kernel/linux.git/include/linux/kvm_host.h, branch v3.13-rc5

Merge branch 'kvm-ppc-queue' of git://github.com/agraf/linux-2.6 into queue

2013-11-04T08:20:57+00:00

Conflicts: arch/powerpc/include/asm/processor.h

kvm_host: typo fix

2013-10-31T21:14:23+00:00

fix up typo in comment. Signed-off-by: Michael S. Tsirkin Signed-off-by: Paolo Bonzini

kvm: Create non-coherent DMA registeration

2013-10-30T18:02:23+00:00

We currently use some ad-hoc arch variables tied to legacy KVM device assignment to manage emulation of instructions that depend on whether non-coherent DMA is present. Create an interface for this, adapting legacy KVM device assignment and adding VFIO via the KVM-VFIO device. For now we assume that non-coherent DMA is possible any time we have a VFIO group. Eventually an interface can be developed as part of the VFIO external user interface to query the coherency of a group. Signed-off-by: Alex Williamson Signed-off-by: Paolo Bonzini

kvm/x86: Convert iommu_flags to iommu_noncoherent

2013-10-30T18:02:13+00:00

Default to operating in coherent mode. This simplifies the logic when we switch to a model of registering and unregistering noncoherent I/O with KVM. Signed-off-by: Alex Williamson Signed-off-by: Paolo Bonzini

kvm: Add VFIO device

2013-10-30T18:02:03+00:00

So far we've succeeded at making KVM and VFIO mostly unaware of each other, but areas are cropping up where a connection beyond eventfds and irqfds needs to be made. This patch introduces a KVM-VFIO device that is meant to be a gateway for such interaction. The user creates the device and can add and remove VFIO groups to it via file descriptors. When a group is added, KVM verifies the group is valid and gets a reference to it via the VFIO external user interface. Signed-off-by: Alex Williamson Signed-off-by: Paolo Bonzini

kvm: Add struct kvm arg to memslot APIs

2013-10-17T13:49:23+00:00

We will use that in the later patch to find the kvm ops handler Signed-off-by: Aneesh Kumar K.V Signed-off-by: Alexander Graf

KVM: Drop FOLL_GET in GUP when doing async page fault

2013-10-15T10:43:37+00:00

Page pinning is not mandatory in kvm async page fault processing since after async page fault event is delivered to a guest it accesses page once again and does its own GUP. Drop the FOLL_GET flag in GUP in async_pf code, and do some simplifying in check/clear processing. Suggested-by: Gleb Natapov Signed-off-by: Gu zheng Signed-off-by: chai wen Signed-off-by: Gleb Natapov

KVM: Move gfn_to_index to x86 specific code

2013-10-14T07:11:44+00:00

The gfn_to_index function relies on huge page defines which either may not make sense on systems that don't support huge pages or are defined in an unconvenient way for other architectures. Since this is x86-specific, move the function to arch/x86/include/asm/kvm_host.h. Signed-off-by: Christoffer Dall Signed-off-by: Gleb Natapov

KVM: Convert kvm_lock back to non-raw spinlock

2013-09-30T07:21:51+00:00

In commit e935b8372cf8 ("KVM: Convert kvm_lock to raw_spinlock"), the kvm_lock was made a raw lock. However, the kvm mmu_shrink() function tries to grab the (non-raw) mmu_lock within the scope of the raw locked kvm_lock being held. This leads to the following: BUG: sleeping function called from invalid context at kernel/rtmutex.c:659 in_atomic(): 1, irqs_disabled(): 0, pid: 55, name: kswapd0 Preemption disabled at:[] mmu_shrink+0x5c/0x1b0 [kvm] Pid: 55, comm: kswapd0 Not tainted 3.4.34_preempt-rt Call Trace: [] __might_sleep+0xfd/0x160 [] rt_spin_lock+0x24/0x50 [] mmu_shrink+0xec/0x1b0 [kvm] [] shrink_slab+0x17d/0x3a0 [] ? mem_cgroup_iter+0x130/0x260 [] balance_pgdat+0x54a/0x730 [] ? set_pgdat_percpu_threshold+0xa7/0xd0 [] kswapd+0x18f/0x490 [] ? get_parent_ip+0x11/0x50 [] ? __init_waitqueue_head+0x50/0x50 [] ? balance_pgdat+0x730/0x730 [] kthread+0xdb/0xe0 [] ? finish_task_switch+0x52/0x100 [] kernel_thread_helper+0x4/0x10 [] ? __init_kthread_worker+0x After the previous patch, kvm_lock need not be a raw spinlock anymore, so change it back. Reported-by: Paul Gortmaker Cc: kvm@vger.kernel.org Cc: gleb@redhat.com Cc: jan.kiszka@siemens.com Reviewed-by: Gleb Natapov Signed-off-by: Paolo Bonzini

kvm: remove .done from struct kvm_async_pf

2013-09-24T17:12:12+00:00

'.done' is used to mark the completion of 'async_pf_execute()', but 'cancel_work_sync()' returns true when the work was canceled, so we use it instead. Signed-off-by: Radim Krčmář Reviewed-by: Paolo Bonzini Reviewed-by: Gleb Natapov Signed-off-by: Paolo Bonzini