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Subject[PATCH v3 00/21] KVM: Dirty ring interface
Date
Branch is here: https://github.com/xzpeter/linux/tree/kvm-dirty-ring
(based on kvm/queue)

Please refer to either the previous cover letters, or documentation
update in patch 12 for the big picture. Previous posts:

V1: https://lore.kernel.org/kvm/20191129213505.18472-1-peterx@redhat.com
V2: https://lore.kernel.org/kvm/20191221014938.58831-1-peterx@redhat.com

The major change in V3 is that we dropped the whole waitqueue and the
global lock. With that, we have clean per-vcpu ring and no default
ring any more. The two kvmgt refactoring patches were also included
to show the dependency of the works.

Patchset layout:

Patch 1-2: Picked up from kvmgt refactoring
Patch 3-6: Small patches that are not directly related,
(So can be acked/nacked/picked as standalone)
Patch 7-11: Prepares for the dirty ring interface
Patch 12: Major implementation
Patch 13-14: Quick follow-ups for patch 8
Patch 15-21: Test cases

V3 changelog:

- fail userspace writable maps on dirty ring ranges [Jason]
- commit message fixups [Paolo]
- change __x86_set_memory_region to return hva [Paolo]
- cacheline align for indices [Paolo, Jason]
- drop waitqueue, global lock, etc., include kvmgt rework patchset
- take lock for __x86_set_memory_region() (otherwise it triggers a
lockdep in latest kvm/queue) [Paolo]
- check KVM_DIRTY_LOG_PAGE_OFFSET in kvm_vm_ioctl_enable_dirty_log_ring
- one more patch to drop x86_set_memory_region [Paolo]
- one more patch to remove extra srcu usage in init_rmode_identity_map()
- add some r-bs for Paolo

Please review, thanks.

Paolo Bonzini (1):
KVM: Move running VCPU from ARM to common code

Peter Xu (18):
KVM: Remove kvm_read_guest_atomic()
KVM: Add build-time error check on kvm_run size
KVM: X86: Change parameter for fast_page_fault tracepoint
KVM: X86: Don't take srcu lock in init_rmode_identity_map()
KVM: Cache as_id in kvm_memory_slot
KVM: X86: Drop x86_set_memory_region()
KVM: X86: Don't track dirty for KVM_SET_[TSS_ADDR|IDENTITY_MAP_ADDR]
KVM: Pass in kvm pointer into mark_page_dirty_in_slot()
KVM: X86: Implement ring-based dirty memory tracking
KVM: Make dirty ring exclusive to dirty bitmap log
KVM: Don't allocate dirty bitmap if dirty ring is enabled
KVM: selftests: Always clear dirty bitmap after iteration
KVM: selftests: Sync uapi/linux/kvm.h to tools/
KVM: selftests: Use a single binary for dirty/clear log test
KVM: selftests: Introduce after_vcpu_run hook for dirty log test
KVM: selftests: Add dirty ring buffer test
KVM: selftests: Let dirty_log_test async for dirty ring test
KVM: selftests: Add "-c" parameter to dirty log test

Yan Zhao (2):
vfio: introduce vfio_iova_rw to read/write a range of IOVAs
drm/i915/gvt: subsitute kvm_read/write_guest with vfio_iova_rw

Documentation/virt/kvm/api.txt | 96 ++++
arch/arm/include/asm/kvm_host.h | 2 -
arch/arm64/include/asm/kvm_host.h | 2 -
arch/x86/include/asm/kvm_host.h | 7 +-
arch/x86/include/uapi/asm/kvm.h | 1 +
arch/x86/kvm/Makefile | 3 +-
arch/x86/kvm/mmu/mmu.c | 6 +
arch/x86/kvm/mmutrace.h | 9 +-
arch/x86/kvm/svm.c | 3 +-
arch/x86/kvm/vmx/vmx.c | 86 ++--
arch/x86/kvm/x86.c | 43 +-
drivers/gpu/drm/i915/gvt/kvmgt.c | 25 +-
drivers/vfio/vfio.c | 45 ++
drivers/vfio/vfio_iommu_type1.c | 81 ++++
include/linux/kvm_dirty_ring.h | 55 +++
include/linux/kvm_host.h | 37 +-
include/linux/vfio.h | 5 +
include/trace/events/kvm.h | 78 ++++
include/uapi/linux/kvm.h | 33 ++
tools/include/uapi/linux/kvm.h | 38 ++
tools/testing/selftests/kvm/Makefile | 2 -
.../selftests/kvm/clear_dirty_log_test.c | 2 -
tools/testing/selftests/kvm/dirty_log_test.c | 420 ++++++++++++++++--
.../testing/selftests/kvm/include/kvm_util.h | 4 +
tools/testing/selftests/kvm/lib/kvm_util.c | 72 +++
.../selftests/kvm/lib/kvm_util_internal.h | 3 +
virt/kvm/arm/arch_timer.c | 2 +-
virt/kvm/arm/arm.c | 29 --
virt/kvm/arm/perf.c | 6 +-
virt/kvm/arm/vgic/vgic-mmio.c | 15 +-
virt/kvm/dirty_ring.c | 162 +++++++
virt/kvm/kvm_main.c | 215 +++++++--
32 files changed, 1379 insertions(+), 208 deletions(-)
create mode 100644 include/linux/kvm_dirty_ring.h
delete mode 100644 tools/testing/selftests/kvm/clear_dirty_log_test.c
create mode 100644 virt/kvm/dirty_ring.c

--
2.24.1

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