is supported else migration is
blocked.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/Makefile.objs | 2 +-
hw/vfio/migration.c | 138 ++
hw/vfio/trace-events | 3 +
include/hw/vfio/vfio-common.h | 9 +++
4 files
Hook vfio_get_object callback for PCI devices.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Suggested-by: Cornelia Huck
Reviewed-by: Cornelia Huck
---
hw/vfio/pci.c | 8
include/hw/vfio/vfio-common.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/hw/vfio
Kernel header patches are being reviewed along with kernel side changes.
This patch is only for place holder.
This patch include all changes in vfio.h from above patch set
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
linux-headers/linux/vfio.h | 318
These functions save and restore PCI device specific data - config
space of PCI device.
Tested save and restore with MSI and MSIX type.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/pci.c | 163 ++
include/hw/vfio/vfio
This function will be used for migration region.
Migration region is mmaped when migration starts and will be unmapped when
migration is complete.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Cornelia Huck
---
hw/vfio/common.c | 32
on.
- Moved PCI device functions to pci file.
- Added iteration to get dirty page bitmap until bitmap for all requested pages
are copied.
Thanks,
Kirti
Kirti Wankhede (18):
vfio: KABI for migration interface - Kernel header placeholder
vfio: Add function to unmap VFIO regi
for ioctls used to get
dirty bitmap.
Signed-off-by: Kirti Wankhede
Reviewed-by: Cornelia Huck
---
drivers/vfio/vfio_iommu_type1.c | 23 ++-
include/uapi/linux/vfio.h | 23 +++
2 files changed, 45 insertions(+), 1 deletion(-)
diff --git a/drivers
VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Cornelia Huck
---
drivers/vfio/vfio_iommu_type1.c | 61 +
include/uapi/linux/vfio.h | 11
2 files changed, 61 insertions(+), 11 deletions(-)
diff --git
all of the vfio_groups for each
vfio_domain in the domain_list dirty page scope is limited to pinned
pages. This flag is updated on first pinned pages request for that IOMMU
group and on attaching/detaching group.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio.c |
vfio_pfn.ref_count is always updated while holding iommu->lock, using
atomic variable is overkill.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Eric Auger
Reviewed-by: Cornelia Huck
---
drivers/vfio/vfio_iommu_type1.c | 9 +
1 file changed, 5 insertions(+)
support to start/stop dirtied pages tracking and to get bitmap of all
dirtied pages for requested IO virtual address range.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 56 +++
1 file changed, 56 insertions
Calculate and cache pgsize_bitmap when iommu->domain_list is updated
and iommu->external_domain is set for mdev device.
Add iommu->lock protection when cached pgsize_bitmap is accessed.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Cornelia Huck
---
dri
with the smallest supported page size. Update bitmap from
pinning functions when tracking is enabled. When user application queries
bitmap, check if requested page size is same as page size used to
populated bitmap. If it is equal, copy bitmap, but if not equal, return
error.
Signed-off-by: Kirti Wankhede
on
of the region.
- Moved PCI device functions to pci file.
- Added iteration to get dirty page bitmap until bitmap for all requested
pages are copied.
Thanks,
Kirti
Kirti Wankhede (8):
vfio: UAPI for migration interface for device state
vfio iommu: Remove atomicity of ref_count of pinne
transition details.
- Defined sequence to be followed while saving and resuming VFIO device.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 228 ++
1 file changed, 228 insertions(+)
diff --git a/include/uapi/linux
On 5/20/2020 4:12 PM, Cornelia Huck wrote:
On Mon, 18 May 2020 11:26:36 +0530
Kirti Wankhede wrote:
Added migration capability in IOMMU info chain.
User application should check IOMMU info chain for migration capability
to use dirty page tracking feature provided by kernel module.
User
On 5/20/2020 3:57 PM, Cornelia Huck wrote:
On Tue, 19 May 2020 12:24:13 +0530
Kirti Wankhede wrote:
DMA mapped pages, including those pinned by mdev vendor drivers, might
get unpinned and unmapped while migration is active and device is still
running. For example, in pre-copy phase while
On 5/20/2020 3:38 PM, Cornelia Huck wrote:
On Mon, 18 May 2020 11:26:32 +0530
Kirti Wankhede wrote:
Calculate and cache pgsize_bitmap when iommu->domain_list is updated
and iommu->external_domain is set for mdev device.
