Merge tag 'v3.10' into sdk-kernel-3.10

git rebase --continue

Linux 3.10

Conflicts:
	Documentation/virtual/kvm/api.txt
	arch/ia64/kvm/Makefile
	arch/powerpc/Kconfig
	arch/powerpc/Makefile
	arch/powerpc/boot/dts/b4420qds.dts
	arch/powerpc/boot/dts/b4860qds.dts
	arch/powerpc/boot/dts/b4qds.dts
	arch/powerpc/boot/dts/fsl/b4420si-post.dtsi
	arch/powerpc/boot/dts/fsl/b4420si-pre.dtsi
	arch/powerpc/boot/dts/fsl/b4860si-post.dtsi
	arch/powerpc/boot/dts/fsl/b4860si-pre.dtsi
	arch/powerpc/boot/dts/fsl/b4si-post.dtsi
	arch/powerpc/boot/dts/fsl/p1010si-post.dtsi
	arch/powerpc/boot/dts/fsl/p2041si-post.dtsi
	arch/powerpc/boot/dts/fsl/p3041si-post.dtsi
	arch/powerpc/boot/dts/fsl/p4080si-post.dtsi
	arch/powerpc/boot/dts/fsl/p5020si-post.dtsi
	arch/powerpc/boot/dts/fsl/p5040si-post.dtsi
	arch/powerpc/boot/dts/fsl/qonverge-usb2-dr-0.dtsi
	arch/powerpc/boot/dts/fsl/qoriq-sec5.0-0.dtsi
	arch/powerpc/boot/dts/fsl/t4240si-post.dtsi
	arch/powerpc/boot/dts/fsl/t4240si-pre.dtsi
	arch/powerpc/boot/dts/p1025rdb_36b.dts
	arch/powerpc/boot/dts/t4240qds.dts
	arch/powerpc/configs/corenet64_smp_defconfig
	arch/powerpc/configs/mpc85xx_defconfig
	arch/powerpc/configs/mpc85xx_smp_defconfig
	arch/powerpc/include/asm/cputable.h
	arch/powerpc/include/asm/kvm_host.h
	arch/powerpc/include/asm/kvm_ppc.h
	arch/powerpc/include/asm/machdep.h
	arch/powerpc/include/uapi/asm/kvm.h
	arch/powerpc/kernel/cpu_setup_fsl_booke.S
	arch/powerpc/kernel/cputable.c
	arch/powerpc/kernel/idle.c
	arch/powerpc/kernel/pci-common.c
	arch/powerpc/kvm/Kconfig
	arch/powerpc/kvm/book3s.c
	arch/powerpc/kvm/booke.c
	arch/powerpc/kvm/e500.c
	arch/powerpc/kvm/e500_mmu.c
	arch/powerpc/kvm/e500_mmu_host.c
	arch/powerpc/kvm/e500mc.c
	arch/powerpc/kvm/emulate.c
	arch/powerpc/kvm/irq.h
	arch/powerpc/kvm/mpic.c
	arch/powerpc/kvm/powerpc.c
	arch/powerpc/mm/tlb_nohash.c
	arch/powerpc/platforms/85xx/Kconfig
	arch/powerpc/platforms/85xx/b4_qds.c
	arch/powerpc/platforms/85xx/t4240_qds.c
	arch/powerpc/platforms/pseries/smp.c
	arch/powerpc/sysdev/fsl_85xx_l2ctlr.c
	arch/powerpc/sysdev/fsl_msi.c
	arch/powerpc/sysdev/fsl_pci.c
	arch/powerpc/sysdev/fsl_pci.h
	arch/powerpc/sysdev/mpic.c
	arch/x86/kvm/Makefile
	arch/x86/kvm/x86.c
	drivers/Kconfig
	drivers/clk/Kconfig
	drivers/cpufreq/Makefile
	drivers/crypto/caam/caamalg.c
	drivers/crypto/caam/intern.h
	drivers/crypto/caam/jr.c
	drivers/crypto/caam/regs.h
	drivers/infiniband/ulp/ipoib/ipoib_ethtool.c
	drivers/iommu/Makefile
	drivers/iommu/amd_iommu.c
	drivers/iommu/exynos-iommu.c
	drivers/iommu/intel-iommu.c
	drivers/iommu/iommu.c
	drivers/iommu/msm_iommu.c
	drivers/iommu/omap-iommu.c
	drivers/iommu/tegra-gart.c
	drivers/iommu/tegra-smmu.c
	drivers/misc/Makefile
	drivers/mmc/card/block.c
	drivers/mmc/card/queue.c
	drivers/mmc/core/core.c
	drivers/mtd/nand/fsl_ifc_nand.c
	drivers/net/ethernet/3com/3c501.c
	drivers/net/ethernet/8390/3c503.c
	drivers/net/ethernet/dec/ewrk3.c
	drivers/net/ethernet/freescale/fec.c
	drivers/net/ethernet/freescale/gianfar.c
	drivers/net/ethernet/freescale/gianfar.h
	drivers/net/ethernet/i825xx/3c505.c
	drivers/net/ethernet/i825xx/3c507.c
	drivers/rtc/rtc-ds3232.c
	drivers/s390/net/qeth_core_main.c
	drivers/staging/Kconfig
	drivers/staging/Makefile
	drivers/staging/ccg/u_ether.c
	drivers/usb/gadget/fsl_udc_core.c
	drivers/usb/otg/fsl_otg.c
	drivers/vfio/vfio.c
	drivers/watchdog/Kconfig
	include/linux/iommu.h
	include/linux/kvm_host.h
	include/linux/mmc/sdhci.h
	include/linux/msi.h
	include/linux/netdev_features.h
	include/linux/pci.h
	include/linux/skbuff.h
	include/net/ip6_route.h
	include/net/sch_generic.h
	include/net/xfrm.h
	include/uapi/linux/kvm.h
	net/core/netpoll.c
	virt/kvm/irqchip.c
	virt/kvm/kvm_main.c

