On 04/20/2015 12:44 PM, David Gibson wrote:
On Fri, Apr 17, 2015 at 08:09:29PM +1000, Alexey Kardashevskiy wrote:
On 04/16/2015 04:07 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:56PM +1000, Alexey Kardashevskiy wrote:
At the moment the iommu_table struct has a set_bypass() which
On 04/16/2015 04:26 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:59PM +1000, Alexey Kardashevskiy wrote:
At the moment writing new TCE value to the IOMMU table fails with EBUSY
if there is a valid entry already. However PAPR specification allows
the guest to write new TCE value without
On 04/16/2015 04:10 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:57PM +1000, Alexey Kardashevskiy wrote:
This adds missing locks in iommu_take_ownership()/
iommu_release_ownership().
This marks all pages busy in iommu_table::it_map in order to catch
errors if there is an attempt
On 04/16/2015 04:07 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:56PM +1000, Alexey Kardashevskiy wrote:
At the moment the iommu_table struct has a set_bypass() which enables/
disables DMA bypass on IODA2 PHB. This is exposed to POWERPC IOMMU code
which calls this callback when
On 04/16/2015 03:55 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:54PM +1000, Alexey Kardashevskiy wrote:
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table
On 04/16/2015 04:07 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:56PM +1000, Alexey Kardashevskiy wrote:
At the moment the iommu_table struct has a set_bypass() which enables/
disables DMA bypass on IODA2 PHB. This is exposed to POWERPC IOMMU code
which calls this callback when
On 04/16/2015 03:55 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:54PM +1000, Alexey Kardashevskiy wrote:
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table
On 04/16/2015 04:26 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:59PM +1000, Alexey Kardashevskiy wrote:
At the moment writing new TCE value to the IOMMU table fails with EBUSY
if there is a valid entry already. However PAPR specification allows
the guest to write new TCE value without
On 04/16/2015 04:10 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:57PM +1000, Alexey Kardashevskiy wrote:
This adds missing locks in iommu_take_ownership()/
iommu_release_ownership().
This marks all pages busy in iommu_table::it_map in order to catch
errors if there is an attempt
On 04/16/2015 04:46 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:31:03PM +1000, Alexey Kardashevskiy wrote:
The iommu_free_table helper release memory it is using (the TCE table and
@it_map) and release the iommu_table struct as well. We might not want
the very last step as we store
On 04/16/2015 03:55 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:54PM +1000, Alexey Kardashevskiy wrote:
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table
On 04/16/2015 03:55 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:54PM +1000, Alexey Kardashevskiy wrote:
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table
On 04/16/2015 04:46 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:31:03PM +1000, Alexey Kardashevskiy wrote:
The iommu_free_table helper release memory it is using (the TCE table and
@it_map) and release the iommu_table struct as well. We might not want
the very last step as we store
On 04/15/2015 05:10 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:49PM +1000, Alexey Kardashevskiy wrote:
This is a pretty mechanical patch to make next patches simpler.
New tce_iommu_unuse_page() helper does put_page() now but it might skip
that after the memory registering patch
On 04/15/2015 05:10 PM, David Gibson wrote:
On Fri, Apr 10, 2015 at 04:30:49PM +1000, Alexey Kardashevskiy wrote:
This is a pretty mechanical patch to make next patches simpler.
New tce_iommu_unuse_page() helper does put_page() now but it might skip
that after the memory registering patch
On 04/09/2015 01:43 AM, Alex Williamson wrote:
On Wed, 2015-04-08 at 13:22 +1000, Alexey Kardashevskiy wrote:
On 04/03/2015 07:50 AM, Alex Williamson wrote:
Should have sent this with the other comments, but found it hiding on my
desktop...
On Sat, 2015-03-28 at 01:55 +1100, Alexey
On 04/09/2015 01:43 AM, Alex Williamson wrote:
On Wed, 2015-04-08 at 13:22 +1000, Alexey Kardashevskiy wrote:
On 04/03/2015 07:50 AM, Alex Williamson wrote:
Should have sent this with the other comments, but found it hiding on my
desktop...
