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 | 31 +--
drivers/vfio/vfio_iommu_spapr_tce.c | 4 +++-
2 files changed, 20 insertions(+), 15
so VFIO performance in guests
running under PR KVM is expected to be slower than in guests running under
HV KVM or bare metal hosts.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v5:
* added global lock for xchg operations
* added missing be64_to_cpu(oldtce)
---
arch/powerpc/platforms/pseries
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 Kardashe
ot; 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 +++---
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
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
On 02/05/2015 12:32 AM, Alexander Graf wrote:
>
>
> On 03.02.15 01:12, Alex Williamson wrote:
>> On Thu, 2015-01-29 at 20:21 +1100, Alexey Kardashevskiy wrote:
>>> Modern IBM POWERPC systems support multiple (currently two) TCE tables
>>> per IOMMU group (a.k.
On 02/04/2015 05:08 PM, Paul Mackerras wrote:
> On Thu, Jan 29, 2015 at 08:21:53PM +1100, 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 g
On 02/03/2015 11:11 AM, Alex Williamson wrote:
> On Thu, 2015-01-29 at 20:21 +1100, Alexey Kardashevskiy wrote:
>> The existing implementation accounts the whole DMA window in
>> the locked_vm counter which is going to be even worse with multiple
>> containers and huge DM
assed 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"
* reposted to make some noise
Alexey Kardashevskiy
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
-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 72 +++--
1 file changed, 53 insertions(+), 19 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c
b/drivers/vfio/vfio_iommu_spapr_tce.c
index c596053..29d5708 100644
--- a/drivers
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
---
Note: we might want to get rid of it as this patchset removes it_map
from tables passed to VFIO.
Changes:
v5:
* do not store bit
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 | 8 ++-
arch
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:
v5:
* check is done for all page sizes now, not just for huge pages
* failed check returns EFAULT now (was EINVAL
This replaces multiple calls of kzalloc_node() with a new
iommu_table_alloc() helper. Right now it calls kzalloc_node() but
later it will be modified to allocate a powerpc_iommu struct with
a single iommu_table in it.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h
replaces iommu_tce_build() and iommu_clear_tce() with
a single iommu_tce_xchg().
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 13 +---
arch/powerpc/kernel/iommu.c | 50 +++
arch/powerpc/platforms/powernv/pci-ioda.c
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
rship()/iommu_release_ownership() if needed. Next patches
will remove these calls from IODA2 code.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 18 +--
arch/powerpc/kernel/iommu.c | 53 +++
arch/powerpc/platforms/powernv/pci-ioda.c
-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 333
include/uapi/linux/vfio.h | 29
2 files changed, 331 insertions(+), 31 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c
b/drivers/vfio/vfio_iommu_spapr_tce.c
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 | 4 +
arch/powerpc/platforms/powernv/pci-ioda.c | 125 +++---
arch
This changes few functions to receive a powerpc_iommu pointer
rather than PE as they are going to be a part of upcoming
powerpc_iommu_ops callback set.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 13 -
1 file changed, 8 insertions(+), 5
iommu_take_ownership/iommu_release_ownership used to be used to mark
bits in iommu_table::it_map. Since the IOMMU tables are recreated for
VFIO, it_map is always NULL.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 2 -
arch/powerpc/kernel/iommu.c | 96
so VFIO performance in guests
running under PR KVM is expected to be slower than in guests running under
HV KVM or bare metal hosts.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v5:
* added global lock for xchg operations
* added missing be64_to_cpu(oldtce)
---
arch/powerpc/platforms/pseries
user is
expected to unprogram DMA windows on PHBs before returning ownership
back to the kernel.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 31 ++
arch/powerpc/platforms/powernv/pci-ioda.c | 98 ++-
2 files changed, 113
This adds create/remove window ioctls to create and remove DMA windows.
