diff --git a/arch/powerpc/include/asm/checkpoint_hdr.h b/arch/powerpc/include/asm/checkpoint_hdr.h
new file mode 100644
index 0000000..9f0d099
--- /dev/null
+++ b/arch/powerpc/include/asm/checkpoint_hdr.h
@@ -0,0 +1,15 @@
+#ifndef __ASM_PPC_CKPT_HDR_H
+#define __ASM_PPC_CKPT_HDR_H
+/*
+ *  Checkpoint/restart - architecture specific headers ppc
+ *
+ *  Copyright (C) 2008 Oren Laadan
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of the Linux
+ *  distribution for more details.
+ */
+
+/* nothing to see here */
+
+#endif /* __ASM_PPC_CKPT_HDR__H */
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index e7392b4..8a523a0 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -24,3 +24,4 @@ obj-$(CONFIG_NEED_MULTIPLE_NODES) += numa.o
 obj-$(CONFIG_PPC_MM_SLICES)	+= slice.o
 obj-$(CONFIG_HUGETLB_PAGE)	+= hugetlbpage.o
 obj-$(CONFIG_PPC_SUBPAGE_PROT)	+= subpage-prot.o
+obj-$(CONFIG_CHECKPOINT_RESTART) += checkpoint.o
diff --git a/arch/powerpc/mm/checkpoint.c b/arch/powerpc/mm/checkpoint.c
new file mode 100644
index 0000000..afc2138
--- /dev/null
+++ b/arch/powerpc/mm/checkpoint.c
@@ -0,0 +1,482 @@
+/*
+ *  Checkpoint/restart - architecture specific support for powerpc.
+ *  Based on x86 implementation.
+ *
+ *  Copyright (C) 2008 Oren Laadan
+ *  Copyright 2009 IBM Corp.
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of the Linux
+ *  distribution for more details.
+ */
+
+#define DEBUG 1 /* for pr_debug */
+
+#include <linux/checkpoint.h>
+#include <linux/checkpoint_hdr.h>
+#include <linux/kernel.h>
+#include <asm/processor.h>
+#include <asm/ptrace.h>
+#include <asm/system.h>
+
+enum cr_cpu_feature {
+	CKPT_USED_FP,
+	CKPT_USED_DEBUG,
+	CKPT_USED_ALTIVEC,
+	CKPT_USED_SPE,
+	CKPT_USED_VSX,
+	CKPT_FTR_END = 31,
+};
+
+#define x(ftr) (1UL << ftr)
+
+/* features this kernel can handle for restart */
+enum {
+	CKPT_FTRS_POSSIBLE =
+#ifdef CONFIG_PPC_FPU
+	x(CKPT_USED_FP) |
+#endif
+	x(CKPT_USED_DEBUG) |
+#ifdef CONFIG_ALTIVEC
+	x(CKPT_USED_ALTIVEC) |
+#endif
+#ifdef CONFIG_SPE
+	x(CKPT_USED_SPE) |
+#endif
+#ifdef CONFIG_VSX
+	x(CKPT_USED_VSX)
+#endif
+	0,
+};
+
+#undef x
+
+struct cr_hdr_cpu {
+	u32 features_used;
+	u32 pt_regs_size;
+	u32 fpr_size;
+	struct pt_regs pt_regs;
+	/* relevant fields from thread_struct */
+	double fpr[32][TS_FPRWIDTH];
+	u32 fpscr;
+	s32 fpexc_mode;
+	u64 dabr;
+	/* Altivec/VMX state */
+	vector128 vr[32];
+	vector128 vscr;
+	u64 vrsave;
+	/* SPE state */
+	u32 evr[32];
+	u64 acc;
+	u32 spefscr;
+};
+
+static void cr_cpu_feature_set(struct cr_hdr_cpu *hdr, enum cr_cpu_feature ftr)
+{
+	hdr->features_used |= 1ULL << ftr;
+}
+
+static bool cr_cpu_feature_isset(const struct cr_hdr_cpu *hdr, enum cr_cpu_feature ftr)
+{
+	return hdr->features_used & (1ULL << ftr);
+}
+
+/* determine whether an image has feature bits set that this kernel
+ * does not support */