Add iommu->lock protection when cached pgsize_bitmap is
On 5/20/2020 8:25 AM, Yan Zhao wrote:
On Tue, May 19, 2020 at 10:58:04AM -0600, Alex Williamson wrote:
Hi folks,
My impression is that we're getting pretty close to a workable
implementation here with v22 plus respins of patches 5, 6, and 8. We
also have a matching QEMU series and a
VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_type1.c | 62 +
include/uapi/linux/vfio.h | 10 +++
2 files changed, 61 insertions(+), 11 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
all of the vfio_groups for each
vfio_domain in the domain_list dirty page scope is limited to pinned
pages. This flag is updated on first pinned pages request for that IOMMU
group and on attaching/detaching group.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio.c |
with the smallest supported page size. Update bitmap from
pinning functions when tracking is enabled. When user application queries
bitmap, check if requested page size is same as page size used to
populated bitmap. If it is equal, copy bitmap, but if not equal, return
error.
Signed-off-by: Kirti Wankhede
On 5/19/2020 3:23 AM, Alex Williamson wrote:
On Mon, 18 May 2020 11:26:34 +0530
Kirti Wankhede wrote:
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking while migration is active
- Stop dirty pages tracking.
- Get dirty pages bitmap. Its user space
Added amount of bytes transferred to the target VM by all VFIO devices
Signed-off-by: Kirti Wankhede
---
hw/vfio/common.c| 20
hw/vfio/migration.c | 10 +-
include/qemu/vfio-helpers.h | 3 +++
migration/migration.c | 12
and use
migration blocker from generic structure of VFIO device.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/pci.c | 32 +++-
hw/vfio/pci.h | 1 -
2 files changed, 11 insertions(+), 22 deletions(-)
diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c
index
Call VFIO_IOMMU_DIRTY_PAGES ioctl to start and stop dirty pages tracking
for VFIO devices.
Signed-off-by: Kirti Wankhede
---
hw/vfio/migration.c | 36
1 file changed, 36 insertions(+)
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index b9bbe38e539c
vfio_listener_log_sync gets list of dirty pages from container using
VFIO_IOMMU_GET_DIRTY_BITMAP ioctl and mark those pages dirty when all
devices are stopped and saving state.
Return early for the RAM block section of mapped MMIO region.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Signed-off-by: Kirti Wankhede
---
memory.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/memory.c b/memory.c
index 52f1a4cd37f0..5b868fe5eab3 100644
--- a/memory.c
+++ b/memory.c
@@ -1788,7 +1788,7 @@ bool memory_region_is_ram_device(MemoryRegion *mr)
uint8_t
to see how I can test this
code path.
Suggested-by: Alex Williamson
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/common.c | 87 +---
1 file changed, 83 insertions(+), 4 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio
Added migration state change notifier to get notification on migration state
change. These states are translated to VFIO device state and conveyed to vendor
driver.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/migration.c | 30 ++
hw/vfio
Added helper functions to get IOMMU info capability chain.
Added function to get migration capability information from that
capability chain for IOMMU container.
Similar change was proposed earlier:
https://lists.gnu.org/archive/html/qemu-devel/2018-05/msg03759.html
Signed-off-by: Kirti Wankhede
Add optional method to get address limit IOMMU supports
Signed-off-by: Kirti Wankhede
---
hw/i386/intel_iommu.c | 9 +
include/exec/memory.h | 18 ++
memory.c | 11 +++
3 files changed, 38 insertions(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386
is written in
staging buffer.
For user, data is opaque. User should write data in the same order as
received.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/migration.c | 180 +++
hw/vfio/trace-events | 3 +
2 files changed, 183
is supported else migration is
blocked.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/Makefile.objs | 2 +-
hw/vfio/migration.c | 138 ++
hw/vfio/trace-events | 3 +
include/hw/vfio/vfio-common.h | 9 +++
4 files
data_size before moving to next steps.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/migration.c | 254 +-
hw/vfio/trace-events | 6 +
include/hw/vfio/vfio-common.h | 1 +
3 files changed, 260 insertions(+), 1 deletion
These functions save and restore PCI device specific data - config
space of PCI device.
Tested save and restore with MSI and MSIX type.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/pci.c | 163 ++
include/hw/vfio/vfio
This function will be used for migration region.