This changes VFIO_IOMMU_SPAPR_TCE_GET_INFO handler to return additional
information such as a number of supported windows and maximum number
levels of TCE tables.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 243 +++-
1 file changed, 155 insertions(+), 88 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c
b/drivers/vfio/vfio_iommu_spapr_tce.c
index d0987ae..8bcafb7 100644
--- a
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 | 31 +--
1 file changed, 17 insertions(+), 14 deletions(-)
diff --git a/arch/powerpc/platforms/powernv
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
---
arch/powerpc/include/asm/iommu.h
ot; 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 +++---
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 | 84 ---
1 file changed, 56 insertions(+), 28 deletions(-)
diff --git a/arch
This is a part of moving TCE table allocation into an iommu_ops
callback to support multiple IOMMU groups per one VFIO container.
This is a mechanical patch.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 88 +++
1 file changed
Modern IBM POWERPC systems support multiple (currently two) TCE tables
per IOMMU group (a.k.a. PE). This adds a powerpc_iommu container
for TCE tables. Right now just one table is supported.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 18 ++--
arch
Normally a bitmap from the iommu_table is used to track what TCE entry
is in use. Since we are going to use iommu_table without its locks and
do xchg() instead, it becomes essential not to put bits which are not
implied in the direction flag.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by
On 09/23/2014 11:56 PM, Alex Williamson wrote:
> On Tue, 2014-09-23 at 13:01 +1000, Alexey Kardashevskiy wrote:
>> This defines and implements VFIO IOMMU API which lets the userspace
>> create and remove DMA windows.
>>
>> This updates VFIO_IOMMU_SPAPR_TCE_GET_I
.
Cc: sta...@vger.kernel.org # v3.13
Cc: Benjamin Herrenschmidt
Reviewed-by: Anton Blanchard
[aik: folded Anton's patch with of_property_read_u32_array]
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v3:
* of_property_read_u32_array() is used for ddw_avail[]
v2:
* updated commit log
* fixe
On 09/24/2014 06:42 AM, Alex Williamson wrote:
> On Tue, 2014-09-23 at 13:00 +1000, Alexey Kardashevskiy wrote:
>> Modern IBM POWERPC systems support multiple IOMMU tables per PE
>> so we need a more reliable way (compared to container_of()) to get
>> a PE pointer from t
-by: Alexey Kardashevskiy
---
arch/powerpc/kernel/iommu.c | 28 +---
1 file changed, 25 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index a10642a..b378f78 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc
IODA2:
- pnv_pci_ioda1_tce_invalidate;
- pnv_pci_ioda2_tce_invalidate.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v4:
* changed commit log to explain why this change is needed
---
arch/powerpc/platforms/powernv/pci-ioda.c | 35 ---
arch/powerpc/platforms/powernv/pci.c
to either (depending on .get_table()):
- iommu_table;
- pnv_ioda_pe;
This uses pnv_ioda1_iommu_get_table for both IODA1&2 but IODA2 will
have own pnv_ioda2_iommu_get_table soon and pnv_ioda1_iommu_get_table
will only be used for IODA1.
Signed-off-by: Alexey Kardashevskiy
---
ver.
This renames set_bypass() to take_ownership() as it is not necessarily
just enabling bypassing, it can be something else/more so let's give it
a generic name. The bool parameter is inverted.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/include/asm/iommu.
window if it was created.
The next patch will add corresponding ioctls to VFIO SPAPR TCE driver to
provide necessary support to the userspace.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/tce.h| 22 +
arch/powerpc/platforms/powernv/pci-io
Normally a bitmap from the iommu_table is used to track what TCE entry
is in use. Since we are going to use iommu_table without its locks and
do xchg() instead, it becomes essential not to put bits which are not
implied in the direction flag.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc
platform DDW reset() callback when IOMMU is being disabled
to reset the DMA configuration to its original state.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 135 ++--
include/uapi/linux/vfio.h | 25 ++-
2 files changed
table so VFIO performance in guests
running under PR KVM is expected to be slower than in guests running under
HV KVM or bare metal hosts.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/pseries/iommu.c | 25 +++--
1 file changed, 23 insertions(+), 2 deletions
this patch.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v2:
* added missing __pa() for TCE which was read from the table
---
arch/powerpc/include/asm/iommu.h | 8 +++--
arch/powerpc/kernel/iommu.c | 62
arch/powerpc/platforms/powernv/
There moves locked pages accounting to helpers.