On Sat, 2015-03-28 at 01:55 +1100, Alexey
On 04/03/2015 07:50 AM, Alex Williamson wrote:
Should have sent this with the other comments, but found it hiding on my
desktop...
On Sat, 2015-03-28 at 01:55 +1100, Alexey Kardashevskiy wrote:
In order to support memory pre-registration, we need a way to track
the use of every registered
On 04/03/2015 07:50 AM, Alex Williamson wrote:
Should have sent this with the other comments, but found it hiding on my
desktop...
On Sat, 2015-03-28 at 01:55 +1100, Alexey Kardashevskiy wrote:
In order to support memory pre-registration, we need a way to track
the use of every registered
On 04/02/2015 01:50 PM, Alex Williamson wrote:
On Thu, 2015-04-02 at 13:30 +1100, Alexey Kardashevskiy wrote:
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:54 +1100, Alexey Kardashevskiy wrote:
This makes use of the it_page_size from the iommu_table struct
as page
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:55 +1100, Alexey Kardashevskiy wrote:
We are adding support for DMA memory pre-registration to be used in
conjunction with VFIO. The idea is that the userspace which is going to
run a guest may want to pre-register a user
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:54 +1100, Alexey Kardashevskiy wrote:
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:54 +1100, Alexey Kardashevskiy wrote:
This makes use of the it_page_size from the iommu_table struct
as page size can differ.
This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code
as recently introduced
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:54 +1100, Alexey Kardashevskiy wrote:
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table
On 04/02/2015 01:50 PM, Alex Williamson wrote:
On Thu, 2015-04-02 at 13:30 +1100, Alexey Kardashevskiy wrote:
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:54 +1100, Alexey Kardashevskiy wrote:
This makes use of the it_page_size from the iommu_table struct
as page
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:55 +1100, Alexey Kardashevskiy wrote:
We are adding support for DMA memory pre-registration to be used in
conjunction with VFIO. The idea is that the userspace which is going to
run a guest may want to pre-register a user
On 04/02/2015 08:48 AM, Alex Williamson wrote:
On Sat, 2015-03-28 at 01:54 +1100, Alexey Kardashevskiy wrote:
This makes use of the it_page_size from the iommu_table struct
as page size can differ.
This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code
as recently introduced
This is a part of moving DMA window programming to an iommu_ops
callback.
This is a mechanical patch.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 85 ---
1 file changed, 56 insertions(+), 29 deletions(-)
diff --git a/arch
to
track the number of registrations.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/mmu-hash64.h | 3 +
arch/powerpc/include/asm/mmu_context.h | 16 +++
arch/powerpc/mm/Makefile | 1 +
arch/powerpc/mm/mmu_context_hash64.c | 6 +
arch/powerpc
This clears the TCE table when a container is being closed as this is
a good thing to leave the table clean before passing the ownership
back to the host kernel.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 14 +++---
1 file changed, 11 insertions(+), 3
This changes few functions to receive a iommu_table_group pointer
rather than PE as they are going to be a part of upcoming
iommu_table_group_ops callback set.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 13 -
1 file changed, 8 insertions
ce "multi" callbacks with single
ones.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 17 +++
arch/powerpc/include/asm/machdep.h | 25
arch/powerpc/kernel/iommu.c | 46 +++---
else/more so let's give it
more generic name. The bool parameter is inverted.
The callback is implemented for IODA2 only. Other platforms (P5IOC2,
IODA1) will use the old iommu_take_ownership/iommu_release_ownership API.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table is supported.
Signed-off-by: Alexey Kardashevskiy
---
Documentation/vfio.txt | 23
be required to be bigger than the guest RAM. This also prints
pid of the current process in pr_warn/pr_debug.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v4:
* new helpers do nothing if @npages == 0
* tce_iommu_disable() now can decrement the counter if the group was
detached (not possible now
the iommu table(s).