Migration region is mmaped when migration starts and will be unmapped when
migration is complete.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Cornelia Huck
---
hw/vfio/common.c | 30
when .save_setup is called, _SAVING | _RUNNING state is set for VFIO
device. During save-restore, VM is paused, _SAVING state is set for VFIO device.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/migration.c | 73
hw/vfio/t
VM state change handler gets called on change in VM's state. This is used to set
VFIO device state to _RUNNING.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
hw/vfio/migration.c | 87 +++
hw/vfio/trace-events | 2 +
include
Hook vfio_get_object callback for PCI devices.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Suggested-by: Cornelia Huck
Reviewed-by: Cornelia Huck
---
hw/vfio/pci.c | 8
include/hw/vfio/vfio-common.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/hw/vfio
region.
- Added both type of access support, trapped or mmapped, for data section of the
region.
- Moved PCI device functions to pci file.
- Added iteration to get dirty page bitmap until bitmap for all requested pages
are copied.
Thanks,
Kirti
Kirti Wankhede (18):
vfio: KABI for migration i
Kernel header patches are being reviewed along with kernel side changes.
This patch is only for place holder.
This patch include all changes in vfio.h from above patch set
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
linux-headers/linux/vfio.h | 318
for ioctls used to get
dirty bitmap.
Signed-off-by: Kirti Wankhede
---
drivers/vfio/vfio_iommu_type1.c | 23 ++-
include/uapi/linux/vfio.h | 22 ++
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
all of the vfio_groups for each
vfio_domain in the domain_list dirty page scope is limited to pinned
pages. This flag is updated on first pinned pages request for that IOMMU
group and on attaching/detaching group.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio.c |
support to start/stop dirtied pages tracking and to get bitmap of all
dirtied pages for requested IO virtual address range.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 55 +++
1 file changed, 55 insertions
VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_type1.c | 68 +
include/uapi/linux/vfio.h | 10 ++
2 files changed, 66 insertions(+), 12 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
with the smallest supported page size. Update bitmap from
pinning functions when tracking is enabled. When user application queries
bitmap, check if requested page size is same as page size used to
populated bitmap. If it is equal, copy bitmap, but if not equal, return
error.
Signed-off-by: Kirti Wankhede
vfio_pfn.ref_count is always updated while holding iommu->lock, using
atomic variable is overkill.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Eric Auger
Reviewed-by: Cornelia Huck
---
drivers/vfio/vfio_iommu_type1.c | 9 +
1 file changed, 5 insertions(+)
e.
- Added iteration to get dirty page bitmap until bitmap for all requested
pages are copied.
Thanks,
Kirti
Kirti Wankhede (8):
vfio: UAPI for migration interface for device state
vfio iommu: Remove atomicity of ref_count of pinned pages
vfio iommu: Cache pgsize_bitmap in struct vfio_iommu
transition details.
- Defined sequence to be followed while saving and resuming VFIO device.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 228 ++
1 file changed, 228 insertions(+)
diff --git a/include/uapi/linux
Calculate and cache pgsize_bitmap when iommu->domain_list is updated
and iommu->external_domain is set for mdev device.
Add iommu->lock protection when cached pgsize_bitmap is accessed.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_typ
side:
https://lore.kernel.org/kvm/1588614860-16330-1-git-send-email-kwankh...@nvidia.com/
I'm working on preparing QEMU patches for v21 and will be sending out soon.
Thanks,
Kirti
On 2020/5/16 5:13, Kirti Wankhede wrote:
Hi,
This patch set adds:
* IOCTL VFIO_IOMMU_DIRTY_PAGES to get dirty
side patches with all review comments on those
patches. Still I'll send out QEMU patches which are compatible with v21
and will cover rest of the comments in later revision.
Thanks,
Kirti
Thanks
Kevin
From: Kirti Wankhede
Sent: Saturday, May 16, 2020 5:13 AM
Hi,
This patch set adds
/lra0BpLqY9FQLPkCc2up9t94NJ15nHzMx+poYTeVeomWq
x3b9j+KGJesMojeYHF4p02v5kpaquce7dYmP7FjlUMTdEZTgbB46FMu/GynDs3ZPLp
5Jj51SmTeTP/0NR8+K7XjbAFdNc/ux1RzpNITw6FFJ7kmcIImwoKGPat0qKhpN2P6u
J2ThfIZtvw0wg==
On 5/16/2020 4:03 AM, Alex Williamson wrote:
On Sat, 16 May 2020 02:43:20 +0530
Kirti Wankhede
for ioctls used to get
dirty bitmap.
