Hi Zhenzhong,
On 11/9/20 10:27 AM, Zhenzhong Duan wrote:
+intel iommu maintainers,
Can anyone help review this patch? Thanks
Zhenzhong
On Wed, Nov 4, 2020 at 4:15 PM Zhenzhong Duan wrote:
"intel_iommu=off" command line is used to disable iommu and iommu is force
enabled in a tboot system.
Hi Zhenzhong,
On 11/4/20 4:19 PM, Zhenzhong Duan wrote:
no_platform_optin is redundant with dmar_disabled and it's only used in
platform_optin_force_iommu(), remove it and use dmar_disabled instead.
It's actually not.
If CONFIG_INTEL_IOMMU_DEFAULT_ON is not set, we will get "dmar_disable =
Hi Joerg,
On 11/3/20 9:23 PM, Joerg Roedel wrote:
Hi Baolu,
On Mon, Oct 26, 2020 at 02:30:08PM +0800, Lu Baolu wrote:
@@ -264,7 +266,8 @@ int iommu_probe_device(struct device *dev)
*/
iommu_alloc_default_domain(group, dev);
- if (group->default_domain)
+ if (gr
Hi Alex,
On 10/31/20 5:06 AM, Alex Williamson wrote:
On Fri, 30 Oct 2020 06:16:28 +
"Tian, Kevin" wrote:
From: Lu Baolu
Sent: Friday, October 30, 2020 12:58 PM
With the IOMMU driver registering iommu_ops for the mdev_bus, the
IOMMU
operations on an mdev could be done in th
On 11/2/20 7:52 PM, Tvrtko Ursulin wrote:
On 02/11/2020 02:00, Lu Baolu wrote:
Hi Tvrtko,
On 10/12/20 4:44 PM, Tvrtko Ursulin wrote:
On 29/09/2020 01:11, Lu Baolu wrote:
Hi Tvrtko,
On 9/28/20 5:44 PM, Tvrtko Ursulin wrote:
On 27/09/2020 07:34, Lu Baolu wrote:
Hi,
The previous post
Hi Tvrtko,
On 10/12/20 4:44 PM, Tvrtko Ursulin wrote:
On 29/09/2020 01:11, Lu Baolu wrote:
Hi Tvrtko,
On 9/28/20 5:44 PM, Tvrtko Ursulin wrote:
On 27/09/2020 07:34, Lu Baolu wrote:
Hi,
The previous post of this series could be found here.
https://lore.kernel.org/linux-iommu
-off-by: Liu, Yi L
Signed-off-by: Yi Sun
Cc: sta...@ver.kernel.org
Acked-by: Lu Baolu
Best regards,
baolu
---
drivers/iommu/intel/svm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index 7584669..3242ebd 100644
igned-off-by: Yi Sun
Cc: sta...@ver.kernel.org
Acked-by: Lu Baolu
Best regards,
baolu
---
drivers/iommu/intel/svm.c | 6 ++
1 file changed, 6 insertions(+)
diff --git a/drivers/iommu/intel/svm.c b/drivers/iommu/intel/svm.c
index f1861fa..7584669 100644
--- a/drivers/iommu/intel/svm
With the IOMMU driver registering iommu_ops for the mdev_bus, the IOMMU
operations on an mdev could be done in the same way as any normal device
(for example, PCI/PCIe). There's no need to distinguish an mdev from
others for iommu operations. Remove the unnecessary code.
Signed-off-by: Lu Baolu
regards,
baolu
Lu Baolu (5):
vfio/mdev: Register mdev bus earlier during boot
iommu: Use bus iommu ops for aux related callback
iommu/vt-d: Make some static functions global
iommu/vt-d: Add iommu_ops support for subdevice bus
vfio/type1: Use mdev bus iommu_ops for IOMMU callbacks
drivers
The aux-domain apis were designed for macro driver where the subdevices
are created and used inside a device driver. Use the device's bus iommu
ops instead of that in iommu domain for various callbacks.
Signed-off-by: Lu Baolu
---
drivers/iommu/iommu.c | 16 ++--
1 file changed, 10
Move mdev bus registration earlier than IOMMU probe processing so that
the IOMMU drivers could be able to set iommu_ops for the mdev bus. This
only applies when vfio-mdev module is setected to be built-in.
