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

Pull powerpc updates from Benjamin Herrenschmidt:
 "Some highlights in addition to the usual batch of fixes:

   - 64TB address space support for 64-bit processes by Aneesh Kumar

   - Gavin Shan did a major cleanup & re-organization of our EEH support
     code (IBM fancy PCI error handling & recovery infrastructure) which
     paves the way for supporting different platform backends, along
     with some rework of the PCIe code for the PowerNV platform in order
     to remove home made resource allocations and instead use the
     generic code (which is possible after some small improvements to it
     done by Gavin).

   - Uprobes support by Ananth N Mavinakayanahalli

   - A pile of embedded updates from Freescale folks, including new SoC
     and board supports, more KVM stuff including preparing for 64-bit
     BookE KVM support, ePAPR 1.1 updates, etc..."

Fixup trivial conflicts in drivers/scsi/ipr.c

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (146 commits)
  powerpc/iommu: Fix multiple issues with IOMMU pools code
  powerpc: Fix VMX fix for memcpy case
  driver/mtd:IFC NAND:Initialise internal SRAM before any write
  powerpc/fsl-pci: use 'Header Type' to identify PCIE mode
  powerpc/eeh: Don't release eeh_mutex in eeh_phb_pe_get
  powerpc: Remove tlb batching hack for nighthawk
  powerpc: Set paca->data_offset = 0 for boot cpu
  powerpc/perf: Sample only if SIAR-Valid bit is set in P7+
  powerpc/fsl-pci: fix warning when CONFIG_SWIOTLB is disabled
  powerpc/mpc85xx: Update interrupt handling for IFC controller
  powerpc/85xx: Enable USB support in p1023rds_defconfig
  powerpc/smp: Do not disable IPI interrupts during suspend
  powerpc/eeh: Fix crash on converting OF node to edev
  powerpc/eeh: Lock module while handling EEH event
  powerpc/kprobe: Don't emulate store when kprobe stwu r1
  powerpc/kprobe: Complete kprobe and migrate exception frame
  powerpc/kprobe: Introduce a new thread flag
  powerpc: Remove unused __get_user64() and __put_user64()
  powerpc/eeh: Global mutex to protect PE tree
  powerpc/eeh: Remove EEH PE for normal PCI hotplug
  ...

1 files changed, 126 insertions, 1 deletions

diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 39aa97d3ff8..10b658ad65e 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -275,6 +275,31 @@ vsx_unavailable_pSeries_1:
 	STD_EXCEPTION_PSERIES(0x1300, 0x1300, instruction_breakpoint)
 	KVM_HANDLER_PR_SKIP(PACA_EXGEN, EXC_STD, 0x1300)
 
+	. = 0x1500
+	.global denorm_Hypervisor
+denorm_exception_hv:
+	HMT_MEDIUM
+	mtspr	SPRN_SPRG_HSCRATCH0,r13
+	mfspr	r13,SPRN_SPRG_HPACA
+	std	r9,PACA_EXGEN+EX_R9(r13)
+	std	r10,PACA_EXGEN+EX_R10(r13)
+	std	r11,PACA_EXGEN+EX_R11(r13)
+	std	r12,PACA_EXGEN+EX_R12(r13)
+	mfspr	r9,SPRN_SPRG_HSCRATCH0
+	std	r9,PACA_EXGEN+EX_R13(r13)
+	mfcr	r9
+
+#ifdef CONFIG_PPC_DENORMALISATION
+	mfspr	r10,SPRN_HSRR1
+	mfspr	r11,SPRN_HSRR0		/* save HSRR0 */
+	andis.	r10,r10,(HSRR1_DENORM)@h /* denorm? */
+	addi	r11,r11,-4		/* HSRR0 is next instruction */
+	bne+	denorm_assist
+#endif
+
+	EXCEPTION_PROLOG_PSERIES_1(denorm_common, EXC_HV)
+	KVM_HANDLER_SKIP(PACA_EXGEN, EXC_STD, 0x1500)
+
 #ifdef CONFIG_CBE_RAS
 	STD_EXCEPTION_HV(0x1600, 0x1602, cbe_maintenance)
 	KVM_HANDLER_SKIP(PACA_EXGEN, EXC_HV, 0x1602)
@@ -336,6 +361,103 @@ do_stab_bolted_pSeries:
 	KVM_HANDLER_PR(PACA_EXGEN, EXC_STD, 0x900)
 	KVM_HANDLER(PACA_EXGEN, EXC_HV, 0x982)
 
