;	/* exception handled and fixed up */
+}
+#endif /* CONFIG_PPC64 */
+
 #ifdef CONFIG_SPE
 
 static struct aligninfo spe_aligninfo[32] = {
@@ -914,10 +940,20 @@ int fix_alignment(struct pt_regs *regs)
 		flush_fp_to_thread(current);
 	}
 
-	/* Special case for 16-byte FP loads and stores */
-	if (nb == 16) {
-		PPC_WARN_ALIGNMENT(fp_pair, regs);
-		return emulate_fp_pair(addr, reg, flags);
+	if ((nb == 16)) {
+		if (flags & F) {
+			/* Special case for 16-byte FP loads and stores */
+			PPC_WARN_ALIGNMENT(fp_pair, regs);
+			return emulate_fp_pair(addr, reg, flags);
+		} else {
+#ifdef CONFIG_PPC64
+			/* Special case for 16-byte loads and stores */
+			PPC_WARN_ALIGNMENT(lq_stq, regs);
+			return emulate_lq_stq(regs, addr, reg, flags);
+#else
+			return 0;
+#endif
+		}
 	}
 
 	PPC_WARN_ALIGNMENT(unaligned, regs);