Merge tag 'powerpc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc updates from Michael Ellerman:
 "Highlights include:

   - an update of the disassembly code used by xmon to the latest
     versions in binutils. We've received permission from all the
     authors of the relevant binutils changes to relicense their changes
     to the relevant files from GPLv3 to GPLv2, for inclusion in Linux.
     Thanks to Peter Bergner for doing the leg work to get permission
     from everyone.

   - addition of the "architected" Power9 CPU table entry, allowing us
     to boot in Power9 architected mode under a hypervisor.

   - updates to the Power9 PMU code.

   - implementation of clear_bit_unlock_is_negative_byte() to optimise
     unlock_page().

   - Freescale updates from Scott: "Highlights include 8xx breakpoints
     and perf, t1042rdb display support, and board updates."

  Thanks to:
    Al Viro, Andrew Donnellan, Aneesh Kumar K.V, Balbir Singh, Douglas
    Miller, Frédéric Weisbecker, Gavin Shan, Madhavan Srinivasan,
    Michael Roth, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Peter
    Bergner, Paul E. McKenney, Rashmica Gupta, Russell Currey, Sahil
    Mehta, Stewart Smith"

* tag 'powerpc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (48 commits)
  powerpc: Remove leftover cputime_to_nsecs call causing build error
  powerpc/mm/hash: Always clear UPRT and Host Radix bits when setting up CPU
  powerpc/optprobes: Fix TOC handling in optprobes trampoline
  powerpc/pseries: Advertise Hot Plug Event support to firmware
  cxl: fix nested locking hang during EEH hotplug
  powerpc/xmon: Dump memory in CPU endian format
  powerpc/pseries: Revert 'Auto-online hotplugged memory'
  powerpc/powernv: Make PCI non-optional
  powerpc/64: Implement clear_bit_unlock_is_negative_byte()
  powerpc/powernv: Remove unused variable in pnv_pci_sriov_disable()
  powerpc/kernel: Remove error message in pcibios_setup_phb_resources()
  powerpc/mm: Fix typo in set_pte_at()
  pci/hotplug/pnv-php: Disable MSI and PCI device properly
  pci/hotplug/pnv-php: Disable surprise hotplug capability on conflicts
  pci/hotplug/pnv-php: Remove WARN_ON() in pnv_php_put_slot()
  powerpc: Add POWER9 architected mode to cputable
  powerpc/perf: use is_kernel_addr macro in perf_get_misc_flags()
  powerpc/perf: Avoid FAB_*_MATCH checks for power9
  powerpc/perf: Add restrictions to PMC5 in power9 DD1
  powerpc/perf: Use Instruction Counter value
  ...

