Merge tag 'powerpc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
 "Highlights include:

   - Support for direct mapped LPC on POWER9, giving Linux direct access
     to devices that may be on there such as a UART.

   - Memory hotplug support for the Power9 Radix MMU.

   - Add new AUX vectors describing the processor's cache geometry, to
     be used by glibc.

   - The ability for a guest to ask the hypervisor to resize the guest's
     hash table, and in addition support for doing so automatically when
     memory is hotplugged into/out-of the guest. This allows the hash
     table to be sized based on the current memory usage of the guest,
     rather than the maximum possible memory usage.

   - Implementation of optprobes (kprobe optimisation) for powerpc.

  In addition there's the topic branch shared with the KVM tree, which
  includes support for guests to use the Radix MMU on Power9.

  Thanks to:
    Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T, Anton
    Blanchard, Benjamin Herrenschmidt, Chris Packham, Daniel Axtens,
    Daniel Borkmann, David Gibson, Finn Thain, Gautham R. Shenoy, Gavin
    Shan, Greg Kurz, Joel Stanley, John Allen, Madhavan Srinivasan,
    Mahesh Salgaonkar, Markus Elfring, Michael Neuling, Nathan Fontenot,
    Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Ravi Bangoria, Reza
    Arbab, Shailendra Singh, Vaibhav Jain, Wei Yongjun"

* tag 'powerpc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (129 commits)
  powerpc/mm/radix: Skip ptesync in pte update helpers
  powerpc/mm/radix: Use ptep_get_and_clear_full when clearing pte for full mm
  powerpc/mm/radix: Update pte update sequence for pte clear case
  powerpc/mm: Update PROTFAULT handling in the page fault path
  powerpc/xmon: Fix data-breakpoint
  powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y
  powerpc/mm: Fix build break when CMA=n && SPAPR_TCE_IOMMU=y
  powerpc/mm: Fix build break with RADIX=y & HUGETLBFS=n
  powerpc/pseries: Fix typo in parameter description
  powerpc/kprobes: Remove kprobe_exceptions_notify()
  kprobes: Introduce weak variant of kprobe_exceptions_notify()
  powerpc/ftrace: Fix confusing help text for DISABLE_MPROFILE_KERNEL
  powerpc/powernv: Fix opal_exit tracepoint opcode
  powerpc: Add a prototype for mcount() so it can be versioned
  powerpc: Drop GPL from of_node_to_nid() export to match other arches
  powerpc/kprobes: Optimize kprobe in kretprobe_trampoline()
  powerpc/kprobes: Implement Optprobes
  powerpc/kprobes: Fixes for kprobe_lookup_name() on BE
  powerpc: Add helper to check if offset is within relative branch range
  powerpc/bpf: Introduce __PPC_SH64()
  ...

21 files changed, 511 insertions, 110 deletions

diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index a0589aac4163..69794d9389c2 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -24,6 +24,7 @@
 #include <asm/machdep.h>
 #include <asm/iommu.h>
 #include <asm/ppc-pci.h>
+#include <asm/isa-bridge.h>
 
 #include "maple.h"
 
diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c
index 479c25601612..4ee837e6391a 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -237,15 +237,21 @@ static DEVICE_ATTR(fastsleep_workaround_applyonce, 0600,
 			show_fastsleep_workaround_applyonce,
 			store_fastsleep_workaround_applyonce);
 
+/*
+ * The default stop state that will be used by ppc_md.power_save
+ * function on platforms that support stop instruction.
+ */
+u64 pnv_default_stop_val;
+u64 pnv_default_stop_mask;
 
 /*
  * Used for ppc_md.power_save which needs a function with no parameters
  */
 static void power9_idle(void)
 {
-	/* Requesting stop state 0 */
-	power9_idle_stop(0);
+	power9_idle_stop(pnv_default_stop_val, pnv_default_stop_mask);
 }
+
 /*
  * First deep stop state. Used to figure out when to save/restore
  * hypervisor context.
@@ -253,9 +259,11 @@ static void power9_idle(void)
 u64 pnv_first_deep_stop_state = MAX_STOP_STATE;
 
 /*
- * Deepest stop idle state. Used when a cpu is offlined
+ * psscr value and mask of the deepest stop idle state.
+ * Used when a cpu is offlined.
  */
-u64 pnv_deepest_stop_state;
+u64 pnv_deepest_stop_psscr_val;
+u64 pnv_deepest_stop_psscr_mask;
 
 /*
  * Power ISA 3.0 idle initialization.
@@ -292,53 +300,157 @@ u64 pnv_deepest_stop_state;
  *	Bits 60:63 - Requested Level
  *	Used to specify which power-saving level must be entered on executing
  *	stop instruction
+ */
+
+int validate_psscr_val_mask(u64 *psscr_val, u64 *psscr_mask, u32 flags)
+{
+	int err = 0;
+
+	/*
+	 * psscr_mask == 0xf indicates an older firmware.
+	 * Set remaining fields of psscr to the default values.
+	 * See NOTE above definition of PSSCR_HV_DEFAULT_VAL
+	 */
+	if (*psscr_mask == 0xf) {
+		*psscr_val = *psscr_val | PSSCR_HV_DEFAULT_VAL;
+		*psscr_mask = PSSCR_HV_DEFAULT_MASK;
+		return err;
+	}
+
+	/*
+	 * New firmware is expected to set the psscr_val bits correctly.
+	 * Validate that the following invariants are correctly maintained by
+	 * the new firmware.
+	 * - ESL bit value matches the EC bit value.
+	 * - ESL bit is set for all the deep stop states.
+	 */
+	if (GET_PSSCR_ESL(*psscr_val) != GET_PSSCR_EC(*psscr_val)) {
+		err = ERR_EC_ESL_MISMATCH;
+	} else if ((flags & OPAL_PM_LOSE_FULL_CONTEXT) &&
+		GET_PSSCR_ESL(*psscr_val) == 0) {
+		err = ERR_DEEP_STATE_ESL_MISMATCH;
+	}
+
+	return err;
+}
+
+/*
+ * pnv_arch300_idle_init: Initializes the default idle state, first
+ *                        deep idle state and deepest idle state on
+ *                        ISA 3.0 CPUs.
  *
  * @np: /ibm,opal/power-mgt device node
  * @flags: cpu-idle-state-flags array
  * @dt_idle_states: Number of idle state entries
  * Returns 0 on success
  */
-static int __init pnv_arch300_idle_init(struct device_node *np, u32 *flags,
+static int __init pnv_power9_idle_init(struct device_node *np, u32 *flags,
 					int dt_idle_states)
 {
 	u64 *psscr_val = NULL;
+	u64 *psscr_mask = NULL;
+	u32 *residency_ns = NULL;
+	u64 max_residency_ns = 0;
 	int rc = 0, i;
+	bool default_stop_found = false, deepest_stop_found = false;
 
