Merge branch 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/virt/kvm/kvm

* 'kvm-updates/2.6.29' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: VMX: Flush volatile msrs before emulating rdmsr
  KVM: Fix assigned devices circular locking dependency
  KVM: x86: fix LAPIC pending count calculation
  KVM: Fix INTx for device assignment
  KVM: MMU: Map device MMIO as UC in EPT
  KVM: x86: disable kvmclock on non constant TSC hosts
  KVM: PIT: fix i8254 pending count read
  KVM: Fix racy in kvm_free_assigned_irq
  KVM: Add kvm_arch_sync_events to sync with asynchronize events
  KVM: mmu_notifiers release method
  KVM: Avoid using CONFIG_ in userspace visible headers
  KVM: ia64: fix fp fault/trap handler

diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c
index f238370c907d9f4c86ecbed9da7332ccf08908c3..8d0097f10208dad922760de0a72756a55272c722 100644 (file)
--- a/arch/alpha/kernel/process.c
+++ b/arch/alpha/kernel/process.c
@@ -93,8 +93,8 @@ common_shutdown_1(void *generic_ptr)
        if (cpuid != boot_cpuid) {
                flags |= 0x00040000UL; /* "remain halted" */
                *pflags = flags;
-               cpu_clear(cpuid, cpu_present_map);
-               cpu_clear(cpuid, cpu_possible_map);
+               set_cpu_present(cpuid, false);
+               set_cpu_possible(cpuid, false);
                halt();
        }
 #endif
@@ -120,8 +120,8 @@ common_shutdown_1(void *generic_ptr)
 
 #ifdef CONFIG_SMP
        /* Wait for the secondaries to halt. */
-       cpu_clear(boot_cpuid, cpu_present_map);
-       cpu_clear(boot_cpuid, cpu_possible_map);
+       set_cpu_present(boot_cpuid, false);
+       set_cpu_possible(boot_cpuid, false);
        while (cpus_weight(cpu_present_map))
                barrier();
 #endif

diff --git a/arch/alpha/kernel/smp.c b/arch/alpha/kernel/smp.c
index 00f1dc3dfd5f215e5e1068c89c2376afed7f7830..b1fe5674c3a1fb286c3af38559a52009ce054478 100644 (file)
--- a/arch/alpha/kernel/smp.c
+++ b/arch/alpha/kernel/smp.c
@@ -120,12 +120,12 @@ void __cpuinit
 smp_callin(void)
 {
        int cpuid = hard_smp_processor_id();
-       cpumask_t mask = cpu_online_map;
 
-       if (cpu_test_and_set(cpuid, mask)) {
+       if (cpu_online(cpuid)) {
                printk("??, cpu 0x%x already present??\n", cpuid);
                BUG();
        }
+       set_cpu_online(cpuid, true);
 
        /* Turn on machine checks.  */
        wrmces(7);
@@ -436,8 +436,8 @@ setup_smp(void)
                                ((char *)cpubase + i*hwrpb->processor_size);
                        if ((cpu->flags & 0x1cc) == 0x1cc) {
                                smp_num_probed++;
-                               cpu_set(i, cpu_possible_map);
-                               cpu_set(i, cpu_present_map);
+                               set_cpu_possible(i, true);
+                               set_cpu_present(i, true);
                                cpu->pal_revision = boot_cpu_palrev;
                        }
 
@@ -470,8 +470,8 @@ smp_prepare_cpus(unsigned int max_cpus)
 
        /* Nothing to do on a UP box, or when told not to.  */
        if (smp_num_probed == 1 || max_cpus == 0) {
-               cpu_possible_map = cpumask_of_cpu(boot_cpuid);
-               cpu_present_map = cpumask_of_cpu(boot_cpuid);
+               init_cpu_possible(cpumask_of(boot_cpuid));
+               init_cpu_present(cpumask_of(boot_cpuid));
                printk(KERN_INFO "SMP mode deactivated.\n");
                return;
        }

diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index fb039cd345d861ce97e8b7585dc4f399483f8a13..6428aa17b40e794683b5359ed0589dc3dbfbf592 100644 (file)
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1157,8 +1157,7 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
        data->cpu = pol->cpu;
        data->currpstate = HW_PSTATE_INVALID;
 
-       rc = powernow_k8_cpu_init_acpi(data);
-       if (rc) {
+       if (powernow_k8_cpu_init_acpi(data)) {
                /*
                 * Use the PSB BIOS structure. This is only availabe on
                 * an UP version, and is deprecated by AMD.
@@ -1176,17 +1175,20 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
                               "ACPI maintainers and complain to your BIOS "
                               "vendor.\n");
 #endif
-                       goto err_out;
+                       kfree(data);
+                       return -ENODEV;
                }
                if (pol->cpu != 0) {
                        printk(KERN_ERR FW_BUG PFX "No ACPI _PSS objects for "
                               "CPU other than CPU0. Complain to your BIOS "
                               "vendor.\n");
-                       goto err_out;
+                       kfree(data);
+                       return -ENODEV;
                }
                rc = find_psb_table(data);
                if (rc) {
-                       goto err_out;
+                       kfree(data);
+                       return -ENODEV;
                }
                /* Take a crude guess here.
                 * That guess was in microseconds, so multiply with 1000 */

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index f4b7c79023ffe7d05589dd93526531ea3dc3708f..fa9e41626bfcd2be15a6f3c1cb218f0225f3c882 100644 (file)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -61,6 +61,8 @@
 /* global iommu list, set NULL for ignored DMAR units */
 static struct intel_iommu **g_iommus;
 
+static int rwbf_quirk = 0;
+
 /*
  * 0: Present
  * 1-11: Reserved
@@ -785,7 +787,7 @@ static void iommu_flush_write_buffer(struct intel_iommu *iommu)
        u32 val;
        unsigned long flag;
 
-       if (!cap_rwbf(iommu->cap))
+       if (!rwbf_quirk && !cap_rwbf(iommu->cap))
                return;
        val = iommu->gcmd | DMA_GCMD_WBF;
 
@@ -3137,3 +3139,13 @@ static struct iommu_ops intel_iommu_ops = {
        .unmap          = intel_iommu_unmap_range,
        .iova_to_phys   = intel_iommu_iova_to_phys,
 };
+
+static void __devinit quirk_iommu_rwbf(struct pci_dev *dev)
+{
+       /* Mobile 4 Series Chipset neglects to set RWBF capability,
+          but needs it */
+       printk(KERN_INFO "DMAR: Forcing write-buffer flush capability\n");
+       rwbf_quirk = 1;
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_rwbf);

diff --git a/fs/namespace.c b/fs/namespace.c
index 228d8c4bfd18a1925fd57ac3880e2e47031470d2..06f8e63f6cb1dc929e0ad9c0627320066db57cb1 100644 (file)
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -614,9 +614,11 @@ static inline void __mntput(struct vfsmount *mnt)
         */
        for_each_possible_cpu(cpu) {
                struct mnt_writer *cpu_writer = &per_cpu(mnt_writers, cpu);
-               if (cpu_writer->mnt != mnt)
-                       continue;
                spin_lock(&cpu_writer->lock);
+               if (cpu_writer->mnt != mnt) {
+                       spin_unlock(&cpu_writer->lock);
+                       continue;
+               }
                atomic_add(cpu_writer->count, &mnt->__mnt_writers);
                cpu_writer->count = 0;
                /*