10 files changed, 452 insertions, 92 deletions

diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile
index 7bc86dae9517..fe19dad568e2 100644
--- a/arch/powerpc/platforms/85xx/Makefile
+++ b/arch/powerpc/platforms/85xx/Makefile
@@ -22,6 +22,7 @@ obj-$(CONFIG_P1022_RDK)   += p1022_rdk.o
 obj-$(CONFIG_P1023_RDB)   += p1023_rdb.o
 obj-$(CONFIG_TWR_P102x)   += twr_p102x.o
 obj-$(CONFIG_CORENET_GENERIC)   += corenet_generic.o
+obj-$(CONFIG_FB_FSL_DIU)	+= t1042rdb_diu.o
 obj-$(CONFIG_STX_GP3)	  += stx_gp3.o
 obj-$(CONFIG_TQM85xx)	  += tqm85xx.o
 obj-$(CONFIG_SBC8548)     += sbc8548.o
diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c
index 6c0ba75fb256..ac191a7a1337 100644
--- a/arch/powerpc/platforms/85xx/corenet_generic.c
+++ b/arch/powerpc/platforms/85xx/corenet_generic.c
@@ -157,6 +157,7 @@ static const char * const boards[] __initconst = {
 	"fsl,T1040RDB",
 	"fsl,T1042RDB",
 	"fsl,T1042RDB_PI",
+	"keymile,kmcent2",
 	"keymile,kmcoge4",
 	"varisys,CYRUS",
 	NULL
diff --git a/arch/powerpc/platforms/85xx/t1042rdb_diu.c b/arch/powerpc/platforms/85xx/t1042rdb_diu.c
new file mode 100644
index 000000000000..58fa3d319f1c
--- /dev/null
+++ b/arch/powerpc/platforms/85xx/t1042rdb_diu.c
@@ -0,0 +1,152 @@
+/*
+ * T1042 platform DIU operation
+ *
+ * Copyright 2014 Freescale Semiconductor Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <sysdev/fsl_soc.h>
+
+/*DIU Pixel ClockCR offset in scfg*/
+#define CCSR_SCFG_PIXCLKCR      0x28
+
+/* DIU Pixel Clock bits of the PIXCLKCR */
+#define PIXCLKCR_PXCKEN		0x80000000
+#define PIXCLKCR_PXCKINV	0x40000000
+#define PIXCLKCR_PXCKDLY	0x0000FF00
+#define PIXCLKCR_PXCLK_MASK	0x00FF0000
+
+/* Some CPLD register definitions */
+#define CPLD_DIUCSR		0x16
+#define CPLD_DIUCSR_DVIEN	0x80
+#define CPLD_DIUCSR_BACKLIGHT	0x0f
+
+struct device_node *cpld_node;
+
+/**
+ * t1042rdb_set_monitor_port: switch the output to a different monitor port
+ */
+static void t1042rdb_set_monitor_port(enum fsl_diu_monitor_port port)
+{
+	static void __iomem *cpld_base;
+
+	cpld_base = of_iomap(cpld_node, 0);
+	if (!cpld_base) {
+		pr_err("%s: Could not map cpld registers\n", __func__);
+		goto exit;
+	}
+
+	switch (port) {
+	case FSL_DIU_PORT_DVI:
+		/* Enable the DVI(HDMI) port, disable the DFP and
+		 * the backlight
+		 */
+		clrbits8(cpld_base + CPLD_DIUCSR, CPLD_DIUCSR_DVIEN);
+		break;
+	case FSL_DIU_PORT_LVDS:
+		/*
+		 * LVDS also needs backlight enabled, otherwise the display
+		 * will be blank.
+		 */
+		/* Enable the DFP port, disable the DVI*/
+		setbits8(cpld_base + CPLD_DIUCSR, 0x01 << 8);
+		setbits8(cpld_base + CPLD_DIUCSR, 0x01 << 4);
+		setbits8(cpld_base + CPLD_DIUCSR, CPLD_DIUCSR_BACKLIGHT);
+		break;
+	default:
+		pr_err("%s: Unsupported monitor port %i\n", __func__, port);
+	}
+
+	iounmap(cpld_base);
+exit:
+	of_node_put(cpld_node);
+}
+
+/**
+ * t1042rdb_set_pixel_clock: program the DIU's clock
+ * @pixclock: pixel clock in ps (pico seconds)
+ */
+static void t1042rdb_set_pixel_clock(unsigned int pixclock)
+{
+	struct device_node *scfg_np;
+	void __iomem *scfg;
+	unsigned long freq;
+	u64 temp;
+	u32 pxclk;
+
+	scfg_np = of_find_compatible_node(NULL, NULL, "fsl,t1040-scfg");
+	if (!scfg_np) {
+		pr_err("%s: Missing scfg node. Can not display video.\n",
+		       __func__);
+		return;
+	}
+
+	scfg = of_iomap(scfg_np, 0);
+	of_node_put(scfg_np);
+	if (!scfg) {
+		pr_err("%s: Could not map device. Can not display video.\n",
+		       __func__);
+		return;
+	}
+
+	/* Convert pixclock into frequency */
+	temp = 1000000000000ULL;
+	do_div(temp, pixclock);
+	freq = temp;
+
+	/*
+	 * 'pxclk' is the ratio of the platform clock to the pixel clock.
+	 * This number is programmed into the PIXCLKCR register, and the valid
+	 * range of values is 2-255.
+	 */
+	pxclk = DIV_ROUND_CLOSEST(fsl_get_sys_freq(), freq);
+	pxclk = clamp_t(u32, pxclk, 2, 255);
+
+	/* Disable the pixel clock, and set it to non-inverted and no delay */
+	clrbits32(scfg + CCSR_SCFG_PIXCLKCR,
+		  PIXCLKCR_PXCKEN | PIXCLKCR_PXCKDLY | PIXCLKCR_PXCLK_MASK);
+
+	/* Enable the clock and set the pxclk */
+	setbits32(scfg + CCSR_SCFG_PIXCLKCR, PIXCLKCR_PXCKEN | (pxclk << 16));
+
+	iounmap(scfg);
+}
+
+/**
+ * t1042rdb_valid_monitor_port: set the monitor port for sysfs
+ */
+static enum fsl_diu_monitor_port
+t1042rdb_valid_monitor_port(enum fsl_diu_monitor_port port)
+{
+	switch (port) {
+	case FSL_DIU_PORT_DVI:
+	case FSL_DIU_PORT_LVDS:
+		return port;
+	default:
+		return FSL_DIU_PORT_DVI; /* Dual-link LVDS is not supported */
+	}
+}
+
+static int __init t1042rdb_diu_init(void)
+{
+	cpld_node = of_find_compatible_node(NULL, NULL, "fsl,t1042rdb-cpld");
+	if (!cpld_node)
+		return 0;
+
+	diu_ops.set_monitor_port	= t1042rdb_set_monitor_port;
+	diu_ops.set_pixel_clock		= t1042rdb_set_pixel_clock;
+	diu_ops.valid_monitor_port	= t1042rdb_valid_monitor_port;
+
+	return 0;
+}
+
+early_initcall(t1042rdb_diu_init);
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 6e89e5a8d4fb..99b0ae8acb78 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -172,6 +172,13 @@ config PPC_FPU
 	bool
 	default y if PPC64
 