Signed-off-by: Kirti Wankhede
---
drivers/vfio/vfio_iommu_type1.c | 23 ++-
include/uapi/linux/vfio.h | 22 ++
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
all of the vfio_groups for each
vfio_domain in the domain_list dirty page scope is limited to pinned
pages. This flag is updated on first pinned pages request for that IOMMU
group and on attaching/detaching group.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio.c |
vfio_pfn.ref_count is always updated while holding iommu->lock, using
atomic variable is overkill.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Eric Auger
Reviewed-by: Cornelia Huck
---
drivers/vfio/vfio_iommu_type1.c | 9 +
1 file changed, 5 insertions(+)
transition details.
- Defined sequence to be followed while saving and resuming VFIO device.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 228 ++
1 file changed, 228 insertions(+)
diff --git a/include/uapi/linux
VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_type1.c | 68 +
include/uapi/linux/vfio.h | 10 ++
2 files changed, 66 insertions(+), 12 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
with the smallest supported page size. Update bitmap from
pinning functions when tracking is enabled. When user application queries
bitmap, check if requested page size is same as page size used to
populated bitmap. If it is equal, copy bitmap, but if not equal, return
error.
Signed-off-by: Kirti Wankhede
Calculate and cache pgsize_bitmap when iommu->domain_list is updated
and iommu->external_domain is set for mdev device.
Add iommu->lock protection when cached pgsize_bitmap is accessed.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_typ
l with read/write for trapped part of migration region.
- Added both type of access support, trapped or mmapped, for data section
of the region.
- Moved PCI device functions to pci file.
- Added iteration to get dirty page bitmap until bitmap for all requested
pages are copied.
Thanks,
Ki
support to start/stop dirtied pages tracking and to get bitmap of all
dirtied pages for requested IO virtual address range.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 55 +++
1 file changed, 55 insertions
On 5/15/2020 4:29 PM, Cornelia Huck wrote:
On Fri, 15 May 2020 02:07:43 +0530
Kirti Wankhede wrote:
IOMMU container maintains a list of all pages pinned by vfio_pin_pages API.
All pages pinned by vendor driver through this API should be considered as
dirty during migration. When container
On 5/15/2020 8:45 PM, Alex Williamson wrote:
On Fri, 15 May 2020 16:44:38 +0530
Kirti Wankhede wrote:
On 5/15/2020 3:35 PM, Yan Zhao wrote:
On Fri, May 15, 2020 at 02:07:44AM +0530, Kirti Wankhede wrote:
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking
On 5/15/2020 7:01 PM, Alex Williamson wrote:
On Fri, 15 May 2020 12:17:03 +0530
Kirti Wankhede wrote:
On 5/15/2020 11:17 AM, Alex Williamson wrote:
On Fri, 15 May 2020 09:46:43 +0530
Kirti Wankhede wrote:
On 5/15/2020 8:57 AM, Alex Williamson wrote:
On Fri, 15 May 2020 02:07:45
On 5/15/2020 3:35 PM, Yan Zhao wrote:
On Fri, May 15, 2020 at 02:07:44AM +0530, Kirti Wankhede wrote:
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking while migration is active
- Stop dirty pages tracking.
- Get dirty pages bitmap. Its user space
On 5/15/2020 11:17 AM, Alex Williamson wrote:
On Fri, 15 May 2020 09:46:43 +0530
Kirti Wankhede wrote:
On 5/15/2020 8:57 AM, Alex Williamson wrote:
On Fri, 15 May 2020 02:07:45 +0530
Kirti Wankhede wrote:
DMA mapped pages, including those pinned by mdev vendor drivers, might
get
On 5/15/2020 8:57 AM, Alex Williamson wrote:
On Fri, 15 May 2020 02:07:45 +0530
Kirti Wankhede wrote:
DMA mapped pages, including those pinned by mdev vendor drivers, might
get unpinned and unmapped while migration is active and device is still
running. For example, in pre-copy phase while
all of the vfio_groups for each
vfio_domain in the domain_list dirty page scope is limited to pinned
pages. This flag is updated on first pinned pages request for that IOMMU
group and on attaching/detaching group.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio.c |
Calculate and cache pgsize_bitmap when iommu->domain_list is updated
and iommu->external_domain is set for mdev device.