Later they will be reused for Dynamic DMA windows (DDW).
While we are here, update the comment explaining why RLIMIT_MEMLOCK
might be required to be bigger than the guest RAM.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio
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
---
arch/powerpc/kernel/iommu.c | 36 +---
1 file changed, 29 insertions(+), 7 deletions(-)
diff
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
---
drivers/vfio
acks to fall back to
tce_build_pSeriesLP/tce_free_pSeriesLP if FW_FEATURE_MULTITCE is not
present. The reason for this is we still have to support "multitce=off"
boot parameter in disable_multitce() and we do not want to walk through
all IOMMU tables in the system and replace "multi" callbacks
gets
maximum performance.
Please comment. Thanks!
Changes:
v2:
* added missing __pa() in "powerpc/powernv: Release replaced TCE"
* reposted to make some noise :)
Alexey Kardashevskiy (13):
powerpc/iommu: Check that TCE page size is equal to it_page_size
powerpc/powernv: Make invalidate(
here is
no much sense in caching RTAS tokens in CPU-endian.
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v2:
* updated commit log
* fixed definition of ddw_query_response and ddw_create_response
---
arch/powerpc/platforms/pseries/iommu.c | 38 ++
1 file c
On 09/15/2014 07:18 PM, Michael Ellerman wrote:
> On Mon, 2014-09-15 at 18:41 +1000, Alexey Kardashevskiy wrote:
>> On 09/09/2014 09:22 PM, Alexey Kardashevskiy wrote:
>>> rtas_call() accepts and returns values in CPU endianness.
>
> Sounds right.
>
>>> of_rea
On 09/09/2014 09:22 PM, Alexey Kardashevskiy wrote:
> rtas_call() accepts and returns values in CPU endianness.
>
> of_read_number() accepts big-endian values but create.addr_hi/lo returned
> by rtas_call() are in CPU endiannes.
>
> The dynamic_dma_window_prop struct defines al
_prop {
__be32 liobn; /* tce table number */
__be64 dma_base; /* address hi,lo */
__be32 tce_shift; /* ilog2(tce_page_size) */
__be32 window_shift; /* ilog2(tce_window_size) */
};
Cc: Benjamin Herrenschmidt
Cc: Alexander Graf
Signed-off-by: A
-by: Alexey Kardashevskiy
---
arch/powerpc/kernel/iommu.c | 28 +---
1 file changed, 25 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index a10642a..b378f78 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc
IODA2:
- pnv_pci_ioda1_tce_invalidate;
- pnv_pci_ioda2_tce_invalidate.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 35 ---
arch/powerpc/platforms/powernv/pci.c | 31 ---
arch/powerpc/platforms/powernv/pci.h | 13 ++
gets
maximum performance.
Please comment. Thanks!
Alexey Kardashevskiy (13):
powerpc/iommu: Check that TCE page size is equal to it_page_size
powerpc/powernv: Make invalidate() a callback
powerpc/spapr: vfio: Implement spapr_tce_iommu_ops
powerpc/powernv: Convert/move set_bypass()
this patch.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 8 +++--
arch/powerpc/kernel/iommu.c | 62
arch/powerpc/platforms/powernv/pci.c | 40 +++
3 files changed, 67 insertions(+), 43 deletions(-)
di
ver.
This renames set_bypass() to take_ownership() as it is not necessarily
just enabling bypassing, it can be something else/more so let's give it
a generic name. The bool parameter is inverted.
Signed-off-by: Alexey Kardashevskiy
Reviewed-by: Gavin Shan
---
arch/powerpc/include/asm/iommu.