+config PPC_8xx_PERF_EVENT
+	bool "PPC 8xx perf events"
+	depends on PPC_8xx && PERF_EVENTS
+	help
+	  This is Performance Events support for PPC 8xx. The 8xx doesn't
+	  have a PMU but some events are emulated using 8xx features.
+
 config FSL_EMB_PERFMON
 	bool "Freescale Embedded Perfmon"
 	depends on E500 || PPC_83xx
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index e5ec1368f0cd..ae2f740a82f1 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -683,23 +683,13 @@ size_t spu_ibox_read(struct spu_context *ctx, u32 *data)
 	return ctx->ops->ibox_read(ctx, data);
 }
 
-static int spufs_ibox_fasync(int fd, struct file *file, int on)
-{
-	struct spu_context *ctx = file->private_data;
-
-	return fasync_helper(fd, file, on, &ctx->ibox_fasync);
-}
-
 /* interrupt-level ibox callback function. */
 void spufs_ibox_callback(struct spu *spu)
 {
 	struct spu_context *ctx = spu->ctx;
 
-	if (!ctx)
-		return;
-
-	wake_up_all(&ctx->ibox_wq);
-	kill_fasync(&ctx->ibox_fasync, SIGIO, POLLIN);
+	if (ctx)
+		wake_up_all(&ctx->ibox_wq);
 }
 
 /*
@@ -794,7 +784,6 @@ static const struct file_operations spufs_ibox_fops = {
 	.open	= spufs_pipe_open,
 	.read	= spufs_ibox_read,
 	.poll	= spufs_ibox_poll,
-	.fasync	= spufs_ibox_fasync,
 	.llseek = no_llseek,
 };
 
@@ -832,26 +821,13 @@ size_t spu_wbox_write(struct spu_context *ctx, u32 data)
 	return ctx->ops->wbox_write(ctx, data);
 }
 