+static bool cr_cpu_features_unknown(const struct cr_hdr_cpu *hdr)
+{
+	return hdr->features_used & ~CKPT_FTRS_POSSIBLE;
+}
+
+static void checkpoint_gprs(struct cr_hdr_cpu *cpu_hdr, struct task_struct *task)
+{
+	struct pt_regs *pt_regs;
+
+	pr_debug("%s: saving GPRs\n", __func__);
+
+	cpu_hdr->pt_regs_size = sizeof(*pt_regs);
+	pt_regs = task_pt_regs(task);
+	cpu_hdr->pt_regs = *pt_regs;
+}
+
+#ifdef CONFIG_PPC_FPU
+static void checkpoint_fpu(struct cr_hdr_cpu *cpu_hdr, struct task_struct *task)
+{
+	/* easiest to save FP state unconditionally */
+
+	pr_debug("%s: saving FPU state\n", __func__);
+
+	if (task == current)
+		flush_fp_to_thread(task);
+
+	cpu_hdr->fpr_size = sizeof(cpu_hdr->fpr);
+	cpu_hdr->fpscr = task->thread.fpscr.val;
+	cpu_hdr->fpexc_mode = task->thread.fpexc_mode;
+
+	memcpy(cpu_hdr->fpr, task->thread.fpr, sizeof(cpu_hdr->fpr));
+
+	cr_cpu_feature_set(cpu_hdr, CKPT_USED_FP);
+}
+#else
+static void checkpoint_fpu(struct cr_hdr_cpu *cpu_hdr, struct task_struct *task)
+{
+	return;
+}
+#endif
+
+#ifdef CONFIG_ALTIVEC
+static void checkpoint_altivec(struct cr_hdr_cpu *cpu_hdr, struct task_struct *task)
+{
+	if (!cpu_has_feature(CPU_FTR_ALTIVEC))
+		return;
+
+	if (!task->thread.used_vr)
+		return;
+
+	pr_debug("%s: saving Altivec state\n", __func__);
+
+	if (task == current)
+		flush_altivec_to_thread(task);
+
+	cpu_hdr->vrsave = task->thread.vrsave;
+	memcpy(cpu_hdr->vr, task->thread.vr, sizeof(cpu_hdr->vr));
+	cr_cpu_feature_set(cpu_hdr, CKPT_USED_ALTIVEC);
+}
+#else
+static void checkpoint_altivec(struct cr_hdr_cpu *cpu_hdr, struct task_struct *task)
+{
+	return;
+}
+#endif
+
+#ifdef CONFIG_SPE
+static void checkpoint_spe(struct cr_hdr_cpu *cpu_hdr, struct task_struct *task)
+{
+	if (!cpu_has_feature(CPU_FTR_SPE))
+		return;
+
+	if (!task->thread.used_spe)
+		return;
+
+	pr_debug("%s: saving SPE state\n", __func__);
+
+	if (task == current)
+		flush_spe_to_thread(task);
+
+	cpu_hdr->acc = task->thread.acc;
+	cpu_hdr->spefscr = task->thread.spefscr;
+	memcpy(cpu_hdr->evr, task->thread.evr, sizeof(cpu_hdr->evr));
+	cr_cpu_feature_set(cpu_hdr, CKPT_USED_SPE);
+}
+#else
+static void checkpoint_spe(struct cr_hdr_cpu *cpu_hdr, struct task_struct *task)
+{
+	return;
+}
+#endif
+
+static void checkpoint_dabr(struct cr_hdr_cpu *cpu_hdr, const struct task_struct *task)
+{
+	if (!task->thread.dabr)
+		return;
+
+	cpu_hdr->dabr = task->thread.dabr;
+	cr_cpu_feature_set(cpu_hdr, CKPT_USED_DEBUG);
+}
+
+/* dump the thread_struct of a given task */
+int cr_write_thread(struct cr_ctx *ctx, struct task_struct *t)
+{
+	return 0;
+}
+
+/* dump the cpu state and registers of a given task */
+int cr_write_cpu(struct cr_ctx *ctx, struct task_struct *t)
+{
+	struct cr_hdr_cpu *cpu_hdr;
+	struct cr_hdr cr_hdr;
+	int rc;
+
+	cr_hdr.type = CR_HDR_CPU;
+	cr_hdr.len = sizeof(*cpu_hdr);
+	cr_hdr.parent = task_pid_vnr(t);
+