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 1 +
arch/powerpc/kernel/iommu.c| 9 +
arch/powerpc/platforms/powernv/pci.c | 2 +-
arch/powerpc/platforms/pseries/iommu.c | 12
4 files changed, 15 insertions
At the moment DMA map/unmap requests are handled irrespective to
the container's state. This allows the user space to pin memory which
it might not be allowed to pin.
This adds checks to MAP/UNMAP that the container is enabled, otherwise
-EPERM is returned.
Signed-off-by: Alexey Kardashevskiy
counterpart is there already)
and uses it for powernv's pnv_tce_build().
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 1 +
arch/powerpc/kernel/iommu.c | 15 +++
arch/powerpc/platforms/powernv/pci.c | 7 +--
3 files changed, 17 insertions(+), 6
powerpc/powernv: Release replaced TCE"
* reposted to make some noise
Alexey Kardashevskiy (31):
vfio: powerpc/spapr: Move page pinning from arch code to VFIO IOMMU
driver
vfio: powerpc/spapr: Do cleanup when releasing the group
vfio: powerpc/spapr: Check that TCE page size is equal
for
the sake of TCE acceleration in KVM (coming soon).
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v7:
* s/VFIO_IOMMU_INFO_DDW/VFIO_IOMMU_SPAPR_INFO_DDW/
* fixed typos in and updated vfio.txt
* fixed VFIO_IOMMU_SPAPR_TCE_GET_INFO handler
* moved ddw properties to vfio_iommu_spapr_tce_ddw_info
.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v6:
* tce_get_hva() returns hva via a pointer
---
drivers/vfio/vfio_iommu_spapr_tce.c | 68 +++--
1 file changed, 50 insertions(+), 18 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c
b/drivers/vfio
This is a part of moving TCE table allocation into an iommu_ops
callback to support multiple IOMMU groups per one VFIO container.
This enforce window size to be a power of two.
This is a pretty mechanical patch.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c
in it_map.
Clearing must be done outside of the table locks as iommu_clear_tce()
called from iommu_clear_tces_and_put_pages() does this.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v5:
* do not store bit#0 value, it has to be set for zero-based table
anyway
* removed test_and_clear_bit
---
arch
This replaces iommu_take_ownership()/iommu_release_ownership() calls
with the callback calls and it is up to the platform code to call
iommu_take_ownership()/iommu_release_ownership() if needed.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 4 +--
arch/powerpc
() are supposed to be called once per
VFIO container and set_window()/unset_window() are supposed to be
called for every group in a container.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 21 +++
arch/powerpc/platforms/powernv/pci-ioda.c | 87
This is to make extended ownership and multiple groups support patches
simpler for review.
This is a mechanical patch.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 38 ++---
1 file changed, 23 insertions(+), 15 deletions(-)
diff
are PCI addresses shifted by IOMMU page shift.
The patch is pretty mechanical and behaviour is not expected to change.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 92 ++---
arch/powerpc/platforms/powernv/pci-p5ioc2.c | 9 ++-
arch
This moves iommu_table creation to the beginning. This is a mechanical
patch.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 34 ---
1 file changed, 18 insertions(+), 16 deletions(-)
diff --git a/arch/powerpc/platforms/powernv
to create/set DMA windows on IOMMU groups so the same TCE tables will be
shared between several IOMMU groups.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v7:
* updated doc
---
Documentation/vfio.txt | 8 +-
drivers/vfio/vfio_iommu_spapr_tce.c | 289
to 5 levels which splits the table into a tree of smaller subtables.
This adds multi-level TCE tables support to pnv_pci_ioda2_create_table()
and pnv_pci_ioda2_free_table() callbacks.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 2 +
arch/powerpc/platforms
.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v7:
* now memory is registered per mm (i.e. process)
* moved memory registration code to powerpc/mmu
* merged "vfio: powerpc/spapr: Define v2 IOMMU" into this
* limited new ioctls to v2 IOMMU
* updated doc
* unsupported ioclts return -ENOT
are to be calculated by platform code from DMA direction.