-static int spufs_wbox_fasync(int fd, struct file *file, int on)
-{
-	struct spu_context *ctx = file->private_data;
-	int ret;
-
-	ret = fasync_helper(fd, file, on, &ctx->wbox_fasync);
-
-	return ret;
-}
-
 /* interrupt-level wbox callback function. */
 void spufs_wbox_callback(struct spu *spu)
 {
 	struct spu_context *ctx = spu->ctx;
 
-	if (!ctx)
-		return;
-
-	wake_up_all(&ctx->wbox_wq);
-	kill_fasync(&ctx->wbox_fasync, SIGIO, POLLOUT);
+	if (ctx)
+		wake_up_all(&ctx->wbox_wq);
 }
 
 /*
@@ -944,7 +920,6 @@ static const struct file_operations spufs_wbox_fops = {
 	.open	= spufs_pipe_open,
 	.write	= spufs_wbox_write,
 	.poll	= spufs_wbox_poll,
-	.fasync	= spufs_wbox_fasync,
 	.llseek = no_llseek,
 };
 
@@ -1520,28 +1495,8 @@ void spufs_mfc_callback(struct spu *spu)
 {
 	struct spu_context *ctx = spu->ctx;
 
-	if (!ctx)
-		return;
-
-	wake_up_all(&ctx->mfc_wq);
-
-	pr_debug("%s %s\n", __func__, spu->name);
-	if (ctx->mfc_fasync) {
-		u32 free_elements, tagstatus;
-		unsigned int mask;
-
-		/* no need for spu_acquire in interrupt context */
-		free_elements = ctx->ops->get_mfc_free_elements(ctx);
-		tagstatus = ctx->ops->read_mfc_tagstatus(ctx);
-
-		mask = 0;
-		if (free_elements & 0xffff)
-			mask |= POLLOUT;
-		if (tagstatus & ctx->tagwait)
-			mask |= POLLIN;
-
-		kill_fasync(&ctx->mfc_fasync, SIGIO, mask);
-	}
+	if (ctx)
+		wake_up_all(&ctx->mfc_wq);
 }
 
 static int spufs_read_mfc_tagstatus(struct spu_context *ctx, u32 *status)
@@ -1803,13 +1758,6 @@ static int spufs_mfc_fsync(struct file *file, loff_t start, loff_t end, int data
 	return err;
 }
 
-static int spufs_mfc_fasync(int fd, struct file *file, int on)
-{
-	struct spu_context *ctx = file->private_data;
-
-	return fasync_helper(fd, file, on, &ctx->mfc_fasync);
-}
-
 static const struct file_operations spufs_mfc_fops = {
 	.open	 = spufs_mfc_open,
 	.release = spufs_mfc_release,
@@ -1818,7 +1766,6 @@ static const struct file_operations spufs_mfc_fops = {
 	.poll	 = spufs_mfc_poll,
 	.flush	 = spufs_mfc_flush,
 	.fsync	 = spufs_mfc_fsync,
-	.fasync	 = spufs_mfc_fasync,
 	.mmap	 = spufs_mfc_mmap,
 	.llseek  = no_llseek,
 };
diff --git a/arch/powerpc/platforms/cell/spufs/spufs.h b/arch/powerpc/platforms/cell/spufs/spufs.h
index bcfd6f063efa..aac733966092 100644
--- a/arch/powerpc/platforms/cell/spufs/spufs.h
+++ b/arch/powerpc/platforms/cell/spufs/spufs.h
@@ -102,9 +102,6 @@ struct spu_context {
 	wait_queue_head_t stop_wq;
 	wait_queue_head_t mfc_wq;
 	wait_queue_head_t run_wq;
-	struct fasync_struct *ibox_fasync;
-	struct fasync_struct *wbox_fasync;
-	struct fasync_struct *mfc_fasync;
 	u32 tagwait;
 	struct spu_context_ops *ops;
 	struct work_struct reap_work;
diff --git a/arch/powerpc/platforms/powernv/Kconfig b/arch/powerpc/platforms/powernv/Kconfig
index 604190cab522..3a07e4dcf97c 100644
--- a/arch/powerpc/platforms/powernv/Kconfig
+++ b/arch/powerpc/platforms/powernv/Kconfig
@@ -5,7 +5,8 @@ config PPC_POWERNV
 	select PPC_XICS
 	select PPC_ICP_NATIVE
 	select PPC_P7_NAP
-	select PPC_PCI_CHOICE if EMBEDDED
+	select PCI
+	select PCI_MSI
 	select EPAPR_BOOT
 	select PPC_INDIRECT_PIO
 	select PPC_UDBG_16550
diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
index e0f83c204ccc..6901a06da2f9 100644
--- a/arch/powerpc/platforms/powernv/pci-ioda.c
+++ b/arch/powerpc/platforms/powernv/pci-ioda.c
@@ -1468,14 +1468,12 @@ void pnv_pci_sriov_disable(struct pci_dev *pdev)
 	struct pnv_phb        *phb;
 	struct pnv_ioda_pe    *pe;
 	struct pci_dn         *pdn;
-	struct pci_sriov      *iov;
 	u16                    num_vfs, i;
 