+	rc = -ENOMEM;
+	cpu_hdr = kzalloc(sizeof(*cpu_hdr), GFP_KERNEL);
+	if (!cpu_hdr)
+		goto err;
+
+	checkpoint_gprs(cpu_hdr, t);
+	checkpoint_fpu(cpu_hdr, t);
+	checkpoint_dabr(cpu_hdr, t);
+	checkpoint_altivec(cpu_hdr, t);
+	checkpoint_spe(cpu_hdr, t);
+
+	rc = cr_write_obj(ctx, &cr_hdr, cpu_hdr);
+err:
+	kfree(cpu_hdr);
+	return rc;
+}
+
+int cr_write_head_arch(struct cr_ctx *ctx)
+{
+	return 0;
+}
+
+/* dump the mm->context state */
+int cr_write_mm_context(struct cr_ctx *ctx, struct mm_struct *mm, int parent)
+{
+	return 0;
+}
+
+/* restart APIs */
+
+/* read the thread_struct into the current task */
+int cr_read_thread(struct cr_ctx *ctx)
+{
+	return 0;
+}
+
+/* Based on the MSR value from a checkpoint image, produce an MSR
+ * value that is appropriate for the restored task.  Right now we only
+ * check for MSR_SF (64-bit) for PPC64.
+ */
+static unsigned long sanitize_msr(unsigned long msr_ckpt)
+{
+#ifdef CONFIG_PPC32
+	return MSR_USER;
+#else
+	if (msr_ckpt & MSR_SF)
+		return MSR_USER64;
+	return MSR_USER32;
+#endif
+}
+
+static int restore_gprs(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	struct pt_regs *regs;
+	int rc;
+
+	rc = -EINVAL;
+	if (cpu_hdr->pt_regs_size != sizeof(*regs))
+		goto out;
+
+	rc = 0;
+	if (!update)
+		goto out;
+
+	regs = task_pt_regs(task);
+	*regs = cpu_hdr->pt_regs;
+
+	regs->msr = sanitize_msr(regs->msr);
+out:
+	return rc;
+}
+
+#ifdef CONFIG_PPC_FPU
+static int restore_fpu(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	int rc;
+
+	rc = -EINVAL;
+	if (cpu_hdr->fpr_size != sizeof(task->thread.fpr))
+		goto out;
+
+	rc = 0;
+	if (!update || !cr_cpu_feature_isset(cpu_hdr, CKPT_USED_FP))
+		goto out;
+
+	task->thread.fpscr.val = cpu_hdr->fpscr;
+	task->thread.fpexc_mode = cpu_hdr->fpexc_mode;
+
+	memcpy(task->thread.fpr, cpu_hdr->fpr, sizeof(task->thread.fpr));
+out:
+	return rc;
+}
+#else
+static int restore_fpu(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	WARN_ON_ONCE(cr_cpu_feature_isset(cpu_hdr, CKPT_USED_FP));
+	return 0;
+}
+#endif
+
+static int restore_dabr(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	int rc;
+
+	rc = 0;
+	if (!cr_cpu_feature_isset(cpu_hdr, CKPT_USED_DEBUG))
+		goto out;
+
+	rc = -EINVAL;
+	if (!debugreg_valid(cpu_hdr->dabr))
+		goto out;
+
+	rc = 0;
+	if (!update)
+		goto out;
+
+	debugreg_update(task, cpu_hdr->dabr);
+out:
+	return rc;
+}
+
+#ifdef CONFIG_ALTIVEC
+static int restore_altivec(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	int rc;
+
+	rc = 0;
+	if (!cr_cpu_feature_isset(cpu_hdr, CKPT_USED_ALTIVEC))
+		goto out;
+
+	rc = -EINVAL;
+	if (!cpu_has_feature(CPU_FTR_ALTIVEC))
+		goto out;
+
+	rc = 0;
+	if (!update)
+		goto out;
+
+	task->thread.vrsave = cpu_hdr->vrsave;
+	task->thread.used_vr = 1;
+
+	memcpy(task->thread.vr, cpu_hdr->vr, sizeof(cpu_hdr->vr));
+out:
+	return rc;
+}
+#else