This moves SetPageDirty() to the IOMMU code to make it work for both
VFIO ioctl interface in in-kernel TCE acceleration (when it becomes
available later).
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 17
The iommu_free_table helper release memory it is using (the TCE table and
@it_map) and release the iommu_table struct as well. We might not want
the very last step as we store iommu_table in parent structures.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 1 +
arch
into iommu_table struct.
It contains userspace address, one per TCE entry. The table is only
allocated when the ownership over an IOMMU group is taken which means
it is only used from outside of the powernv code (such as VFIO).
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h
.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 5 +++
arch/powerpc/platforms/powernv/pci-ioda.c | 54 +++
2 files changed, 59 insertions(+)
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm/iommu.h
index
to the platform code, VFIO
unprograms and removes all the tables it created.
Old-style ownership is still supported allowing VFIO to run on older
P5IOC2 and IODA IO controllers.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v6:
* fixed commit log that VFIO removes tables before passing ownership
This makes use of the it_page_size from the iommu_table struct
as page size can differ.
This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code
as recently introduced IOMMU_PAGE_XXX macros do not include
IOMMU_PAGE_SHIFT.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: David
compound_order() and compound_head() work correctly on non-huge
pages, there is no need for additional check whether the page is huge.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v6:
* the helper is simplified to one line
v4:
* s/tce_check_page_size/tce_page_is_contained/
---
drivers/vfio
only.
This removes page unpinning from iommu_take_ownership() as the actual
TCE table might contain garbage and doing put_page() on it is undefined
behaviour.
Besides the last part, the rest of the patch is mechanical.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v4:
* s/iommu_tce_build(tbl
only.
This removes page unpinning from iommu_take_ownership() as the actual
TCE table might contain garbage and doing put_page() on it is undefined
behaviour.
Besides the last part, the rest of the patch is mechanical.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v4:
* s
compound_order() and compound_head() work correctly on non-huge
pages, there is no need for additional check whether the page is huge.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v6:
* the helper is simplified to one line
v4:
* s/tce_check_page_size/tce_page_is_contained
The iommu_free_table helper release memory it is using (the TCE table and
@it_map) and release the iommu_table struct as well. We might not want
the very last step as we store iommu_table in parent structures.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm
into iommu_table struct.
It contains userspace address, one per TCE entry. The table is only
allocated when the ownership over an IOMMU group is taken which means
it is only used from outside of the powernv code (such as VFIO).
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include
.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h | 5 +++
arch/powerpc/platforms/powernv/pci-ioda.c | 54 +++
2 files changed, 59 insertions(+)
diff --git a/arch/powerpc/include/asm/iommu.h b/arch/powerpc/include/asm
This makes use of the it_page_size from the iommu_table struct
as page size can differ.
This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code
as recently introduced IOMMU_PAGE_XXX macros do not include
IOMMU_PAGE_SHIFT.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
Reviewed
to the platform code, VFIO
unprograms and removes all the tables it created.
Old-style ownership is still supported allowing VFIO to run on older
P5IOC2 and IODA IO controllers.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v6:
* fixed commit log that VFIO removes tables before
to 5 levels which splits the table into a tree of smaller subtables.
This adds multi-level TCE tables support to pnv_pci_ioda2_create_table()
and pnv_pci_ioda2_free_table() callbacks.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h | 2 +
arch
.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v7:
* now memory is registered per mm (i.e. process)
* moved memory registration code to powerpc/mmu
* merged vfio: powerpc/spapr: Define v2 IOMMU into this
* limited new ioctls to v2 IOMMU
* updated doc
* unsupported ioclts return -ENOTTY
to create/set DMA windows on IOMMU groups so the same TCE tables will be
shared between several IOMMU groups.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v7:
* updated doc
---
Documentation/vfio.txt | 8 +-
drivers/vfio/vfio_iommu_spapr_tce.c | 289
are to be calculated by platform code from DMA direction.