 	bus = pdev->bus;
 	hose = pci_bus_to_host(bus);
 	phb = hose->private_data;
 	pdn = pci_get_pdn(pdev);
-	iov = pdev->sriov;
 	num_vfs = pdn->num_vfs;
 
 	/* Release VF PEs */
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c
index d3a81e746fc4..193e052fa0dd 100644
--- a/arch/powerpc/platforms/pseries/dlpar.c
+++ b/arch/powerpc/platforms/pseries/dlpar.c
@@ -354,11 +354,17 @@ static int handle_dlpar_errorlog(struct pseries_hp_errorlog *hp_elog)
 	switch (hp_elog->id_type) {
 	case PSERIES_HP_ELOG_ID_DRC_COUNT:
 		hp_elog->_drc_u.drc_count =
-					be32_to_cpu(hp_elog->_drc_u.drc_count);
+				be32_to_cpu(hp_elog->_drc_u.drc_count);
 		break;
 	case PSERIES_HP_ELOG_ID_DRC_INDEX:
 		hp_elog->_drc_u.drc_index =
-					be32_to_cpu(hp_elog->_drc_u.drc_index);
+				be32_to_cpu(hp_elog->_drc_u.drc_index);
+		break;
+	case PSERIES_HP_ELOG_ID_DRC_IC:
+		hp_elog->_drc_u.ic.count =
+				be32_to_cpu(hp_elog->_drc_u.ic.count);
+		hp_elog->_drc_u.ic.index =
+				be32_to_cpu(hp_elog->_drc_u.ic.index);
 	}
 
 	switch (hp_elog->resource) {
@@ -467,7 +473,33 @@ static int dlpar_parse_id_type(char **cmd, struct pseries_hp_errorlog *hp_elog)
 	if (!arg)
 		return -EINVAL;
 