Normally a bitmap from the iommu_table is used to track what TCE entry
is in use. Since we are going to use iommu_table without its locks and
do xchg() instead, it becomes essential not to put bits which are not
implied in the direction flag.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc
table so VFIO performance in guests
running under PR KVM is expected to be slower than in guests running under
HV KVM or bare metal hosts.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/pseries/iommu.c | 25 +++--
1 file changed, 23 insertions(+), 2 deletions
acks to fall back to
tce_build_pSeriesLP/tce_free_pSeriesLP if FW_FEATURE_MULTITCE is not
present. The reason for this is we still have to support "multitce=off"
boot parameter in disable_multitce() and we do not want to walk through
all IOMMU tables in the system and replace "multi" callbacks
window if it was created.
The next patch will add corresponding ioctls to VFIO SPAPR TCE driver to
provide necessary support to the userspace.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/tce.h| 22 +
arch/powerpc/platforms/powernv/pci-io
to either (depending on .get_table()):
- iommu_table;
- pnv_ioda_pe;
This uses pnv_ioda1_iommu_get_table for both IODA1&2 but IODA2 will
have own pnv_ioda2_iommu_get_table soon and pnv_ioda1_iommu_get_table
will only be used for IODA1.
Signed-off-by: Alexey Kardashevskiy
---
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
---
drivers/vfio
platform DDW reset() callback when IOMMU is being disabled
to reset the DMA configuration to its original state.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/vfio_iommu_spapr_tce.c | 135 ++--
include/uapi/linux/vfio.h | 25 ++-
2 files changed
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
---
arch/powerpc/kernel/iommu.c | 36 +---
1 file changed, 29 insertions(+), 7 deletions(-)
diff
There moves locked pages accounting to helpers.
Later they will be reused for Dynamic DMA windows (DDW).
While we are here, update the comment explaining why RLIMIT_MEMLOCK
might be required to be bigger than the guest RAM.
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio
On 08/14/2014 11:40 PM, Alexander Graf wrote:
>
> On 14.08.14 07:13, Aneesh Kumar K.V wrote:
>> Alexey Kardashevskiy writes:
>>
>>> fc95ca7284bc54953165cba76c3228bd2cdb9591 claims that there is no
>>> functional change but this is not true as it calls get_orde
).
Suggested-by: Paul Mackerras
Cc: Alexander Graf
Cc: Aneesh Kumar K.V
Cc: Joonsoo Kim
Cc: Benjamin Herrenschmidt
Signed-off-by: Alexey Kardashevskiy
---
Changes:
v2:
* s/ilog2/order_base_2/
* removed cc: as I got wrong impression that v3.16 is
broken
---
arch/powerpc/kvm/book3s_hv_builtin.c
: Alexander Graf
Cc: Aneesh Kumar K.V
Cc: Joonsoo Kim
Cc: Benjamin Herrenschmidt
Cc:
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/kvm/book3s_hv_builtin.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/kvm/book3s_hv_builtin.c
b/arch/powerpc/kvm
On 07/30/2014 08:31 PM, Davidlohr Bueso wrote:
> On Wed, 2014-07-30 at 19:28 +1000, Alexey Kardashevskiy wrote:
>> This adds 2 helpers to change the locked_vm counter:
>> - try_increase_locked_vm - may fail if new locked_vm value will be greater
>> than the
if it can lock DMA memory
or PPC-KVM can use it to check if it can lock memory for TCE tables.
Signed-off-by: Alexey Kardashevskiy
---
include/linux/mm.h | 3 +++
mm/mlock.c | 49 +
2 files changed, 52 insertions(+)
diff --git a/include
On 07/23/2014 06:11 AM, Tejun Heo wrote:
> Hello,
>
> Can you please test the following patch?
Tested-by: Alexey Kardashevskiy
on POWER8 + IBM IPR SCSI.
>
> diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
> index d19c37a7..773f4e6 100644
> ---
On 07/08/2014 08:28 PM, Junichi Nomura wrote:
> On 07/02/14 04:39, Mike Snitzer wrote:
>> On Mon, Jun 30 2014 at 6:30am -0400,
>> Paul Mackerras wrote:
>>
>>> I have a machine on which 3.15 usually fails to boot, and 3.14 boots
>>> every time. The machine is a POWER8 2-socket server with 20 core
On 06/26/2014 07:12 AM, Alexander Graf wrote:
>
> On 06.06.14 02:20, Alexey Kardashevskiy wrote:
>> On 06/05/2014 09:57 PM, Alexander Graf wrote:
>>> On 05.06.14 09:25, Alexey Kardashevskiy wrote:
>>>> This reserves 2 capability numbers.
>>>>
On 06/25/2014 07:54 AM, Benjamin Herrenschmidt wrote:
> On Wed, 2014-06-25 at 00:33 +1000, Alexey Kardashevskiy wrote:
>>
>> I do not understand why @val is considered LE here and need to be
>> converted
>> to CPU. Really. I truly believe it should be cpu_to_le32().
On 06/25/2014 12:43 AM, Alex Williamson wrote:
> On Wed, 2014-06-25 at 00:33 +1000, Alexey Kardashevskiy wrote:
>> On 06/25/2014 12:21 AM, Alex Williamson wrote:
>>> On Tue, 2014-06-24 at 15:22 +0200, Alexander Graf wrote:
>>>> On 24.06.14 15:01, Alexey Kardashevskiy
On 06/25/2014 12:21 AM, Alex Williamson wrote:
> On Tue, 2014-06-24 at 15:22 +0200, Alexander Graf wrote:
>> On 24.06.14 15:01, Alexey Kardashevskiy wrote:
>>> On 06/24/2014 10:52 PM, Alexander Graf wrote:
>>>> On 24.06.14 14:50, Alexey Kardashevskiy wrote:
>>&
On 06/24/2014 10:52 PM, Alexander Graf wrote:
>
> On 24.06.14 14:50, Alexey Kardashevskiy wrote:
>> On 06/24/2014 08:41 PM, Alexander Graf wrote:
>>> On 24.06.14 12:11, Alexey Kardashevskiy wrote:
>>>> On 06/21/2014 09:12 AM, Benjamin Herrenschmidt wrote:
>&g
On 06/24/2014 08:41 PM, Alexander Graf wrote:
>
> On 24.06.14 12:11, Alexey Kardashevskiy wrote:
>> On 06/21/2014 09:12 AM, Benjamin Herrenschmidt wrote:
>>> On Thu, 2014-06-19 at 21:21 -0600, Alex Williamson wrote:
>>>
>>>> Working on big endian being
write32.
Ping?
We need to make a decision whether to move those xxx_native() helpers
somewhere (where?) or leave the patch as is (as we figured out that
iowriteXX functions implement barriers and we cannot just use raw
accessors) and fix commit log to explain everything.
Thanks!
>> Thanks,
>
On 06/20/2014 01:21 PM, Alex Williamson wrote:
> On Thu, 2014-06-19 at 13:48 +1000, Alexey Kardashevskiy wrote:
>> On 06/19/2014 11:50 AM, Alexey Kardashevskiy wrote:
>>> On 06/19/2014 10:50 AM, Alexey Kardashevskiy wrote:
>>>> On 06/19/2014 04:35 AM, Alex Williamso
On 06/19/2014 03:30 PM, bharat.bhus...@freescale.com wrote:
>
>
>> -Original Message-
>> From: Linuxppc-dev [mailto:linuxppc-dev-
>> bounces+bharat.bhushan=freescale@lists.ozlabs.org] On Behalf Of Alexey
>> Kardashevskiy
>> Sent: Thursday, June 19,
On 06/19/2014 11:50 AM, Alexey Kardashevskiy wrote:
> On 06/19/2014 10:50 AM, Alexey Kardashevskiy wrote:
>> On 06/19/2014 04:35 AM, Alex Williamson wrote:
>>> On Wed, 2014-06-18 at 21:36 +1000, Alexey Kardashevskiy wrote:
>>>> VFIO exposes BARs to user space as
On 06/19/2014 10:50 AM, Alexey Kardashevskiy wrote:
> On 06/19/2014 04:35 AM, Alex Williamson wrote:
>> On Wed, 2014-06-18 at 21:36 +1000, Alexey Kardashevskiy wrote:
>>> VFIO exposes BARs to user space as a byte stream so userspace can
>>> read it using pread()/pwr
On 06/19/2014 10:50 AM, Alexey Kardashevskiy wrote:
> On 06/19/2014 04:35 AM, Alex Williamson wrote:
>> On Wed, 2014-06-18 at 21:36 +1000, Alexey Kardashevskiy wrote:
>>> VFIO exposes BARs to user space as a byte stream so userspace can
>>> read it using pread()/pwr
On 06/19/2014 04:35 AM, Alex Williamson wrote:
> On Wed, 2014-06-18 at 21:36 +1000, Alexey Kardashevskiy wrote:
>> VFIO exposes BARs to user space as a byte stream so userspace can
>> read it using pread()/pwrite(). Since this is a byte stream, VFIO should
>> not do byte swapp
lpers take
native endian values and do swapping at the moment of writing to a PCI
register using one of "store byte-reversed" instructions.
Suggested-by: Benjamin Herrenschmidt
Signed-off-by: Alexey Kardashevskiy
---
drivers/vfio/pci/vfio_pci_rdwr.c | 20
1 file ch
On 06/06/2014 06:44 PM, Alexey Kardashevskiy wrote:
> Here is what I got for powernv in order to support variable page size
> in iommu_table.
>
> I am very uncertain about Patch #4 "Add @it_owner to iommu_table struct"
> and wonder if there any better way to get PE from
This makes use of iommu_table::it_page_shift instead of TCE_SHIFT and
TCE_RPN_SHIFT hardcoded values.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/powernv/pci.c
b
There are going to be other callbacks which are going to be used as
function parameters so change the existing set_bypass() callback to be
a type.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch
Since a TCE page size can be other than 4K, make it configurable for
P5IOC2 and IODA PHBs.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 5 +++--
arch/powerpc/platforms/powernv/pci-p5ioc2.c | 3 ++-
arch/powerpc/platforms/powernv/pci.c| 6
defines an empty iommu_owner struct. This adds it to pnv_ioda_pe
struct and replaces container_of(tbl) with container_of(tbl->it_owner).
This adds an @owner parameter to pnv_pci_setup_iommu_table().
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 6 ++
a
This implements pnv_pci_ioda(1|2)_tce_invalidate as a callback
of iommu_table to simplify code structure.
This registers invalidate() callbacks for IODA1 and IODA2.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/include/asm/iommu.h| 4
arch/powerpc/platforms/powernv/pci
Here is what I got for powernv in order to support variable page size
in iommu_table.
I am very uncertain about Patch #4 "Add @it_owner to iommu_table struct"
and wonder if there any better way to get PE from iommu_table.
Please comment. Thanks.
Alexey Kardashevskiy (6):
powerpc/po
This fixes IODA1/2 to use it_page_shift as it may be bigger than 4K.
This changes involved constant values to use "ull" modifier.
Signed-off-by: Alexey Kardashevskiy
---
arch/powerpc/platforms/powernv/pci-ioda.c | 16 +---
1 file changed, 9 insertions(+), 7 deletions(-)
On 06/05/2014 09:57 PM, Alexander Graf wrote:
>
> On 05.06.14 09:25, Alexey Kardashevskiy wrote:
>> This reserves 2 capability numbers.
>>
>> This implements an extended version of KVM_CREATE_SPAPR_TCE_64 ioctl.
>>
>> Please advise how to proceed with these pa
On 06/05/2014 10:30 PM, Benjamin Herrenschmidt wrote:
> On Thu, 2014-06-05 at 13:56 +0200, Alexander Graf wrote:
>> What if we ask user space to give us a pointer to user space allocated
>> memory along with the TCE registration? We would still ask user space to
>> only use the returned fd for TC
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