1 files changed, 113 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 1fd6e7b..52add6f 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -19,6 +19,7 @@
 #include <linux/init.h>
 #include <linux/capability.h>
 #include <linux/delay.h>
+#include <linux/cpu.h>
 #include <linux/smp.h>
 #include <linux/completion.h>
 #include <linux/cpumask.h>
@@ -807,6 +808,95 @@ static void rtas_percpu_suspend_me(void *info)
 	__rtas_suspend_cpu((struct rtas_suspend_me_data *)info, 1);
 }
 
+enum rtas_cpu_state {
+	DOWN,
+	UP,
+};
+
+#ifndef CONFIG_SMP
+static int rtas_cpu_state_change_mask(enum rtas_cpu_state state,
+				cpumask_var_t cpus)
+{
+	if (!cpumask_empty(cpus)) {
+		cpumask_clear(cpus);
+		return -EINVAL;
+	} else
+		return 0;
+}
+#else
+/* On return cpumask will be altered to indicate CPUs changed.
+ * CPUs with states changed will be set in the mask,
+ * CPUs with status unchanged will be unset in the mask. */
+static int rtas_cpu_state_change_mask(enum rtas_cpu_state state,
+				cpumask_var_t cpus)
+{
+	int cpu;
+	int cpuret = 0;
+	int ret = 0;
+
+	if (cpumask_empty(cpus))
+		return 0;
+
+	for_each_cpu(cpu, cpus) {
+		switch (state) {
+		case DOWN:
+			cpuret = cpu_down(cpu);
+			break;
+		case UP:
+			cpuret = cpu_up(cpu);
+			break;
+		}
+		if (cpuret) {
+			pr_debug("%s: cpu_%s for cpu#%d returned %d.\n",
+					__func__,
+					((state == UP) ? "up" : "down"),
+					cpu, cpuret);
+			if (!ret)
+				ret = cpuret;
+			if (state == UP) {
+				/* clear bits for unchanged cpus, return */
+				cpumask_shift_right(cpus, cpus, cpu);
+				cpumask_shift_left(cpus, cpus, cpu);
+				break;
+			} else {
+				/* clear bit for unchanged cpu, continue */
+				cpumask_clear_cpu(cpu, cpus);
+			}
+		}
+	}
+
+	return ret;
+}
+#endif
+
+int rtas_online_cpus_mask(cpumask_var_t cpus)
+{
+	int ret;
+
+	ret = rtas_cpu_state_change_mask(UP, cpus);
+
+	if (ret) {
+		cpumask_var_t tmp_mask;
+
+		if (!alloc_cpumask_var(&tmp_mask, GFP_TEMPORARY))
+			return ret;
+
+		/* Use tmp_mask to preserve cpus mask from first failure */
+		cpumask_copy(tmp_mask, cpus);
+		rtas_offline_cpus_mask(tmp_mask);
+		free_cpumask_var(tmp_mask);
+	}
+
+	return ret;
+}
+EXPORT_SYMBOL(rtas_online_cpus_mask);
+
+int rtas_offline_cpus_mask(cpumask_var_t cpus)
+{
+	return rtas_cpu_state_change_mask(DOWN, cpus);
+}
+EXPORT_SYMBOL(rtas_offline_cpus_mask);
+
 int rtas_ibm_suspend_me(struct rtas_args *args)
 {
 	long state;
@@ -814,6 +904,8 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
 	unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
 	struct rtas_suspend_me_data data;
 	DECLARE_COMPLETION_ONSTACK(done);
+	cpumask_var_t offline_mask;
+	int cpuret;
 
 	if (!rtas_service_present("ibm,suspend-me"))
 		return -ENOSYS;
@@ -837,11 +929,24 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
 		return 0;
 	}
 
+	if (!alloc_cpumask_var(&offline_mask, GFP_TEMPORARY))
+		return -ENOMEM;
+
 	atomic_set(&data.working, 0);
 	atomic_set(&data.done, 0);
 	atomic_set(&data.error, 0);
 	data.token = rtas_token("ibm,suspend-me");
 	data.complete = &done;
+
+	/* All present CPUs must be online */
+	cpumask_andnot(offline_mask, cpu_present_mask, cpu_online_mask);
+	cpuret = rtas_online_cpus_mask(offline_mask);
+	if (cpuret) {
+		pr_err("%s: Could not bring present CPUs online.\n", __func__);
+		atomic_set(&data.error, cpuret);
+		goto out;
+	}
+
 	stop_topology_update();
 
 	/* Call function on all CPUs.  One of us will make the
@@ -857,6 +962,14 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
 
 	start_topology_update();
 
+	/* Take down CPUs not online prior to suspend */
+	cpuret = rtas_offline_cpus_mask(offline_mask);
+	if (cpuret)
+		pr_warn("%s: Could not restore CPUs to offline state.\n",
+				__func__);
+
+out:
+	free_cpumask_var(offline_mask);
 	return atomic_read(&data.error);
 }
 #else /* CONFIG_PPC_PSERIES */