-	if (sysfs_streq(arg, "index")) {
+	if (sysfs_streq(arg, "indexed-count")) {
+		hp_elog->id_type = PSERIES_HP_ELOG_ID_DRC_IC;
+		arg = strsep(cmd, " ");
+		if (!arg) {
+			pr_err("No DRC count specified.\n");
+			return -EINVAL;
+		}
+
+		if (kstrtou32(arg, 0, &count)) {
+			pr_err("Invalid DRC count specified.\n");
+			return -EINVAL;
+		}
+
+		arg = strsep(cmd, " ");
+		if (!arg) {
+			pr_err("No DRC Index specified.\n");
+			return -EINVAL;
+		}
+
+		if (kstrtou32(arg, 0, &index)) {
+			pr_err("Invalid DRC Index specified.\n");
+			return -EINVAL;
+		}
+
+		hp_elog->_drc_u.ic.count = cpu_to_be32(count);
+		hp_elog->_drc_u.ic.index = cpu_to_be32(index);
+	} else if (sysfs_streq(arg, "index")) {
 		hp_elog->id_type = PSERIES_HP_ELOG_ID_DRC_INDEX;
 		arg = strsep(cmd, " ");
 		if (!arg) {
diff --git a/arch/powerpc/platforms/pseries/hotplug-memory.c b/arch/powerpc/platforms/pseries/hotplug-memory.c
index 3381c20edbc0..e104c71ea44a 100644
--- a/arch/powerpc/platforms/pseries/hotplug-memory.c
+++ b/arch/powerpc/platforms/pseries/hotplug-memory.c
@@ -320,6 +320,19 @@ static int dlpar_remove_device_tree_lmb(struct of_drconf_cell *lmb)
 	return dlpar_update_device_tree_lmb(lmb);
 }
 
+static struct memory_block *lmb_to_memblock(struct of_drconf_cell *lmb)
+{
+	unsigned long section_nr;
+	struct mem_section *mem_sect;
+	struct memory_block *mem_block;
+
+	section_nr = pfn_to_section_nr(PFN_DOWN(lmb->base_addr));
+	mem_sect = __nr_to_section(section_nr);
+
+	mem_block = find_memory_block(mem_sect);
+	return mem_block;
+}
+
 #ifdef CONFIG_MEMORY_HOTREMOVE
 static int pseries_remove_memblock(unsigned long base, unsigned int memblock_size)
 {
@@ -407,19 +420,6 @@ static bool lmb_is_removable(struct of_drconf_cell *lmb)
 
 static int dlpar_add_lmb(struct of_drconf_cell *);
 
-static struct memory_block *lmb_to_memblock(struct of_drconf_cell *lmb)
-{
-	unsigned long section_nr;
-	struct mem_section *mem_sect;
-	struct memory_block *mem_block;
-
-	section_nr = pfn_to_section_nr(PFN_DOWN(lmb->base_addr));
-	mem_sect = __nr_to_section(section_nr);
-
-	mem_block = find_memory_block(mem_sect);
-	return mem_block;
-}
-
 static int dlpar_remove_lmb(struct of_drconf_cell *lmb)
 {
 	struct memory_block *mem_block;
@@ -601,6 +601,94 @@ static int dlpar_memory_readd_by_index(u32 drc_index, struct property *prop)
 