-	psscr_val = kcalloc(dt_idle_states, sizeof(*psscr_val),
-				GFP_KERNEL);
-	if (!psscr_val) {
+	psscr_val = kcalloc(dt_idle_states, sizeof(*psscr_val), GFP_KERNEL);
+	psscr_mask = kcalloc(dt_idle_states, sizeof(*psscr_mask), GFP_KERNEL);
+	residency_ns = kcalloc(dt_idle_states, sizeof(*residency_ns),
+			       GFP_KERNEL);
+
+	if (!psscr_val || !psscr_mask || !residency_ns) {
 		rc = -1;
 		goto out;
 	}
+
 	if (of_property_read_u64_array(np,
 		"ibm,cpu-idle-state-psscr",
 		psscr_val, dt_idle_states)) {
-		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-states-psscr in DT\n");
+		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr in DT\n");
+		rc = -1;
+		goto out;
+	}
+
+	if (of_property_read_u64_array(np,
+				       "ibm,cpu-idle-state-psscr-mask",
+				       psscr_mask, dt_idle_states)) {
+		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-psscr-mask in DT\n");
+		rc = -1;
+		goto out;
+	}
+
+	if (of_property_read_u32_array(np,
+				       "ibm,cpu-idle-state-residency-ns",
+					residency_ns, dt_idle_states)) {
+		pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-residency-ns in DT\n");
 		rc = -1;
 		goto out;
 	}
 
 	/*
-	 * Set pnv_first_deep_stop_state and pnv_deepest_stop_state.
+	 * Set pnv_first_deep_stop_state, pnv_deepest_stop_psscr_{val,mask},
+	 * and the pnv_default_stop_{val,mask}.
+	 *
 	 * pnv_first_deep_stop_state should be set to the first stop
 	 * level to cause hypervisor state loss.
-	 * pnv_deepest_stop_state should be set to the deepest stop
-	 * stop state.
+	 *
+	 * pnv_deepest_stop_{val,mask} should be set to values corresponding to
+	 * the deepest stop state.
+	 *
+	 * pnv_default_stop_{val,mask} should be set to values corresponding to
+	 * the shallowest (OPAL_PM_STOP_INST_FAST) loss-less stop state.
 	 */
 	pnv_first_deep_stop_state = MAX_STOP_STATE;
 	for (i = 0; i < dt_idle_states; i++) {
+		int err;
 		u64 psscr_rl = psscr_val[i] & PSSCR_RL_MASK;
 
 		if ((flags[i] & OPAL_PM_LOSE_FULL_CONTEXT) &&
 		     (pnv_first_deep_stop_state > psscr_rl))
 			pnv_first_deep_stop_state = psscr_rl;
 
-		if (pnv_deepest_stop_state < psscr_rl)
-			pnv_deepest_stop_state = psscr_rl;
+		err = validate_psscr_val_mask(&psscr_val[i], &psscr_mask[i],
+					      flags[i]);
+		if (err) {
+			report_invalid_psscr_val(psscr_val[i], err);
+			continue;
+		}
+
+		if (max_residency_ns < residency_ns[i]) {
+			max_residency_ns = residency_ns[i];
+			pnv_deepest_stop_psscr_val = psscr_val[i];
+			pnv_deepest_stop_psscr_mask = psscr_mask[i];
+			deepest_stop_found = true;
+		}
+
+		if (!default_stop_found &&
+		    (flags[i] & OPAL_PM_STOP_INST_FAST)) {
+			pnv_default_stop_val = psscr_val[i];
+			pnv_default_stop_mask = psscr_mask[i];
+			default_stop_found = true;
+		}
+	}
+
+	if (!default_stop_found) {
+		pnv_default_stop_val = PSSCR_HV_DEFAULT_VAL;
+		pnv_default_stop_mask = PSSCR_HV_DEFAULT_MASK;
+		pr_warn("Setting default stop psscr val=0x%016llx,mask=0x%016llx\n",
+			pnv_default_stop_val, pnv_default_stop_mask);
+	}
+
+	if (!deepest_stop_found) {
+		pnv_deepest_stop_psscr_val = PSSCR_HV_DEFAULT_VAL;
+		pnv_deepest_stop_psscr_mask = PSSCR_HV_DEFAULT_MASK;
+		pr_warn("Setting default stop psscr val=0x%016llx,mask=0x%016llx\n",
+			pnv_deepest_stop_psscr_val,
+			pnv_deepest_stop_psscr_mask);
 	}
 
 out:
 	kfree(psscr_val);
+	kfree(psscr_mask);
+	kfree(residency_ns);
 	return rc;
 }
 
@@ -373,7 +485,7 @@ static void __init pnv_probe_idle_states(void)
 	}
 
 	if (cpu_has_feature(CPU_FTR_ARCH_300)) {
-		if (pnv_arch300_idle_init(np, flags, dt_idle_states))
+		if (pnv_power9_idle_init(np, flags, dt_idle_states))
 			goto out;
 	}
 
diff --git a/arch/powerpc/platforms/powernv/opal-hmi.c b/arch/powerpc/platforms/powernv/opal-hmi.c
index c0a8201cb4d9..88f3c61eec95 100644
--- a/arch/powerpc/platforms/powernv/opal-hmi.c
+++ b/arch/powerpc/platforms/powernv/opal-hmi.c
@@ -180,7 +180,8 @@ static void print_hmi_event_info(struct OpalHMIEvent *hmi_evt)
 		"An XSCOM operation completed",
 		"SCOM has set a reserved FIR bit to cause recovery",
 		"Debug trigger has set a reserved FIR bit to cause recovery",
-		"A hypervisor resource error occurred"
+		"A hypervisor resource error occurred",
+		"CAPP recovery process is in progress",
 	};
 