Add iommu->lock protection when cached pgsize_bitmap is accessed.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_typ
VFIO_DMA_UNMAP_FLAG_GET_DIRTY_BITMAP.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_type1.c | 77 ++---
include/uapi/linux/vfio.h | 10 ++
2 files changed, 75 insertions(+), 12 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
vfio_pfn.ref_count is always updated while holding iommu->lock, using
atomic variable is overkill.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Eric Auger
Reviewed-by: Cornelia Huck
---
drivers/vfio/vfio_iommu_type1.c | 9 +
1 file changed, 5 insertions(+)
with the smallest supported page size. Update bitmap from
pinning functions when tracking is enabled. When user application queries
bitmap, check if requested page size is same as page size used to
populated bitmap. If it is equal, copy bitmap, but if not equal, return
error.
Signed-off-by: Kirti Wankhede
support to start/stop dirtied pages tracking and to get bitmap of all
dirtied pages for requested IO virtual address range.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 55 +++
1 file changed, 55 insertions
for ioctls used to get
dirty bitmap.
Signed-off-by: Kirti Wankhede
---
drivers/vfio/vfio_iommu_type1.c | 23 ++-
include/uapi/linux/vfio.h | 22 ++
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
get dirty page bitmap until bitmap for all requested
pages are copied.
Thanks,
Kirti
Kirti Wankhede (8):
vfio: UAPI for migration interface for device state
vfio iommu: Remove atomicity of ref_count of pinned pages
vfio iommu: Cache pgsize_bitmap in struct vfio_iommu
vfio iommu: Add ioctl defi
transition details.
- Defined sequence to be followed while saving and resuming VFIO device.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 228 ++
1 file changed, 228 insertions(+)
diff --git a/include/uapi/linux
On 5/14/2020 10:32 AM, Alex Williamson wrote:
On Thu, 14 May 2020 01:34:36 +0530
Kirti Wankhede wrote:
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking while migration is active
- Stop dirty pages tracking.
- Get dirty pages bitmap. Its user space
On 5/14/2020 10:31 AM, Alex Williamson wrote:
On Thu, 14 May 2020 01:34:38 +0530
Kirti Wankhede wrote:
Added migration capability in IOMMU info chain.
User application should check IOMMU info chain for migration capability
to use dirty page tracking feature provided by kernel module.
User
On 5/14/2020 10:37 AM, Alex Williamson wrote:
On Thu, 14 May 2020 01:34:37 +0530
Kirti Wankhede wrote:
DMA mapped pages, including those pinned by mdev vendor drivers, might
get unpinned and unmapped while migration is active and device is still
running. For example, in pre-copy phase
all of the vfio_groups for each
vfio_domain in the domain_list dirty page scope is limited to pinned
pages. This flag is updated on first pinned pages request for that IOMMU
group and on attaching/detaching group.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio.c |
for ioctls used to get
dirty bitmap.
Signed-off-by: Kirti Wankhede
---
drivers/vfio/vfio_iommu_type1.c | 24 +++-
include/uapi/linux/vfio.h | 21 +
2 files changed, 44 insertions(+), 1 deletion(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b
.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_type1.c | 102 +++-
include/uapi/linux/vfio.h | 10
2 files changed, 99 insertions(+), 13 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio
with the smallest supported page size. Update bitmap from
pinning functions when tracking is enabled. When user application queries
bitmap, check if requested page size is same as page size used to
populated bitmap. If it is equal, copy bitmap, but if not equal, return
error.
Signed-off-by: Kirti Wankhede
Calculate and cache pgsize_bitmap when iommu->domain_list is updated.
Add iommu->lock protection when cached pgsize_bitmap is accessed.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
drivers/vfio/vfio_iommu_type1.c | 87 +++--
1 file chang
vfio_pfn.ref_count is always updated while holding iommu->lock, using
atomic variable is overkill.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
Reviewed-by: Eric Auger
Reviewed-by: Cornelia Huck
---
drivers/vfio/vfio_iommu_type1.c | 9 +
1 file changed, 5 insertions(+)
support to start/stop dirtied pages tracking and to get bitmap of all
dirtied pages for requested IO virtual address range.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 56 +++
1 file changed, 56 insertions
transition details.
- Defined sequence to be followed while saving and resuming VFIO device.