 	return rc;
 }
+
+static int dlpar_memory_remove_by_ic(u32 lmbs_to_remove, u32 drc_index,
+				     struct property *prop)
+{
+	struct of_drconf_cell *lmbs;
+	u32 num_lmbs, *p;
+	int i, rc, start_lmb_found;
+	int lmbs_available = 0, start_index = 0, end_index;
+
+	pr_info("Attempting to hot-remove %u LMB(s) at %x\n",
+		lmbs_to_remove, drc_index);
+
+	if (lmbs_to_remove == 0)
+		return -EINVAL;
+
+	p = prop->value;
+	num_lmbs = *p++;
+	lmbs = (struct of_drconf_cell *)p;
+	start_lmb_found = 0;
+
+	/* Navigate to drc_index */
+	while (start_index < num_lmbs) {
+		if (lmbs[start_index].drc_index == drc_index) {
+			start_lmb_found = 1;
+			break;
+		}
+
+		start_index++;
+	}
+
+	if (!start_lmb_found)
+		return -EINVAL;
+
+	end_index = start_index + lmbs_to_remove;
+
+	/* Validate that there are enough LMBs to satisfy the request */
+	for (i = start_index; i < end_index; i++) {
+		if (lmbs[i].flags & DRCONF_MEM_RESERVED)
+			break;
+
+		lmbs_available++;
+	}
+
+	if (lmbs_available < lmbs_to_remove)
+		return -EINVAL;
+
+	for (i = start_index; i < end_index; i++) {
+		if (!(lmbs[i].flags & DRCONF_MEM_ASSIGNED))
+			continue;
+
+		rc = dlpar_remove_lmb(&lmbs[i]);
+		if (rc)
+			break;
+
+		lmbs[i].reserved = 1;
+	}
+
+	if (rc) {
+		pr_err("Memory indexed-count-remove failed, adding any removed LMBs\n");
+
+		for (i = start_index; i < end_index; i++) {
+			if (!lmbs[i].reserved)
+				continue;
+
+			rc = dlpar_add_lmb(&lmbs[i]);
+			if (rc)
+				pr_err("Failed to add LMB, drc index %x\n",
+				       be32_to_cpu(lmbs[i].drc_index));
+
+			lmbs[i].reserved = 0;
+		}
+		rc = -EINVAL;
+	} else {
+		for (i = start_index; i < end_index; i++) {
+			if (!lmbs[i].reserved)
+				continue;
+
+			dlpar_release_drc(lmbs[i].drc_index);
+			pr_info("Memory at %llx (drc index %x) was hot-removed\n",
+				lmbs[i].base_addr, lmbs[i].drc_index);
+
+			lmbs[i].reserved = 0;
+		}
+	}
+
+	return rc;
+}
+
 #else
 static inline int pseries_remove_memblock(unsigned long base,
 					  unsigned int memblock_size)
@@ -628,9 +716,32 @@ static int dlpar_memory_remove_by_index(u32 drc_index, struct property *prop)
 {
 	return -EOPNOTSUPP;
 }
+static int dlpar_memory_readd_by_index(u32 drc_index, struct property *prop)
+{
+	return -EOPNOTSUPP;
+}
 
+static int dlpar_memory_remove_by_ic(u32 lmbs_to_remove, u32 drc_index,
+				     struct property *prop)
+{
+	return -EOPNOTSUPP;
+}
 #endif /* CONFIG_MEMORY_HOTREMOVE */
 
+static int dlpar_online_lmb(struct of_drconf_cell *lmb)
+{
+	struct memory_block *mem_block;
+	int rc;
+
+	mem_block = lmb_to_memblock(lmb);
+	if (!mem_block)
+		return -EINVAL;
+
+	rc = device_online(&mem_block->dev);
+	put_device(&mem_block->dev);
+	return rc;
+}
+
 static int dlpar_add_lmb(struct of_drconf_cell *lmb)
 {
 	unsigned long block_sz;
@@ -654,10 +765,18 @@ 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);
-	else
+		return rc;
+	}
+
+	rc = dlpar_online_lmb(lmb);
+	if (rc) {
+		remove_memory(nid, lmb->base_addr, block_sz);
+		dlpar_remove_device_tree_lmb(lmb);
+	} else {
 		lmb->flags |= DRCONF_MEM_ASSIGNED;
+	}
 
 	return rc;
 }
@@ -776,6 +895,97 @@ static int dlpar_memory_add_by_index(u32 drc_index, struct property *prop)
 	return rc;
 }
 
