On 09/01/20 15:57, Peter Xu wrote: > 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@xxxxxxxxxx > V2: https://lore.kernel.org/kvm/20191221014938.58831-1-peterx@xxxxxxxxxx > > 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 > Queued patches 3-6, 8-9, 11; thanks! Paolo