Signed-off-by: Lu Baolu
---
drivers/vfio/mdev/mdev_core.c | 4
1 file changed, 4
So that they could be used in other files as well. No functional changes.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 74 +++--
include/linux/intel-iommu.h | 49
2 files changed, 62 insertions(+), 61 deletions(-)
diff --git
as an
aux-domain; Otherwise, it will be attached to the parent as a primary
domain.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/Kconfig | 13
drivers/iommu/intel/Makefile | 1 +
drivers/iommu/intel/iommu.c | 5 ++
drivers/iommu/intel/siov.c | 119
The IOMMU core has support for deferring the attachment of default domain
to device. Fix a missed deferred attaching check in iommu_probe_device().
Fixes: cf193888bfbd3 ("iommu: Move new probe_device path to separate function")
Cc: sta...@vger.kernel.org # v5.8+
Signed-off-by
Hi Bartosz,
On 10/14/20 3:18 PM, Bartosz Golaszewski wrote:
On Wed, Oct 14, 2020 at 2:49 AM Lu Baolu wrote:
On 10/13/20 3:30 PM, Bartosz Golaszewski wrote:
From: Bartosz Golaszewski
Since commit c40c1018 ("iommu/vt-d: Gracefully handle DMAR units
with no supported address w
szewski
With commit title adjusted to "iommu/vt-d: Don't dereference
iommu_device if IOMMU_API is not built",
Acked-by: Lu Baolu
Best regards,
baolu
---
drivers/iommu/intel/dmar.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/dmar.c
Hi,
On 10/12/20 8:31 PM, Bartosz Golaszewski wrote:
From: Bartosz Golaszewski
Since commit c40c1018 ("iommu/vt-d: Gracefully handle DMAR units
with no supported address widths") dmar.c needs struct iommu_device to
be defined. We need to unconditionally select IOMMU_API when DMAR_TABLE
is
Hi Tvrtko,
On 10/12/20 4:44 PM, Tvrtko Ursulin wrote:
On 29/09/2020 01:11, Lu Baolu wrote:
Hi Tvrtko,
On 9/28/20 5:44 PM, Tvrtko Ursulin wrote:
On 27/09/2020 07:34, Lu Baolu wrote:
Hi,
The previous post of this series could be found here.
https://lore.kernel.org/linux-iommu
Hi Felix,
On 10/10/20 4:02 PM, FelixCuioc wrote:
BIOS allocate reserved memory ranges that may be DMA targets.
BIOS may report each such reserved memory region through the
RMRR structures,along with the devices that requires access to
the specified reserved memory region.
The purpose of this
Hi Joerg,
On 2020/10/1 20:17, Joerg Roedel wrote:
Hi Baolu,
On Tue, Sep 29, 2020 at 08:11:35AM +0800, Lu Baolu wrote:
I have no preference. It depends on which patch goes first. Let the
maintainers help here.
No preference on my side, except that it is too late for this now to
make
Hi Tvrtko,
On 9/28/20 5:44 PM, Tvrtko Ursulin wrote:
On 27/09/2020 07:34, Lu Baolu wrote:
Hi,
The previous post of this series could be found here.
https://lore.kernel.org/linux-iommu/20200912032200.11489-1-baolu...@linux.intel.com/
This version introduce a new patch [4/7] to fix
table pages can be freed. This way we can still batch
ioTLB free operations and handle the freelists.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 29 +--
drivers/iommu/intel/iommu.c | 55 -
include/linux
From: Tom Murphy
Convert the intel iommu driver to the dma-iommu api. Remove the iova
handling and reserve region code from the intel iommu driver.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/Kconfig | 1 +
drivers/iommu/intel/iommu.c | 742
From: Tom Murphy
Add a iommu_dma_free_cpu_cached_iovas function to allow drivers which
use the dma-iommu ops to free cached cpu iovas.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 9 +
include/linux/dma-iommu.h | 8
2 files changed, 17
The iommu-dma constrains IOVA allocation based on the domain geometry
that the driver reports. Update domain geometry everytime a domain is
attached to or detached from a device.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 16 ++--
1 file changed, 14 insertions(+), 2
From: Tom Murphy
Allow the dma-iommu api to use bounce buffers for untrusted devices.