This moves SetPageDirty() to the IOMMU code to make it work for both
VFIO ioctl interface in in-kernel TCE acceleration (when it becomes
available later).
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h
This moves iommu_table creation to the beginning. This is a mechanical
patch.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/platforms/powernv/pci-ioda.c | 34 ---
1 file changed, 18 insertions(+), 16 deletions(-)
diff --git a/arch/powerpc
This is to make extended ownership and multiple groups support patches
simpler for review.
This is a mechanical patch.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
drivers/vfio/vfio_iommu_spapr_tce.c | 38 ++---
1 file changed, 23 insertions(+), 15
in it_map.
Clearing must be done outside of the table locks as iommu_clear_tce()
called from iommu_clear_tces_and_put_pages() does this.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v5:
* do not store bit#0 value, it has to be set for zero-based table
anyway
* removed test_and_clear_bit
This replaces iommu_take_ownership()/iommu_release_ownership() calls
with the callback calls and it is up to the platform code to call
iommu_take_ownership()/iommu_release_ownership() if needed.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h| 4
the iommu table(s).
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h | 1 +
arch/powerpc/kernel/iommu.c| 9 +
arch/powerpc/platforms/powernv/pci.c | 2 +-
arch/powerpc/platforms/pseries/iommu.c | 12
4 files changed, 15
At the moment DMA map/unmap requests are handled irrespective to
the container's state. This allows the user space to pin memory which
it might not be allowed to pin.
This adds checks to MAP/UNMAP that the container is enabled, otherwise
-EPERM is returned.
Signed-off-by: Alexey Kardashevskiy
.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v6:
* tce_get_hva() returns hva via a pointer
---
drivers/vfio/vfio_iommu_spapr_tce.c | 68 +++--
1 file changed, 50 insertions(+), 18 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c
b/drivers
counterpart is there already)
and uses it for powernv's pnv_tce_build().
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h | 1 +
arch/powerpc/kernel/iommu.c | 15 +++
arch/powerpc/platforms/powernv/pci.c | 7 +--
3 files changed, 17
* reposted to make some noise
Alexey Kardashevskiy (31):
vfio: powerpc/spapr: Move page pinning from arch code to VFIO IOMMU
driver
vfio: powerpc/spapr: Do cleanup when releasing the group
vfio: powerpc/spapr: Check that TCE page size is equal to it_page_size
vfio: powerpc/spapr: Use
() are supposed to be called once per
VFIO container and set_window()/unset_window() are supposed to be
called for every group in a container.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h| 21 +++
arch/powerpc/platforms/powernv/pci-ioda.c | 87
This is a part of moving TCE table allocation into an iommu_ops
callback to support multiple IOMMU groups per one VFIO container.
This enforce window size to be a power of two.
This is a pretty mechanical patch.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/platforms
for
the sake of TCE acceleration in KVM (coming soon).
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v7:
* s/VFIO_IOMMU_INFO_DDW/VFIO_IOMMU_SPAPR_INFO_DDW/
* fixed typos in and updated vfio.txt
* fixed VFIO_IOMMU_SPAPR_TCE_GET_INFO handler
* moved ddw properties
are PCI addresses shifted by IOMMU page shift.