+static int dlpar_memory_add_by_ic(u32 lmbs_to_add, u32 drc_index,
+				  struct property *prop)
+{
+	struct of_drconf_cell *lmbs;
+	u32 num_lmbs, *p;
+	int i, rc, start_lmb_found;
+	int lmbs_available = 0, start_index = 0, end_index;
+
+	pr_info("Attempting to hot-add %u LMB(s) at index %x\n",
+		lmbs_to_add, drc_index);
+
+	if (lmbs_to_add == 0)
+		return -EINVAL;
+
+	p = prop->value;
+	num_lmbs = *p++;
+	lmbs = (struct of_drconf_cell *)p;
+	start_lmb_found = 0;
+
+	/* Navigate to drc_index */
+	while (start_index < num_lmbs) {
+		if (lmbs[start_index].drc_index == drc_index) {
+			start_lmb_found = 1;
+			break;
+		}
+
+		start_index++;
+	}
+
+	if (!start_lmb_found)
+		return -EINVAL;
+
+	end_index = start_index + lmbs_to_add;
+
+	/* Validate that the LMBs in this range are not reserved */
+	for (i = start_index; i < end_index; i++) {
+		if (lmbs[i].flags & DRCONF_MEM_RESERVED)
+			break;
+
+		lmbs_available++;
+	}
+
+	if (lmbs_available < lmbs_to_add)
+		return -EINVAL;
+
+	for (i = start_index; i < end_index; i++) {
+		if (lmbs[i].flags & DRCONF_MEM_ASSIGNED)
+			continue;
+
+		rc = dlpar_acquire_drc(lmbs[i].drc_index);
+		if (rc)
+			break;
+
+		rc = dlpar_add_lmb(&lmbs[i]);
+		if (rc) {
+			dlpar_release_drc(lmbs[i].drc_index);
+			break;
+		}
+
+		lmbs[i].reserved = 1;
+	}
+
+	if (rc) {
+		pr_err("Memory indexed-count-add failed, removing any added LMBs\n");
+
+		for (i = start_index; i < end_index; i++) {
+			if (!lmbs[i].reserved)
+				continue;
+
+			rc = dlpar_remove_lmb(&lmbs[i]);
+			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 {
+		for (i = start_index; i < end_index; i++) {
+			if (!lmbs[i].reserved)
+				continue;
+
+			pr_info("Memory at %llx (drc index %x) was hot-added\n",
+				lmbs[i].base_addr, lmbs[i].drc_index);
+			lmbs[i].reserved = 0;
+		}
+	}
+
+	return rc;
+}
+
 int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
 {
 	struct device_node *dn;
@@ -783,9 +993,6 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
 	u32 count, drc_index;
 	int rc;
 
-	count = hp_elog->_drc_u.drc_count;
-	drc_index = hp_elog->_drc_u.drc_index;
-
 	lock_device_hotplug();
 
 	dn = of_find_node_by_path("/ibm,dynamic-reconfiguration-memory");
@@ -802,22 +1009,39 @@ int dlpar_memory(struct pseries_hp_errorlog *hp_elog)
 
 	switch (hp_elog->action) {
 	case PSERIES_HP_ELOG_ACTION_ADD:
-		if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT)
+		if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
+			count = hp_elog->_drc_u.drc_count;
 			rc = dlpar_memory_add_by_count(count, prop);
-		else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX)
+		} else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
+			drc_index = hp_elog->_drc_u.drc_index;
 			rc = dlpar_memory_add_by_index(drc_index, prop);
-		else
+		} else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
+			count = hp_elog->_drc_u.ic.count;
+			drc_index = hp_elog->_drc_u.ic.index;
+			rc = dlpar_memory_add_by_ic(count, drc_index, prop);
+		} else {
 			rc = -EINVAL;
+		}
+
 		break;
 	case PSERIES_HP_ELOG_ACTION_REMOVE:
-		if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT)
+		if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_COUNT) {
+			count = hp_elog->_drc_u.drc_count;
 			rc = dlpar_memory_remove_by_count(count, prop);
-		else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX)
+		} else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_INDEX) {
+			drc_index = hp_elog->_drc_u.drc_index;
 			rc = dlpar_memory_remove_by_index(drc_index, prop);
-		else
+		} else if (hp_elog->id_type == PSERIES_HP_ELOG_ID_DRC_IC) {
+			count = hp_elog->_drc_u.ic.count;
+			drc_index = hp_elog->_drc_u.ic.index;
+			rc = dlpar_memory_remove_by_ic(count, drc_index, prop);
+		} else {
 			rc = -EINVAL;
+		}
+
 		break;
 	case PSERIES_HP_ELOG_ACTION_READD:
+		drc_index = hp_elog->_drc_u.drc_index;
 		rc = dlpar_memory_readd_by_index(drc_index, prop);
 		break;
 	default: