KVM Archive on lore.kernel.org
 help / color / Atom feed
From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Xu <peterx@redhat.com>,
	kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Christophe de Dinechin <dinechin@redhat.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Sean Christopherson <sean.j.christopherson@intel.com>,
	Yan Zhao <yan.y.zhao@intel.com>,
	Alex Williamson <alex.williamson@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	Kevin Kevin <kevin.tian@intel.com>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	"Dr . David Alan Gilbert" <dgilbert@redhat.com>
Subject: Re: [PATCH v3 00/21] KVM: Dirty ring interface
Date: Sun, 19 Jan 2020 10:11:31 +0100
Message-ID: <2dbda1b2-888e-dcb8-50ec-b8400e83225c@redhat.com> (raw)
In-Reply-To: <20200109145729.32898-1-peterx@redhat.com>

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@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
> 

Queued patches 3-6, 8-9, 11; thanks!

Paolo


      parent reply index

Thread overview: 82+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-09 14:57 Peter Xu
2020-01-09 14:57 ` [PATCH v3 01/21] vfio: introduce vfio_iova_rw to read/write a range of IOVAs Peter Xu
2020-01-09 14:57 ` [PATCH v3 02/21] drm/i915/gvt: subsitute kvm_read/write_guest with vfio_iova_rw Peter Xu
2020-01-09 14:57 ` [PATCH v3 03/21] KVM: Remove kvm_read_guest_atomic() Peter Xu
2020-01-09 14:57 ` [PATCH v3 04/21] KVM: Add build-time error check on kvm_run size Peter Xu
2020-01-09 14:57 ` [PATCH v3 05/21] KVM: X86: Change parameter for fast_page_fault tracepoint Peter Xu
2020-01-09 14:57 ` [PATCH v3 06/21] KVM: X86: Don't take srcu lock in init_rmode_identity_map() Peter Xu
2020-01-09 14:57 ` [PATCH v3 07/21] KVM: Cache as_id in kvm_memory_slot Peter Xu
2020-01-09 14:57 ` [PATCH v3 08/21] KVM: X86: Drop x86_set_memory_region() Peter Xu
2020-01-09 14:57 ` [PATCH v3 09/21] KVM: X86: Don't track dirty for KVM_SET_[TSS_ADDR|IDENTITY_MAP_ADDR] Peter Xu
2020-01-19  9:01   ` Paolo Bonzini
2020-01-20  6:45     ` Peter Xu
2020-01-21 15:56   ` Sean Christopherson
2020-01-21 16:14     ` Paolo Bonzini
2020-01-28  5:50     ` Peter Xu
2020-01-28 18:24       ` Sean Christopherson
2020-01-31 15:08         ` Peter Xu
2020-01-31 19:33           ` Sean Christopherson
2020-01-31 20:28             ` Peter Xu
2020-01-31 20:36               ` Sean Christopherson
2020-01-31 20:55                 ` Peter Xu
2020-01-31 21:29                   ` Sean Christopherson
2020-01-31 22:16                     ` Peter Xu
2020-01-31 22:20                       ` Sean Christopherson
2020-01-09 14:57 ` [PATCH v3 10/21] KVM: Pass in kvm pointer into mark_page_dirty_in_slot() Peter Xu
2020-01-09 14:57 ` [PATCH v3 11/21] KVM: Move running VCPU from ARM to common code Peter Xu
2020-01-09 14:57 ` [PATCH v3 12/21] KVM: X86: Implement ring-based dirty memory tracking Peter Xu
2020-01-09 16:29   ` Michael S. Tsirkin
2020-01-09 16:56     ` Alex Williamson
2020-01-09 19:21       ` Peter Xu
2020-01-09 19:36         ` Michael S. Tsirkin
2020-01-09 19:15     ` Peter Xu
2020-01-09 19:35       ` Michael S. Tsirkin
2020-01-09 20:19         ` Peter Xu
2020-01-09 22:18           ` Michael S. Tsirkin
2020-01-10 15:29             ` Peter Xu
2020-01-12  6:24               ` Michael S. Tsirkin
2020-01-14 20:01         ` Peter Xu
2020-01-15  6:50           ` Michael S. Tsirkin
2020-01-15 15:20             ` Peter Xu
2020-01-19  9:09       ` Paolo Bonzini
2020-01-19 10:12         ` Michael S. Tsirkin
2020-01-20  7:29           ` Peter Xu
2020-01-20  7:47             ` Michael S. Tsirkin
2020-01-21  8:29               ` Peter Xu
2020-01-21 10:25                 ` Paolo Bonzini
2020-01-21 10:24             ` Paolo Bonzini
2020-01-11  4:49   ` kbuild test robot
2020-01-11 23:19   ` kbuild test robot
2020-01-15  6:47   ` Michael S. Tsirkin
2020-01-15 15:27     ` Peter Xu
2020-01-16  8:38   ` Michael S. Tsirkin
2020-01-16 16:27     ` Peter Xu
2020-01-17  9:50       ` Michael S. Tsirkin
2020-01-20  6:48         ` Peter Xu
2020-01-09 14:57 ` [PATCH v3 13/21] KVM: Make dirty ring exclusive to dirty bitmap log Peter Xu
2020-01-09 14:57 ` [PATCH v3 14/21] KVM: Don't allocate dirty bitmap if dirty ring is enabled Peter Xu
2020-01-09 16:41   ` Peter Xu
2020-01-09 14:57 ` [PATCH v3 15/21] KVM: selftests: Always clear dirty bitmap after iteration Peter Xu
2020-01-09 14:57 ` [PATCH v3 16/21] KVM: selftests: Sync uapi/linux/kvm.h to tools/ Peter Xu
2020-01-09 14:57 ` [PATCH v3 17/21] KVM: selftests: Use a single binary for dirty/clear log test Peter Xu
2020-01-09 14:57 ` [PATCH v3 18/21] KVM: selftests: Introduce after_vcpu_run hook for dirty " Peter Xu
2020-01-09 14:57 ` [PATCH v3 19/21] KVM: selftests: Add dirty ring buffer test Peter Xu
2020-01-09 14:57 ` [PATCH v3 20/21] KVM: selftests: Let dirty_log_test async for dirty ring test Peter Xu
2020-01-09 14:57 ` [PATCH v3 21/21] KVM: selftests: Add "-c" parameter to dirty log test Peter Xu
2020-01-09 15:59 ` [PATCH v3 00/21] KVM: Dirty ring interface Michael S. Tsirkin
2020-01-09 16:17   ` Peter Xu
2020-01-09 16:40     ` Michael S. Tsirkin
2020-01-09 17:08       ` Peter Xu
2020-01-09 19:08         ` Michael S. Tsirkin
2020-01-09 19:39           ` Peter Xu
2020-01-09 20:42             ` Paolo Bonzini
2020-01-09 22:28             ` Michael S. Tsirkin
2020-01-10 15:10               ` Peter Xu
2020-01-09 16:47 ` Alex Williamson
2020-01-09 17:58   ` Peter Xu
2020-01-09 19:13     ` Michael S. Tsirkin
2020-01-09 19:23       ` Peter Xu
2020-01-09 19:37         ` Michael S. Tsirkin
2020-01-09 20:51       ` Paolo Bonzini
2020-01-09 22:21         ` Michael S. Tsirkin
2020-01-19  9:11 ` Paolo Bonzini [this message]

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=2dbda1b2-888e-dcb8-50ec-b8400e83225c@redhat.com \
    --to=pbonzini@redhat.com \
    --cc=alex.williamson@redhat.com \
    --cc=dgilbert@redhat.com \
    --cc=dinechin@redhat.com \
    --cc=jasowang@redhat.com \
    --cc=kevin.tian@intel.com \
    --cc=kvm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mst@redhat.com \
    --cc=peterx@redhat.com \
    --cc=sean.j.christopherson@intel.com \
    --cc=vkuznets@redhat.com \
    --cc=yan.y.zhao@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

KVM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/kvm/0 kvm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 kvm kvm/ https://lore.kernel.org/kvm \
		kvm@vger.kernel.org
	public-inbox-index kvm

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.kvm


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git