 	/* Print things out */
diff --git a/arch/powerpc/platforms/powernv/opal-irqchip.c b/arch/powerpc/platforms/powernv/opal-irqchip.c
index 998316bf2dad..ecdcba9d1220 100644
--- a/arch/powerpc/platforms/powernv/opal-irqchip.c
+++ b/arch/powerpc/platforms/powernv/opal-irqchip.c
@@ -183,8 +183,9 @@ void opal_event_shutdown(void)
 int __init opal_event_init(void)
 {
 	struct device_node *dn, *opal_node;
-	const __be32 *irqs;
-	int i, irqlen, rc = 0;
+	const char **names;
+	u32 *irqs;
+	int i, rc;
 
 	opal_node = of_find_node_by_path("/ibm,opal");
 	if (!opal_node) {
@@ -209,31 +210,56 @@ int __init opal_event_init(void)
 		goto out;
 	}
 
-	/* Get interrupt property */
-	irqs = of_get_property(opal_node, "opal-interrupts", &irqlen);
-	opal_irq_count = irqs ? (irqlen / 4) : 0;
+	/* Get opal-interrupts property and names if present */
+	rc = of_property_count_u32_elems(opal_node, "opal-interrupts");
+	if (rc < 0)
+		goto out;
+
+	opal_irq_count = rc;
 	pr_debug("Found %d interrupts reserved for OPAL\n", opal_irq_count);
 
-	/* Install interrupt handlers */
+	irqs = kcalloc(opal_irq_count, sizeof(*irqs), GFP_KERNEL);
+	names = kcalloc(opal_irq_count, sizeof(*names), GFP_KERNEL);
 	opal_irqs = kcalloc(opal_irq_count, sizeof(*opal_irqs), GFP_KERNEL);
-	for (i = 0; irqs && i < opal_irq_count; i++, irqs++) {
-		unsigned int irq, virq;
+
+	if (WARN_ON(!irqs || !names || !opal_irqs))
+		goto out_free;
+
+	rc = of_property_read_u32_array(opal_node, "opal-interrupts",
+					irqs, opal_irq_count);
+	if (rc < 0) {
+		pr_err("Error %d reading opal-interrupts array\n", rc);
+		goto out_free;
+	}
+
+	/* It's not an error for the names to be missing */
+	of_property_read_string_array(opal_node, "opal-interrupts-names",
+				      names, opal_irq_count);
+
+	/* Install interrupt handlers */
+	for (i = 0; i < opal_irq_count; i++) {
+		unsigned int virq;
+		char *name;
 
 		/* Get hardware and virtual IRQ */
-		irq = be32_to_cpup(irqs);
-		virq = irq_create_mapping(NULL, irq);
+		virq = irq_create_mapping(NULL, irqs[i]);
 		if (!virq) {
-			pr_warn("Failed to map irq 0x%x\n", irq);
+			pr_warn("Failed to map irq 0x%x\n", irqs[i]);
 			continue;
 		}
 
+		if (names[i] && strlen(names[i]))
+			name = kasprintf(GFP_KERNEL, "opal-%s", names[i]);
+		else
+			name = kasprintf(GFP_KERNEL, "opal");
+
 		/* Install interrupt handler */
 		rc = request_irq(virq, opal_interrupt, IRQF_TRIGGER_LOW,
-				 "opal", NULL);
+				 name, NULL);
 		if (rc) {
 			irq_dispose_mapping(virq);
 			pr_warn("Error %d requesting irq %d (0x%x)\n",
-				 rc, virq, irq);
+				 rc, virq, irqs[i]);
 			continue;
 		}
 
@@ -241,6 +267,9 @@ int __init opal_event_init(void)
 		opal_irqs[i] = virq;
 	}
 
+out_free:
+	kfree(irqs);
+	kfree(names);
 out:
 	of_node_put(opal_node);
 	return rc;
diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c
index 4886eb8b6381..a91d7876fae2 100644
--- a/arch/powerpc/platforms/powernv/opal-lpc.c
+++ b/arch/powerpc/platforms/powernv/opal-lpc.c
@@ -18,11 +18,11 @@
 
 #include <asm/machdep.h>
 #include <asm/firmware.h>
-#include <asm/xics.h>
 #include <asm/opal.h>
 #include <asm/prom.h>
 #include <linux/uaccess.h>
 #include <asm/debug.h>
+#include <asm/isa-bridge.h>
 
 static int opal_lpc_chip_id = -1;
 
@@ -386,7 +386,7 @@ static int opal_lpc_init_debugfs(void)
 machine_device_initcall(powernv, opal_lpc_init_debugfs);
 #endif  /* CONFIG_DEBUG_FS */
 
-void opal_lpc_init(void)
+void __init opal_lpc_init(void)
 {
 	struct device_node *np;
 
@@ -406,9 +406,17 @@ void opal_lpc_init(void)
 	if (opal_lpc_chip_id < 0)
 		return;
 
-	/* Setup special IO ops */
-	ppc_pci_io = opal_lpc_io;
-	isa_io_special = true;
-
-	pr_info("OPAL: Power8 LPC bus found, chip ID %d\n", opal_lpc_chip_id);
+	/* Does it support direct mapping ? */
+	if (of_get_property(np, "ranges", NULL)) {
+		pr_info("OPAL: Found memory mapped LPC bus on chip %d\n",
+			opal_lpc_chip_id);
+		isa_bridge_init_non_pci(np);
+	} else {
+		pr_info("OPAL: Found non-mapped LPC bus on chip %d\n",
+			opal_lpc_chip_id);
+
+		/* Setup special IO ops */
+		ppc_pci_io = opal_lpc_io;
+		isa_io_special = true;
+	}
 }
diff --git a/arch/powerpc/platforms/powernv/opal-msglog.c b/arch/powerpc/platforms/powernv/opal-msglog.c
index 39d6ff9e5630..7a9cde0cfbd1 100644
--- a/arch/powerpc/platforms/powernv/opal-msglog.c
+++ b/arch/powerpc/platforms/powernv/opal-msglog.c
@@ -123,6 +123,10 @@ void __init opal_msglog_init(void)
 		return;
 	}
 
+	/* Report maximum size */
+	opal_msglog_attr.size =  be32_to_cpu(mc->ibuf_size) +
+		be32_to_cpu(mc->obuf_size);
+
 	opal_memcons = mc;
 }
 
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index 3aa40f1b20f5..6693f75e93d1 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -58,14 +58,16 @@ END_FTR_SECTION(0, 1);						\
 