Signed-off-by: Kirti Wankhede
Reviewed-by: Neo Jia
---
include/uapi/linux/vfio.h | 228 ++
1 file changed, 228 insertions(+)
diff --git a/include/uapi/linux
ata section
of the region.
- Moved PCI device functions to pci file.
- Added iteration to get dirty page bitmap until bitmap for all requested
pages are copied.
Thanks,
Kirti
Kirti Wankhede (8):
vfio: UAPI for migration interface for device state
vfio iommu: Remove atomicity of ref_count of
On 5/6/2020 4:24 PM, Cornelia Huck wrote:
On Mon, 4 May 2020 21:28:56 +0530
Kirti Wankhede wrote:
VFIO_IOMMU_DIRTY_PAGES ioctl performs three operations:
- Start dirty pages tracking while migration is active
- Stop dirty pages tracking.
- Get dirty pages bitmap. Its user space
On 5/7/2020 3:55 AM, Alex Williamson wrote:
On Mon, 4 May 2020 21:28:57 +0530
Kirti Wankhede wrote:
DMA mapped pages, including those pinned by mdev vendor drivers, might
get unpinned and unmapped while migration is active and device is still
running. For example, in pre-copy phase while
On 5/9/2020 11:01 AM, Yan Zhao wrote:
On Wed, Mar 25, 2020 at 05:09:07AM +0800, Kirti Wankhede wrote:
Added .save_live_pending, .save_live_iterate and .save_live_complete_precopy
functions. These functions handles pre-copy and stop-and-copy phase.
In _SAVING|_RUNNING device state or pre
On 5/5/2020 10:07 AM, Alex Williamson wrote:
On Tue, 5 May 2020 04:48:14 +0530
Kirti Wankhede wrote:
On 3/26/2020 3:33 AM, Alex Williamson wrote:
On Wed, 25 Mar 2020 02:39:07 +0530
Kirti Wankhede wrote:
Added .save_live_pending, .save_live_iterate and .save_live_complete_precopy
On 5/7/2020 6:31 AM, Yan Zhao wrote:
On Tue, May 05, 2020 at 01:54:20AM +0800, Kirti Wankhede wrote:
This patch makes mtty device migration capable. Purpose od this code is
to test migration interface. Only stop-and-copy phase is implemented.
Postcopy migration is not supported.
Actual data
On 5/7/2020 1:33 AM, Alex Williamson wrote:
On Thu, 7 May 2020 01:18:19 +0530
Kirti Wankhede wrote:
On 5/6/2020 11:41 AM, Yan Zhao wrote:
On Tue, May 05, 2020 at 12:37:11PM +0800, Alex Williamson wrote:
On Tue, 5 May 2020 04:48:37 +0530
Kirti Wankhede wrote:
On 3/26/2020 1:26 AM
On 5/7/2020 3:57 AM, Alex Williamson wrote:
On Mon, 4 May 2020 21:28:58 +0530
Kirti Wankhede wrote:
Added migration capability in IOMMU info chain.
User application should check IOMMU info chain for migration capability
to use dirty page tracking feature provided by kernel module.
Signed
On 5/6/2020 11:41 AM, Yan Zhao wrote:
On Tue, May 05, 2020 at 12:37:11PM +0800, Alex Williamson wrote:
On Tue, 5 May 2020 04:48:37 +0530
Kirti Wankhede wrote:
On 3/26/2020 1:26 AM, Alex Williamson wrote:
On Wed, 25 Mar 2020 02:39:02 +0530
Kirti Wankhede wrote:
These functions save
On 5/6/2020 1:45 PM, Yan Zhao wrote:
On Mon, May 04, 2020 at 11:58:56PM +0800, Kirti Wankhede wrote:
/*
* Helper Functions for host iova-pfn list
*/
@@ -567,6 +654,18 @@ static int vfio_iommu_type1_pin_pages(void *iommu_data,
vfio_unpin_page_external(dma
On 5/6/2020 10:23 PM, Dr. David Alan Gilbert wrote:
* Cornelia Huck (coh...@redhat.com) wrote:
On Wed, 6 May 2020 02:38:46 -0400
Yan Zhao wrote:
On Tue, May 05, 2020 at 12:37:26PM +0800, Alex Williamson wrote:
It's been a long time, but that doesn't seem like what I was asking.
The sysfs
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