diff options
author | Tejun Heo <tj@kernel.org> | 2014-09-24 13:00:21 -0400 |
---|---|---|
committer | Tejun Heo <tj@kernel.org> | 2014-09-24 13:00:21 -0400 |
commit | d06efebf0c37d438fcf07057be00dd40fcfce08d (patch) | |
tree | 31a0786d132aadf4cbb9725f3f444ef6e1052128 /virt/kvm | |
parent | bb2e226b3bef596dd56be97df655d857b4603923 (diff) | |
parent | 0a30288da1aec914e158c2d7a3482a85f632750f (diff) | |
download | op-kernel-dev-d06efebf0c37d438fcf07057be00dd40fcfce08d.zip op-kernel-dev-d06efebf0c37d438fcf07057be00dd40fcfce08d.tar.gz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block into for-3.18
This is to receive 0a30288da1ae ("blk-mq, percpu_ref: implement a
kludge for SCSI blk-mq stall during probe") which implements
__percpu_ref_kill_expedited() to work around SCSI blk-mq stall. The
commit reverted and patches to implement proper fix will be added.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'virt/kvm')
-rw-r--r-- | virt/kvm/arm/vgic-v2.c | 2 | ||||
-rw-r--r-- | virt/kvm/assigned-dev.c | 4 | ||||
-rw-r--r-- | virt/kvm/iommu.c | 19 | ||||
-rw-r--r-- | virt/kvm/kvm_main.c | 4 |
4 files changed, 16 insertions, 13 deletions
diff --git a/virt/kvm/arm/vgic-v2.c b/virt/kvm/arm/vgic-v2.c index 01124ef..416baed 100644 --- a/virt/kvm/arm/vgic-v2.c +++ b/virt/kvm/arm/vgic-v2.c @@ -71,7 +71,7 @@ static void vgic_v2_sync_lr_elrsr(struct kvm_vcpu *vcpu, int lr, struct vgic_lr lr_desc) { if (!(lr_desc.state & LR_STATE_MASK)) - set_bit(lr, (unsigned long *)vcpu->arch.vgic_cpu.vgic_v2.vgic_elrsr); + __set_bit(lr, (unsigned long *)vcpu->arch.vgic_cpu.vgic_v2.vgic_elrsr); } static u64 vgic_v2_get_elrsr(const struct kvm_vcpu *vcpu) diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c index bf06577..5819a27 100644 --- a/virt/kvm/assigned-dev.c +++ b/virt/kvm/assigned-dev.c @@ -526,8 +526,10 @@ static int assign_guest_irq(struct kvm *kvm, dev->irq_requested_type |= guest_irq_type; if (dev->ack_notifier.gsi != -1) kvm_register_irq_ack_notifier(kvm, &dev->ack_notifier); - } else + } else { kvm_free_irq_source_id(kvm, dev->irq_source_id); + dev->irq_source_id = -1; + } return r; } diff --git a/virt/kvm/iommu.c b/virt/kvm/iommu.c index 0df7d4b..714b949 100644 --- a/virt/kvm/iommu.c +++ b/virt/kvm/iommu.c @@ -61,6 +61,14 @@ static pfn_t kvm_pin_pages(struct kvm_memory_slot *slot, gfn_t gfn, return pfn; } +static void kvm_unpin_pages(struct kvm *kvm, pfn_t pfn, unsigned long npages) +{ + unsigned long i; + + for (i = 0; i < npages; ++i) + kvm_release_pfn_clean(pfn + i); +} + int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) { gfn_t gfn, end_gfn; @@ -123,6 +131,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) if (r) { printk(KERN_ERR "kvm_iommu_map_address:" "iommu failed to map pfn=%llx\n", pfn); + kvm_unpin_pages(kvm, pfn, page_size); goto unmap_pages; } @@ -134,7 +143,7 @@ int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) return 0; unmap_pages: - kvm_iommu_put_pages(kvm, slot->base_gfn, gfn); + kvm_iommu_put_pages(kvm, slot->base_gfn, gfn - slot->base_gfn); return r; } @@ -266,14 +275,6 @@ out_unlock: return r; } -static void kvm_unpin_pages(struct kvm *kvm, pfn_t pfn, unsigned long npages) -{ - unsigned long i; - - for (i = 0; i < npages; ++i) - kvm_release_pfn_clean(pfn + i); -} - static void kvm_iommu_put_pages(struct kvm *kvm, gfn_t base_gfn, unsigned long npages) { diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 33712fb..95519bc 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -110,7 +110,7 @@ static bool largepages_enabled = true; bool kvm_is_mmio_pfn(pfn_t pfn) { if (pfn_valid(pfn)) - return PageReserved(pfn_to_page(pfn)); + return !is_zero_pfn(pfn) && PageReserved(pfn_to_page(pfn)); return true; } @@ -1725,7 +1725,7 @@ int kvm_vcpu_yield_to(struct kvm_vcpu *target) rcu_read_lock(); pid = rcu_dereference(target->pid); if (pid) - task = get_pid_task(target->pid, PIDTYPE_PID); + task = get_pid_task(pid, PIDTYPE_PID); rcu_read_unlock(); if (!task) return ret; |