 #define OPAL_CALL(name, token)		\
  _GLOBAL_TOC(name);			\
+	mfmsr	r12;			\
 	mflr	r0;			\
+	andi.	r11,r12,MSR_IR|MSR_DR; 	\
 	std	r0,PPC_LR_STKOFF(r1);	\
 	li	r0,token;		\
+	beq	opal_real_call;         \
 	OPAL_BRANCH(opal_tracepoint_entry) \
-	mfcr	r12;			\
-	stw	r12,8(r1);		\
+	mfcr	r11;			\
+	stw	r11,8(r1);		\
 	li	r11,0;			\
-	mfmsr	r12;			\
 	ori	r11,r11,MSR_EE;		\
 	std	r12,PACASAVEDMSR(r13);	\
 	andc	r12,r12,r11;		\
@@ -98,6 +100,30 @@ opal_return:
 	mtcr	r4;
 	rfid
 
+opal_real_call:
+	mfcr	r11
+	stw	r11,8(r1)
+	/* Set opal return address */
+	LOAD_REG_ADDR(r11, opal_return_realmode)
+	mtlr	r11
+	li	r11,MSR_LE
+	andc	r12,r12,r11
+	mtspr	SPRN_HSRR1,r12
+	LOAD_REG_ADDR(r11,opal)
+	ld	r12,8(r11)
+	ld	r2,0(r11)
+	mtspr	SPRN_HSRR0,r12
+	hrfid
+
+opal_return_realmode:
+	FIXUP_ENDIAN
+	ld	r2,PACATOC(r13);
+	lwz	r11,8(r1);
+	ld	r12,PPC_LR_STKOFF(r1)
+	mtcr	r11;
+	mtlr	r12
+	blr
+
 #ifdef CONFIG_TRACEPOINTS
 opal_tracepoint_entry:
 	stdu	r1,-STACKFRAMESIZE(r1)
@@ -146,7 +172,7 @@ opal_tracepoint_entry:
 opal_tracepoint_return:
 	std	r3,STK_REG(R31)(r1)
 	mr	r4,r3
-	ld	r0,STK_REG(R23)(r1)
+	ld	r3,STK_REG(R23)(r1)
 	bl	__trace_opal_exit
 	ld	r3,STK_REG(R31)(r1)
 	addi	r1,r1,STACKFRAMESIZE
@@ -155,36 +181,6 @@ opal_tracepoint_return:
 	blr
 #endif
 
-#define OPAL_CALL_REAL(name, token)			\
- _GLOBAL_TOC(name);					\
-	mflr	r0;					\
-	std	r0,PPC_LR_STKOFF(r1);			\
-	li	r0,token;				\
-	mfcr	r12;					\
-	stw	r12,8(r1);				\
-							\
-	/* Set opal return address */			\
-	LOAD_REG_ADDR(r11, opal_return_realmode);	\
-	mtlr	r11;					\
-	mfmsr	r12;					\
-	li	r11,MSR_LE;				\
-	andc	r12,r12,r11;				\
-	mtspr	SPRN_HSRR1,r12;				\
-	LOAD_REG_ADDR(r11,opal);			\
-	ld	r12,8(r11);				\
-	ld	r2,0(r11);				\
-	mtspr	SPRN_HSRR0,r12;				\
-	hrfid
-
-opal_return_realmode:
-	FIXUP_ENDIAN
-	ld	r2,PACATOC(r13);
-	lwz	r11,8(r1);
-	ld	r12,PPC_LR_STKOFF(r1)
-	mtcr	r11;
-	mtlr	r12
-	blr
-
 
 OPAL_CALL(opal_invalid_call,			OPAL_INVALID_CALL);
 OPAL_CALL(opal_console_write,			OPAL_CONSOLE_WRITE);
@@ -208,7 +204,6 @@ OPAL_CALL(opal_pci_config_write_byte,		OPAL_PCI_CONFIG_WRITE_BYTE);
 OPAL_CALL(opal_pci_config_write_half_word,	OPAL_PCI_CONFIG_WRITE_HALF_WORD);
 OPAL_CALL(opal_pci_config_write_word,		OPAL_PCI_CONFIG_WRITE_WORD);
 OPAL_CALL(opal_set_xive,			OPAL_SET_XIVE);
-OPAL_CALL_REAL(opal_rm_set_xive,		OPAL_SET_XIVE);
 OPAL_CALL(opal_get_xive,			OPAL_GET_XIVE);
 OPAL_CALL(opal_register_exception_handler,	OPAL_REGISTER_OPAL_EXCEPTION_HANDLER);
 OPAL_CALL(opal_pci_eeh_freeze_status,		OPAL_PCI_EEH_FREEZE_STATUS);
@@ -264,7 +259,6 @@ OPAL_CALL(opal_validate_flash,			OPAL_FLASH_VALIDATE);
 OPAL_CALL(opal_manage_flash,			OPAL_FLASH_MANAGE);
 OPAL_CALL(opal_update_flash,			OPAL_FLASH_UPDATE);
 OPAL_CALL(opal_resync_timebase,			OPAL_RESYNC_TIMEBASE);
-OPAL_CALL_REAL(opal_rm_resync_timebase,		OPAL_RESYNC_TIMEBASE);
 OPAL_CALL(opal_check_token,			OPAL_CHECK_TOKEN);
 OPAL_CALL(opal_dump_init,			OPAL_DUMP_INIT);
 OPAL_CALL(opal_dump_info,			OPAL_DUMP_INFO);
@@ -280,9 +274,7 @@ OPAL_CALL(opal_sensor_read,			OPAL_SENSOR_READ);
 OPAL_CALL(opal_get_param,			OPAL_GET_PARAM);
 OPAL_CALL(opal_set_param,			OPAL_SET_PARAM);
 OPAL_CALL(opal_handle_hmi,			OPAL_HANDLE_HMI);
-OPAL_CALL_REAL(opal_rm_handle_hmi,		OPAL_HANDLE_HMI);
 OPAL_CALL(opal_config_cpu_idle_state,		OPAL_CONFIG_CPU_IDLE_STATE);
-OPAL_CALL_REAL(opal_rm_config_cpu_idle_state,	OPAL_CONFIG_CPU_IDLE_STATE);
 OPAL_CALL(opal_slw_set_reg,			OPAL_SLW_SET_REG);
 OPAL_CALL(opal_register_dump_region,		OPAL_REGISTER_DUMP_REGION);
 OPAL_CALL(opal_unregister_dump_region,		OPAL_UNREGISTER_DUMP_REGION);
@@ -304,11 +296,8 @@ OPAL_CALL(opal_pci_get_presence_state,		OPAL_PCI_GET_PRESENCE_STATE);
 OPAL_CALL(opal_pci_get_power_state,		OPAL_PCI_GET_POWER_STATE);
 OPAL_CALL(opal_pci_set_power_state,		OPAL_PCI_SET_POWER_STATE);
 OPAL_CALL(opal_int_get_xirr,			OPAL_INT_GET_XIRR);
-OPAL_CALL_REAL(opal_rm_int_get_xirr,		OPAL_INT_GET_XIRR);
 OPAL_CALL(opal_int_set_cppr,			OPAL_INT_SET_CPPR);
 OPAL_CALL(opal_int_eoi,				OPAL_INT_EOI);
-OPAL_CALL_REAL(opal_rm_int_eoi,			OPAL_INT_EOI);
 OPAL_CALL(opal_int_set_mfrr,			OPAL_INT_SET_MFRR);
-OPAL_CALL_REAL(opal_rm_int_set_mfrr,		OPAL_INT_SET_MFRR);
 OPAL_CALL(opal_pci_tce_kill,			OPAL_PCI_TCE_KILL);
-OPAL_CALL_REAL(opal_rm_pci_tce_kill,		OPAL_PCI_TCE_KILL);
+OPAL_CALL(opal_nmmu_set_ptcr,			OPAL_NMMU_SET_PTCR);
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index 282293572dc8..86d9fde93c17 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -875,6 +875,17 @@ int opal_error_code(int rc)
 	}
 }
 
+void powernv_set_nmmu_ptcr(unsigned long ptcr)
+{
+	int rc;
+
+	if (firmware_has_feature(FW_FEATURE_OPAL)) {
+		rc = opal_nmmu_set_ptcr(-1UL, ptcr);
+		if (rc != OPAL_SUCCESS && rc != OPAL_UNSUPPORTED)
+			pr_warn("%s: Unable to set nest mmu ptcr\n", __func__);
+	}
+}
+
 EXPORT_SYMBOL_GPL(opal_poll_events);
 EXPORT_SYMBOL_GPL(opal_rtc_read);
 EXPORT_SYMBOL_GPL(opal_rtc_write);
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index b07680cd2518..8278f43ad4b8 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1326,7 +1326,9 @@ static int pnv_pci_vf_assign_m64(struct pci_dev *pdev, u16 num_vfs)
 	else
 		m64_bars = 1;
 
-	pdn->m64_map = kmalloc(sizeof(*pdn->m64_map) * m64_bars, GFP_KERNEL);
+	pdn->m64_map = kmalloc_array(m64_bars,
+				     sizeof(*pdn->m64_map),
+				     GFP_KERNEL);
 	if (!pdn->m64_map)
 		return -ENOMEM;
 	/* Initialize the m64_map to IODA_INVALID_M64 */
@@ -1593,8 +1595,9 @@ int pnv_pci_sriov_enable(struct pci_dev *pdev, u16 num_vfs)
 
 		/* Allocating pe_num_map */
 		if (pdn->m64_single_mode)
-			pdn->pe_num_map = kmalloc(sizeof(*pdn->pe_num_map) * num_vfs,
-					GFP_KERNEL);
+			pdn->pe_num_map = kmalloc_array(num_vfs,
+							sizeof(*pdn->pe_num_map),
+							GFP_KERNEL);
 		else
 			pdn->pe_num_map = kmalloc(sizeof(*pdn->pe_num_map), GFP_KERNEL);
 
@@ -1950,7 +1953,12 @@ static void pnv_pci_ioda2_tce_invalidate(struct iommu_table *tbl,
 		struct pnv_phb *phb = pe->phb;
 		unsigned int shift = tbl->it_page_shift;
 
-		if (phb->type == PNV_PHB_NPU) {
+		/*
+		 * NVLink1 can use the TCE kill register directly as
+		 * it's the same as PHB3. NVLink2 is different and
+		 * should go via the OPAL call.
+		 */
+		if (phb->model == PNV_PHB_MODEL_NPU) {
 			/*
 			 * The NVLink hardware does not support TCE kill
 			 * per TCE entry so we have to invalidate
@@ -1962,11 +1970,6 @@ static void pnv_pci_ioda2_tce_invalidate(struct iommu_table *tbl,
 		if (phb->model == PNV_PHB_MODEL_PHB3 && phb->regs)
 			pnv_pci_phb3_tce_invalidate(pe, rm, shift,
 						    index, npages);
-		else if (rm)
-			opal_rm_pci_tce_kill(phb->opal_id,
-					     OPAL_PCI_TCE_KILL_PAGES,
-					     pe->pe_number, 1u << shift,
-					     index << shift, npages);
 		else
 			opal_pci_tce_kill(phb->opal_id,
 					  OPAL_PCI_TCE_KILL_PAGES,
@@ -3671,6 +3674,8 @@ static void __init pnv_pci_init_ioda_phb(struct device_node *np,
 		phb->model = PNV_PHB_MODEL_PHB3;
 	else if (of_device_is_compatible(np, "ibm,power8-npu-pciex"))
 		phb->model = PNV_PHB_MODEL_NPU;
+	else if (of_device_is_compatible(np, "ibm,power9-npu-pciex"))
+		phb->model = PNV_PHB_MODEL_NPU2;
 	else
 		phb->model = PNV_PHB_MODEL_UNKNOWN;
 
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index c6d554fe585c..eb835e977e33 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -940,6 +940,13 @@ void __init pnv_pci_init(void)
 	for_each_compatible_node(np, NULL, "ibm,ioda2-npu-phb")
 		pnv_pci_init_npu_phb(np);
 
+	/*
+	 * Look for NPU2 PHBs which we treat mostly as NPU PHBs with
+	 * the exception of TCE kill which requires an OPAL call.
+	 */
+	for_each_compatible_node(np, NULL, "ibm,ioda2-npu2-phb")
+		pnv_pci_init_npu_phb(np);
+
 	/* Configure IOMMU DMA hooks */
 	set_pci_dma_ops(&dma_iommu_ops);
 }
diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h
index e64df7894d6e..e1d3e5526b54 100644
--- a/arch/powerpc/platforms/powernv/pci.h
+++ b/arch/powerpc/platforms/powernv/pci.h
@@ -19,6 +19,7 @@ enum pnv_phb_model {
 	PNV_PHB_MODEL_P7IOC,
 	PNV_PHB_MODEL_PHB3,
 	PNV_PHB_MODEL_NPU,
+	PNV_PHB_MODEL_NPU2,
 };
 
 #define PNV_PCI_DIAG_BUF_SIZE	8192
diff --git a/arch/powerpc/platforms/powernv/powernv.h b/arch/powerpc/platforms/powernv/powernv.h
index da7c843ac7f1..613052232475 100644
--- a/arch/powerpc/platforms/powernv/powernv.h
+++ b/arch/powerpc/platforms/powernv/powernv.h
@@ -18,7 +18,8 @@ static inline void pnv_pci_shutdown(void) { }
 #endif
 
 extern u32 pnv_get_supported_cpuidle_states(void);
-extern u64 pnv_deepest_stop_state;
+extern u64 pnv_deepest_stop_psscr_val;
+extern u64 pnv_deepest_stop_psscr_mask;
 
 extern void pnv_lpc_init(void);
 
diff --git a/arch/powerpc/platforms/powernv/smp.c b/arch/powerpc/platforms/powernv/smp.c
index eec0e8d0454d..e39e6c428af1 100644
--- a/arch/powerpc/platforms/powernv/smp.c
+++ b/arch/powerpc/platforms/powernv/smp.c
@@ -184,15 +184,17 @@ static void pnv_smp_cpu_kill_self(void)
 
 		ppc64_runlatch_off();
 
-		if (cpu_has_feature(CPU_FTR_ARCH_300))
-			srr1 = power9_idle_stop(pnv_deepest_stop_state);
-		else if (idle_states & OPAL_PM_WINKLE_ENABLED)
+		if (cpu_has_feature(CPU_FTR_ARCH_300)) {
+			srr1 = power9_idle_stop(pnv_deepest_stop_psscr_val,
+						pnv_deepest_stop_psscr_mask);
+		} else if (idle_states & OPAL_PM_WINKLE_ENABLED) {
 			srr1 = power7_winkle();
-		else if ((idle_states & OPAL_PM_SLEEP_ENABLED) ||
-				(idle_states & OPAL_PM_SLEEP_ENABLED_ER1))
+		} else if ((idle_states & OPAL_PM_SLEEP_ENABLED) ||
+			   (idle_states & OPAL_PM_SLEEP_ENABLED_ER1)) {
 			srr1 = power7_sleep();
-		else
+		} else {
 			srr1 = power7_nap(1);
+		}
 
 		ppc64_runlatch_on();
 
diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platforms/pseries/Kconfig
index e1c280a95d58..30ec04f1c67c 100644
--- a/arch/powerpc/platforms/pseries/Kconfig
+++ b/arch/powerpc/platforms/pseries/Kconfig
@@ -17,7 +17,6 @@ config PPC_PSERIES
 	select PPC_UDBG_16550
 	select PPC_NATIVE
 	select PPC_DOORBELL
-	select HAVE_CONTEXT_TRACKING
 	select HOTPLUG_CPU if SMP
 	select ARCH_RANDOM
 	select PPC_DOORBELL
diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c
index 4839db385bb0..4ac419c7eb4c 100644
--- a/arch/powerpc/platforms/pseries/cmm.c
+++ b/arch/powerpc/platforms/pseries/cmm.c
@@ -76,7 +76,7 @@ module_param_named(delay, delay, uint, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(delay, "Delay (in seconds) between polls to query hypervisor paging requests. "
 		 "[Default=" __stringify(CMM_DEFAULT_DELAY) "]");
 module_param_named(hotplug_delay, hotplug_delay, uint, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(delay, "Delay (in seconds) after memory hotplug remove "
+MODULE_PARM_DESC(hotplug_delay, "Delay (in seconds) after memory hotplug remove "
 		 "before loaning resumes. "
 		 "[Default=" __stringify(CMM_HOTPLUG_DELAY) "]");
 module_param_named(oom_kb, oom_kb, uint, S_IRUGO | S_IWUSR);
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index 5cb2e4beffc5..d3a81e746fc4 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -551,7 +551,13 @@ dlpar_store_out:
 	return rc ? rc : count;
 }
 
-static CLASS_ATTR(dlpar, S_IWUSR, NULL, dlpar_store);
+static ssize_t dlpar_show(struct class *class, struct class_attribute *attr,
+			  char *buf)
+{
+	return sprintf(buf, "%s\n", "memory,cpu");
+}
+
+static CLASS_ATTR(dlpar, S_IWUSR | S_IRUSR, dlpar_show, dlpar_store);
 
 static int __init pseries_dlpar_init(void)
 {
diff --git a/arch/powerpc/platforms/pseries/firmware.c b/arch/powerpc/platforms/pseries/firmware.c
index ea7f09bd73b1..63cc82ad58ac 100644
--- a/arch/powerpc/platforms/pseries/firmware.c
+++ b/arch/powerpc/platforms/pseries/firmware.c
@@ -64,6 +64,7 @@ hypertas_fw_features_table[] = {
 	{FW_FEATURE_VPHN,		"hcall-vphn"},
 	{FW_FEATURE_SET_MODE,		"hcall-set-mode"},
 	{FW_FEATURE_BEST_ENERGY,	"hcall-best-energy-1*"},
+	{FW_FEATURE_HPT_RESIZE,		"hcall-hpt-resize"},
 };
 
 /* Build up the firmware features bitmask using the contents of
@@ -126,7 +127,7 @@ static void __init fw_vec5_feature_init(const char *vec5, unsigned long len)
 		index = OV5_INDX(vec5_fw_features_table[i].feature);
 		feat = OV5_FEAT(vec5_fw_features_table[i].feature);
 
-		if (vec5[index] & feat)
+		if (index < len && (vec5[index] & feat))
 			powerpc_firmware_features |=
 				vec5_fw_features_table[i].val;
 	}
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 2617f9f356bd..3381c20edbc0 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -446,9 +446,7 @@ static int dlpar_remove_lmb(struct of_drconf_cell *lmb)
 	/* Update memory regions for memory remove */
 	memblock_remove(lmb->base_addr, block_sz);
 
-	dlpar_release_drc(lmb->drc_index);
 	dlpar_remove_device_tree_lmb(lmb);
-
 	return 0;
 }
 
@@ -516,6 +514,7 @@ static int dlpar_memory_remove_by_count(u32 lmbs_to_remove,
 			if (!lmbs[i].reserved)
 				continue;
 
+			dlpar_release_drc(lmbs[i].drc_index);
 			pr_info("Memory at %llx was hot-removed\n",
 				lmbs[i].base_addr);
 
@@ -545,6 +544,9 @@ static int dlpar_memory_remove_by_index(u32 drc_index, struct property *prop)
 		if (lmbs[i].drc_index == drc_index) {
 			lmb_found = 1;
 			rc = dlpar_remove_lmb(&lmbs[i]);
+			if (!rc)
+				dlpar_release_drc(lmbs[i].drc_index);
+
 			break;
 		}
 	}
@@ -561,6 +563,44 @@ static int dlpar_memory_remove_by_index(u32 drc_index, struct property *prop)
 	return rc;
 }
 
+static int dlpar_memory_readd_by_index(u32 drc_index, struct property *prop)
+{
+	struct of_drconf_cell *lmbs;
+	u32 num_lmbs, *p;
+	int lmb_found;
+	int i, rc;
+
+	pr_info("Attempting to update LMB, drc index %x\n", drc_index);
+
+	p = prop->value;
+	num_lmbs = *p++;
+	lmbs = (struct of_drconf_cell *)p;
+
+	lmb_found = 0;
+	for (i = 0; i < num_lmbs; i++) {
+		if (lmbs[i].drc_index == drc_index) {
+			lmb_found = 1;
+			rc = dlpar_remove_lmb(&lmbs[i]);
+			if (!rc) {
+				rc = dlpar_add_lmb(&lmbs[i]);
+				if (rc)
+					dlpar_release_drc(lmbs[i].drc_index);
+			}
+			break;
+		}
+	}
+
+	if (!lmb_found)
+		rc = -EINVAL;
+
+	if (rc)
+		pr_info("Failed to update memory at %llx\n",
+			lmbs[i].base_addr);
+	else
+		pr_info("Memory at %llx was updated\n", lmbs[i].base_addr);
+
+	return rc;
+}
 #else
 static inline int pseries_remove_memblock(unsigned long base,
 					  unsigned int memblock_size)
@@ -599,10 +639,6 @@ static int dlpar_add_lmb(struct of_drconf_cell *lmb)
 	if (lmb->flags & DRCONF_MEM_ASSIGNED)
 		return -EINVAL;
 
-	rc = dlpar_acquire_drc(lmb->drc_index);
-	if (rc)
-		return rc;
-
 	rc = dlpar_add_device_tree_lmb(lmb);
 	if (rc) {
 		pr_err("Couldn't update device tree for drc index %x\n",
@@ -618,12 +654,10 @@ static int dlpar_add_lmb(struct of_drconf_cell *lmb)
 
 	/* Add the memory */
 	rc = add_memory(nid, lmb->base_addr, block_sz);
-	if (rc) {
+	if (rc)
 		dlpar_remove_device_tree_lmb(lmb);
-		dlpar_release_drc(lmb->drc_index);
-	} else {
+	else
 		lmb->flags |= DRCONF_MEM_ASSIGNED;
-	}
 
 	return rc;
 }
@@ -655,10 +689,16 @@ static int dlpar_memory_add_by_count(u32 lmbs_to_add, struct property *prop)
 		return -EINVAL;
 
 	for (i = 0; i < num_lmbs && lmbs_to_add != lmbs_added; i++) {
-		rc = dlpar_add_lmb(&lmbs[i]);
+		rc = dlpar_acquire_drc(lmbs[i].drc_index);
 		if (rc)
 			continue;
 
+		rc = dlpar_add_lmb(&lmbs[i]);
+		if (rc) {
+			dlpar_release_drc(lmbs[i].drc_index);
+			continue;
+		}
+
 		lmbs_added++;
 
 		/* Mark this lmb so we can remove it later if all of the
@@ -678,6 +718,8 @@ static int dlpar_memory_add_by_count(u32 lmbs_to_add, struct property *prop)
 			if (rc)
 				pr_err("Failed to remove LMB, drc index %x\n",
 				       be32_to_cpu(lmbs[i].drc_index));
+			else
+				dlpar_release_drc(lmbs[i].drc_index);
 		}
 		rc = -EINVAL;
 	} else {
@@ -711,7 +753,13 @@ static int dlpar_memory_add_by_index(u32 drc_index, struct property *prop)
 	for (i = 0; i < num_lmbs; i++) {
 		if (lmbs[i].drc_index == drc_index) {
 			lmb_found = 1;
-			rc = dlpar_add_lmb(&lmbs[i]);
+			rc = dlpar_acquire_drc(lmbs[i].drc_index);
+			if (!rc) {
+				rc = dlpar_add_lmb(&lmbs[i]);
+				if (rc)
+					dlpar_release_drc(lmbs[i].drc_index);
+			}
+
 			break;
 		}
 	}
@@ -769,6 +817,9 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
 		else
 			rc = -EINVAL;
 		break;
+	case PSERIES_HP_ELOG_ACTION_READD:
+		rc = dlpar_memory_readd_by_index(drc_index, prop);
+		break;
 	default:
 		pr_err("Invalid action (%d) specified\n", hp_elog->action);
 		rc = -EINVAL;
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 5dc1c3c6e716..251060cf1713 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -27,6 +27,8 @@
 #include <linux/console.h>
 #include <linux/export.h>
 #include <linux/jump_label.h>
+#include <linux/delay.h>
+#include <linux/stop_machine.h>
 #include <asm/processor.h>
 #include <asm/mmu.h>
 #include <asm/page.h>
@@ -609,6 +611,135 @@ static int __init disable_bulk_remove(char *str)
 
 __setup("bulk_remove=", disable_bulk_remove);
 
+#define HPT_RESIZE_TIMEOUT	10000 /* ms */
+
+struct hpt_resize_state {
+	unsigned long shift;
+	int commit_rc;
+};
+
+static int pseries_lpar_resize_hpt_commit(void *data)
+{
+	struct hpt_resize_state *state = data;
+
+	state->commit_rc = plpar_resize_hpt_commit(0, state->shift);
+	if (state->commit_rc != H_SUCCESS)
+		return -EIO;
+
+	/* Hypervisor has transitioned the HTAB, update our globals */
+	ppc64_pft_size = state->shift;
+	htab_size_bytes = 1UL << ppc64_pft_size;
+	htab_hash_mask = (htab_size_bytes >> 7) - 1;
+
+	return 0;
+}
+
+/* Must be called in user context */
+static int pseries_lpar_resize_hpt(unsigned long shift)
+{
+	struct hpt_resize_state state = {
+		.shift = shift,
+		.commit_rc = H_FUNCTION,
+	};
+	unsigned int delay, total_delay = 0;
+	int rc;
+	ktime_t t0, t1, t2;
+
+	might_sleep();
+
+	if (!firmware_has_feature(FW_FEATURE_HPT_RESIZE))
+		return -ENODEV;
+
+	printk(KERN_INFO "lpar: Attempting to resize HPT to shift %lu\n",
+	       shift);
+
+	t0 = ktime_get();
+
+	rc = plpar_resize_hpt_prepare(0, shift);
+	while (H_IS_LONG_BUSY(rc)) {
+		delay = get_longbusy_msecs(rc);
+		total_delay += delay;
+		if (total_delay > HPT_RESIZE_TIMEOUT) {
+			/* prepare with shift==0 cancels an in-progress resize */
+			rc = plpar_resize_hpt_prepare(0, 0);
+			if (rc != H_SUCCESS)
+				printk(KERN_WARNING
+				       "lpar: Unexpected error %d cancelling timed out HPT resize\n",
+				       rc);
+			return -ETIMEDOUT;
+		}
+		msleep(delay);
+		rc = plpar_resize_hpt_prepare(0, shift);
+	};
+
+	switch (rc) {
+	case H_SUCCESS:
+		/* Continue on */
+		break;
+
+	case H_PARAMETER:
+		return -EINVAL;
+	case H_RESOURCE:
+		return -EPERM;
+	default:
+		printk(KERN_WARNING
+		       "lpar: Unexpected error %d from H_RESIZE_HPT_PREPARE\n",
+		       rc);
+		return -EIO;
+	}
+
+	t1 = ktime_get();
+
+	rc = stop_machine(pseries_lpar_resize_hpt_commit, &state, NULL);
+
+	t2 = ktime_get();
+
+	if (rc != 0) {
+		switch (state.commit_rc) {
+		case H_PTEG_FULL:
+			printk(KERN_WARNING
+			       "lpar: Hash collision while resizing HPT\n");
+			return -ENOSPC;
+
+		default:
+			printk(KERN_WARNING
+			       "lpar: Unexpected error %d from H_RESIZE_HPT_COMMIT\n",
+			       state.commit_rc);
+			return -EIO;
+		};
+	}
+
+	printk(KERN_INFO
+	       "lpar: HPT resize to shift %lu complete (%lld ms / %lld ms)\n",
+	       shift, (long long) ktime_ms_delta(t1, t0),
+	       (long long) ktime_ms_delta(t2, t1));
+
+	return 0;
+}
+
+/* Actually only used for radix, so far */
+static int pseries_lpar_register_process_table(unsigned long base,
+			unsigned long page_size, unsigned long table_size)
+{
+	long rc;
+	unsigned long flags = PROC_TABLE_NEW;
+
+	if (radix_enabled())
+		flags |= PROC_TABLE_RADIX | PROC_TABLE_GTSE;
+	for (;;) {
+		rc = plpar_hcall_norets(H_REGISTER_PROC_TBL, flags, base,
+					page_size, table_size);
+		if (!H_IS_LONG_BUSY(rc))
+			break;
+		mdelay(get_longbusy_msecs(rc));
+	}
+	if (rc != H_SUCCESS) {
+		pr_err("Failed to register process table (rc=%ld)\n", rc);
+		BUG();
+	}
+	return rc;
+}
+
 void __init hpte_init_pseries(void)
 {
 	mmu_hash_ops.hpte_invalidate	 = pSeries_lpar_hpte_invalidate;
@@ -620,6 +751,13 @@ void __init hpte_init_pseries(void)
 	mmu_hash_ops.flush_hash_range	 = pSeries_lpar_flush_hash_range;
 	mmu_hash_ops.hpte_clear_all      = pseries_hpte_clear_all;
 	mmu_hash_ops.hugepage_invalidate = pSeries_lpar_hugepage_invalidate;
+	mmu_hash_ops.resize_hpt		 = pseries_lpar_resize_hpt;
+}
+
+void radix_init_pseries(void)
+{
+	pr_info("Using radix MMU under hypervisor\n");
+	register_process_table = pseries_lpar_register_process_table;
 }
 
 #ifdef CONFIG_PPC_SMLPAR
diff --git a/arch/powerpc/platforms/pseries/mobility.c b/arch/powerpc/platforms/pseries/mobility.c
index a560a98bcf3b..5a0c7ba429ce 100644
--- a/arch/powerpc/platforms/pseries/mobility.c
+++ b/arch/powerpc/platforms/pseries/mobility.c
@@ -39,6 +39,7 @@ struct update_props_workarea {
 #define ADD_DT_NODE	0x03000000
 
 #define MIGRATION_SCOPE	(1)
+#define PRRN_SCOPE -2
 
 static int mobility_rtas_call(int token, char *buf, s32 scope)
 {
@@ -236,6 +237,35 @@ static int add_dt_node(__be32 parent_phandle, __be32 drc_index)
 	return rc;
 }
 
+static void prrn_update_node(__be32 phandle)
+{
+	struct pseries_hp_errorlog *hp_elog;
+	struct device_node *dn;
+
+	/*
+	 * If a node is found from a the given phandle, the phandle does not
+	 * represent the drc index of an LMB and we can ignore.
+	 */
+	dn = of_find_node_by_phandle(be32_to_cpu(phandle));
+	if (dn) {
+		of_node_put(dn);
+		return;
+	}
+
+	hp_elog = kzalloc(sizeof(*hp_elog), GFP_KERNEL);
+	if(!hp_elog)
+		return;
+
+	hp_elog->resource = PSERIES_HP_ELOG_RESOURCE_MEM;
+	hp_elog->action = PSERIES_HP_ELOG_ACTION_READD;
+	hp_elog->id_type = PSERIES_HP_ELOG_ID_DRC_INDEX;
+	hp_elog->_drc_u.drc_index = phandle;
+
+	queue_hotplug_event(hp_elog, NULL, NULL);
+
+	kfree(hp_elog);
+}
+
 int pseries_devicetree_update(s32 scope)
 {
 	char *rtas_buf;
@@ -274,6 +304,10 @@ int pseries_devicetree_update(s32 scope)
 					break;
 				case UPDATE_DT_NODE:
 					update_dt_node(phandle, scope);
+
+					if (scope == PRRN_SCOPE)
+						prrn_update_node(phandle);
+
 					break;
 				case ADD_DT_NODE:
 					drc_index = *data++;
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 7736352f7279..b4d362ed03a1 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -66,6 +66,7 @@
 #include <asm/reg.h>
 #include <asm/plpar_wrappers.h>
 #include <asm/kexec.h>
+#include <asm/isa-bridge.h>
 
 #include "pseries.h"