+static int restore_altivec(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	WARN_ON_ONCE(cr_cpu_feature_isset(CKPT_USED_ALTIVEC));
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_SPE
+static int restore_spe(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	int rc;
+
+	rc = 0;
+	if (!cr_cpu_feature_isset(cpu_hdr, CKPT_USED_SPE))
+		goto out;
+
+	rc = -EINVAL;
+	if (!cpu_has_feature(CPU_FTR_SPE))
+		goto out;
+
+	rc = 0;
+	if (!update)
+		goto out;
+
+	task->thread.acc = cpu_hdr->acc;
+	task->thread.spefscr = cpu_hdr->spefscr;
+	task->thread.used_spe = 1;
+
+	memcpy(task->thread.evr, cpu_hdr->evr, sizeof(cpu_hdr->evr));
+out:
+	return rc;
+}
+#else
+static int restore_spe(const struct cr_hdr_cpu *cpu_hdr, struct task_struct *task, bool update)
+{
+	WARN_ON_ONCE(cr_cpu_feature_isset(cpu_hdr, CKPT_USED_SPE));
+	return 0;
+}
+#endif
+
+struct restore_func_desc {
+	int (*func)(const struct cr_hdr_cpu *, struct task_struct *, bool);
+	const char *info;
+};
+
+typedef int (*restore_func_t)(const struct cr_hdr_cpu *, struct task_struct *, bool);
+
+static const restore_func_t restore_funcs[] = {
+	restore_gprs,
+	restore_fpu,
+	restore_dabr,
+	restore_altivec,
+	restore_spe,
+};
+
+static bool bitness_match(const struct cr_hdr_cpu *cpu_hdr, const struct task_struct *task)
+{
+	/* 64-bit image */
+	if (cpu_hdr->pt_regs.msr & MSR_SF) {
+		if (task->thread.regs->msr & MSR_SF)
+			return true;
+		else
+			return false;
+	}
+
+	/* 32-bit image */
+	if (task->thread.regs->msr & MSR_SF)
+		return false;
+
+	return true;
+}
+
+int cr_read_cpu(struct cr_ctx *ctx)
+{
+	struct cr_hdr_cpu *cpu_hdr;
+	bool update;
+	int rc;
+	int i;
+
+	rc = -ENOMEM;
+	cpu_hdr = kzalloc(sizeof(*cpu_hdr), GFP_KERNEL);
+	if (!cpu_hdr)
+		goto err;
+
+	rc = cr_read_obj_type(ctx, cpu_hdr, sizeof(*cpu_hdr), CR_HDR_CPU);
+	if (rc < 0)
+		goto err;
+
+	rc = -EINVAL;
+	if (cr_cpu_features_unknown(cpu_hdr))
+		goto err;
+
+	/* temporary: restoring a 32-bit image from a 64-bit task and
+	 * vice-versa is known not to work (probably not restoring
+	 * thread_info correctly); detect this and fail gracefully.
+	 */
+	if (!bitness_match(cpu_hdr, current))
+		goto err;
+
+	/* We want to determine whether there's anything wrong with
+	 * the checkpoint image before changing the task at all.  Run
+	 * a "check" phase (update = false) first.
+	 */
+	update = false;
+commit:
+	for (i = 0; i < ARRAY_SIZE(restore_funcs); i++) {
+		rc = restore_funcs[i](cpu_hdr, current, update);
+		if (rc == 0)
+			continue;
+		pr_debug("%s: restore_func[%i] failed\n", __func__, i);
+		WARN_ON_ONCE(update);
+		goto err;
+	}
+
+	if (!update) {
+		update = true;
+		goto commit;
+	}
+
+err:
+	kfree(cpu_hdr);
+	return rc;
+}
+
+int cr_read_head_arch(struct cr_ctx *ctx)
+{
+	return 0;
+}
+
+int cr_read_mm_context(struct cr_ctx *ctx, struct mm_struct *mm, int rparent)
+{
+	return 0;
+}