+#ifdef CONFIG_PPC_DENORMALISATION
+denorm_assist:
+BEGIN_FTR_SECTION
+/*
+ * To denormalise we need to move a copy of the register to itself.
+ * For POWER6 do that here for all FP regs.
+ */
+	mfmsr	r10
+	ori	r10,r10,(MSR_FP|MSR_FE0|MSR_FE1)
+	xori	r10,r10,(MSR_FE0|MSR_FE1)
+	mtmsrd	r10
+	sync
+	fmr	0,0
+	fmr	1,1
+	fmr	2,2
+	fmr	3,3
+	fmr	4,4
+	fmr	5,5
+	fmr	6,6
+	fmr	7,7
+	fmr	8,8
+	fmr	9,9
+	fmr	10,10
+	fmr	11,11
+	fmr	12,12
+	fmr	13,13
+	fmr	14,14
+	fmr	15,15
+	fmr	16,16
+	fmr	17,17
+	fmr	18,18
+	fmr	19,19
+	fmr	20,20
+	fmr	21,21
+	fmr	22,22
+	fmr	23,23
+	fmr	24,24
+	fmr	25,25
+	fmr	26,26
+	fmr	27,27
+	fmr	28,28
+	fmr	29,29
+	fmr	30,30
+	fmr	31,31
+FTR_SECTION_ELSE
+/*
+ * To denormalise we need to move a copy of the register to itself.
+ * For POWER7 do that here for the first 32 VSX registers only.
+ */
+	mfmsr	r10
+	oris	r10,r10,MSR_VSX@h
+	mtmsrd	r10
+	sync
+	XVCPSGNDP(0,0,0)
+	XVCPSGNDP(1,1,1)
+	XVCPSGNDP(2,2,2)
+	XVCPSGNDP(3,3,3)
+	XVCPSGNDP(4,4,4)
+	XVCPSGNDP(5,5,5)
+	XVCPSGNDP(6,6,6)
+	XVCPSGNDP(7,7,7)
+	XVCPSGNDP(8,8,8)
+	XVCPSGNDP(9,9,9)
+	XVCPSGNDP(10,10,10)
+	XVCPSGNDP(11,11,11)
+	XVCPSGNDP(12,12,12)
+	XVCPSGNDP(13,13,13)
+	XVCPSGNDP(14,14,14)
+	XVCPSGNDP(15,15,15)
+	XVCPSGNDP(16,16,16)
+	XVCPSGNDP(17,17,17)
+	XVCPSGNDP(18,18,18)
+	XVCPSGNDP(19,19,19)
+	XVCPSGNDP(20,20,20)
+	XVCPSGNDP(21,21,21)
+	XVCPSGNDP(22,22,22)
+	XVCPSGNDP(23,23,23)
+	XVCPSGNDP(24,24,24)
+	XVCPSGNDP(25,25,25)
+	XVCPSGNDP(26,26,26)
+	XVCPSGNDP(27,27,27)
+	XVCPSGNDP(28,28,28)
+	XVCPSGNDP(29,29,29)
+	XVCPSGNDP(30,30,30)
+	XVCPSGNDP(31,31,31)
+ALT_FTR_SECTION_END_IFCLR(CPU_FTR_ARCH_206)
+	mtspr	SPRN_HSRR0,r11
+	mtcrf	0x80,r9
+	ld	r9,PACA_EXGEN+EX_R9(r13)
+	ld	r10,PACA_EXGEN+EX_R10(r13)
+	ld	r11,PACA_EXGEN+EX_R11(r13)
+	ld	r12,PACA_EXGEN+EX_R12(r13)
+	ld	r13,PACA_EXGEN+EX_R13(r13)
+	HRFID
+	b	.
+#endif
+
 	.align	7
 	/* moved from 0xe00 */
 	STD_EXCEPTION_HV(., 0xe02, h_data_storage)
@@ -495,6 +617,7 @@ machine_check_common:
         STD_EXCEPTION_COMMON(0xe60, hmi_exception, .unknown_exception)
 	STD_EXCEPTION_COMMON_ASYNC(0xf00, performance_monitor, .performance_monitor_exception)
 	STD_EXCEPTION_COMMON(0x1300, instruction_breakpoint, .instruction_breakpoint_exception)
+	STD_EXCEPTION_COMMON(0x1502, denorm, .unknown_exception)
 #ifdef CONFIG_ALTIVEC
 	STD_EXCEPTION_COMMON(0x1700, altivec_assist, .altivec_assist_exception)
 #else
@@ -960,7 +1083,9 @@ _GLOBAL(do_stab_bolted)
 	rldimi	r10,r11,7,52	/* r10 = first ste of the group */
 
 	/* Calculate VSID */
-	/* This is a kernel address, so protovsid = ESID */
+	/* This is a kernel address, so protovsid = ESID | 1 << 37 */
+	li	r9,0x1
+	rldimi  r11,r9,(CONTEXT_BITS + USER_ESID_BITS),0
 	ASM_VSID_SCRAMBLE(r11, r9, 256M)
 	rldic	r9,r11,12,16	/* r9 = vsid << 12 */