The patch is pretty mechanical and behaviour is not expected to change.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/platforms/powernv/pci-ioda.c | 92 ++---
arch/powerpc/platforms/powernv/pci-p5ioc2.c
be required to be bigger than the guest RAM. This also prints
pid of the current process in pr_warn/pr_debug.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Changes:
v4:
* new helpers do nothing if @npages == 0
* tce_iommu_disable() now can decrement the counter if the group was
detached
This changes few functions to receive a iommu_table_group pointer
rather than PE as they are going to be a part of upcoming
iommu_table_group_ops callback set.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/platforms/powernv/pci-ioda.c | 13 -
1 file changed, 8
ones.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/iommu.h| 17 +++
arch/powerpc/include/asm/machdep.h | 25
arch/powerpc/kernel/iommu.c | 46 +++--
arch/powerpc/kernel/vio.c
This clears the TCE table when a container is being closed as this is
a good thing to leave the table clean before passing the ownership
back to the host kernel.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
drivers/vfio/vfio_iommu_spapr_tce.c | 14 +++---
1 file changed, 11
to
track the number of registrations.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include/asm/mmu-hash64.h | 3 +
arch/powerpc/include/asm/mmu_context.h | 16 +++
arch/powerpc/mm/Makefile | 1 +
arch/powerpc/mm/mmu_context_hash64.c | 6
This is a part of moving DMA window programming to an iommu_ops
callback.
This is a mechanical patch.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/platforms/powernv/pci-ioda.c | 85 ---
1 file changed, 56 insertions(+), 29 deletions(-)
diff
else/more so let's give it
more generic name. The bool parameter is inverted.
The callback is implemented for IODA2 only. Other platforms (P5IOC2,
IODA1) will use the old iommu_take_ownership/iommu_release_ownership API.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
arch/powerpc/include
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a iommu_table_group container
for TCE tables. Right now just one table is supported.
Signed-off-by: Alexey Kardashevskiy a...@ozlabs.ru
---
Documentation/vfio.txt
On 03/17/2015 06:45 AM, Alex Williamson wrote:
On Fri, 2015-03-13 at 19:07 +1100, Alexey Kardashevskiy wrote:
The existing IOMMU requires VFIO_IOMMU_ENABLE call to enable actual use
of the container (i.e. call DMA map/unmap) and this is where we check
the rlimit for locked pages. It assumes
On 03/17/2015 06:38 AM, Alex Williamson wrote:
On Fri, 2015-03-13 at 19:07 +1100, Alexey Kardashevskiy wrote:
This adds create/remove window ioctls to create and remove DMA windows.
sPAPR defines a Dynamic DMA windows capability which allows
para-virtualized guests to create additional DMA
On 03/17/2015 06:45 AM, Alex Williamson wrote:
On Fri, 2015-03-13 at 19:07 +1100, Alexey Kardashevskiy wrote:
The existing IOMMU requires VFIO_IOMMU_ENABLE call to enable actual use
of the container (i.e. call DMA map/unmap) and this is where we check
the rlimit for locked pages. It assumes
On 03/17/2015 06:38 AM, Alex Williamson wrote:
On Fri, 2015-03-13 at 19:07 +1100, Alexey Kardashevskiy wrote:
This adds create/remove window ioctls to create and remove DMA windows.
sPAPR defines a Dynamic DMA windows capability which allows
para-virtualized guests to create additional DMA
ired for DDW
* PEs (IOMMU groups) are passed to VFIO with no DMA windows at all so
we do not bother with iommu_table::it_map anymore
* added multilevel TCE tables support to support really huge guests
v2:
* added missing __pa() in "powerpc/powernv: Release replaced TCE"
* rep
compound_order() and compound_head() work correctly on non-huge
pages, there is no need for additional check whether the page is huge.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v6:
* the helper is simplified to one line
v4:
* s/tce_check_page_size/tce_page_is_contained/
---
drivers/vfio
This makes use of the it_page_size from the iommu_table struct
as page size can differ.
This replaces missing IOMMU_PAGE_SHIFT macro in commented debug code
as recently introduced IOMMU_PAGE_XXX macros do not include
IOMMU_PAGE_SHIFT.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: David
The iommu_free_table helper release memory it is using (the TCE table and
@it_map) and release the iommu_table struct as well. We might not want
the very last step as we store iommu_table in parent structures.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 1 +
arch
This moves iommu_table creation to the beginning. This is a mechanical
patch.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 30 --
1 file changed, 16 insertions(+), 14 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci
901 - 1000 of 1847 matches
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