This is a copy of the intel bounce buffer code.
Signed-off-by: Tom Murphy
Co-developed-by: Lu Baolu
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 163 +++---
1
depends on the previous behaviour of the Intel iommu driver
which would return the same number of elements in the output list as in
the input list.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 27 +++
1 file changed, 27 insertions
...@linux.intel.com/
There aren't any other changes.
Please help to test and review.
Best regards,
baolu
Lu Baolu (3):
iommu: Add quirk for Intel graphic devices in map_sg
iommu/vt-d: Update domain geometry in iommu_ops.at(de)tach_dev
iommu/vt-d: Cleanup after converting to dma-iommu ops
Tom Murphy
ock(>lock);
[ 12.704158]
[ 12.704164] lock(device_domain_lock);
[ 12.704174]
*** DEADLOCK ***
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/i
Hi Joerg,
On 9/24/20 5:55 PM, Joerg Roedel wrote:
On Tue, Sep 22, 2020 at 02:10:37PM +0800, Lu Baolu wrote:
Hi Jorge and Alex,
A description of this patch series could be found here.
https://lore.kernel.org/linux-iommu/20200901033422.22249-1-baolu...@linux.intel.com/
Hmm, I am wondering
On 9/22/20 7:05 PM, Robin Murphy wrote:
With the previous version of the series I hit a problem on Ivybridge
where apparently the dma engine width is not respected. At least
that is my layman interpretation of the errors. From the older thread:
<3> [209.526605] DMAR: intel_iommu_map: iommu
Replace iommu_aux_at(de)tach_device() with iommu_at(de)tach_subdev_group().
Signed-off-by: Lu Baolu
---
drivers/vfio/vfio_iommu_type1.c | 43 +
1 file changed, 6 insertions(+), 37 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio
With subdevice information opt-in through iommu_ops.aux_at(de)tach_dev()
interfaces, the vendor iommu driver is able to learn the knowledge about
the relationships between the subdevices and the aux-domains. Implement
is_aux_domain() support based on the relationship knowledges.
Signed-off-by: Lu
Lu Baolu (5):
iommu: Add optional subdev in aux_at(de)tach ops
iommu: Add iommu_at(de)tach_subdev_group()
iommu: Add iommu_aux_get_domain_for_dev()
vfio/type1: Use iommu_aux_at(de)tach_group() APIs
iommu/vt-d: Add is_aux_domain support
drivers/iommu/intel/iommu.c | 139
Hi Logan,
On 9/21/20 11:48 PM, Logan Gunthorpe wrote:
On 2020-09-20 12:36 a.m., Lu Baolu wrote:
Hi Logan,
On 2020/9/19 4:47, Logan Gunthorpe wrote:
Hi Lu,
On 2020-09-11 9:21 p.m., Lu Baolu wrote:
Tom Murphy has almost done all the work. His latest patch series was
posted here.
https
Hi Logan,
On 2020/9/19 4:47, Logan Gunthorpe wrote:
Hi Lu,
On 2020-09-11 9:21 p.m., Lu Baolu wrote:
Tom Murphy has almost done all the work. His latest patch series was
posted here.
https://lore.kernel.org/linux-iommu/20200903201839.7327-1-murph...@tcd.ie/
Thanks a lot!
This series
Hi Tvrtko,
On 9/14/20 4:04 PM, Tvrtko Ursulin wrote:
Hi,
On 12/09/2020 04:21, Lu Baolu wrote:
Tom Murphy has almost done all the work. His latest patch series was
posted here.
https://lore.kernel.org/linux-iommu/20200903201839.7327-1-murph...@tcd.ie/
Thanks a lot!
This series is a follow
Hi Alex,
On 9/11/20 6:05 AM, Alex Williamson wrote:
On Tue, 1 Sep 2020 11:34:22 +0800
Lu Baolu wrote:
With subdevice information opt-in through iommu_ops.aux_at(de)tach_dev()
interfaces, the vendor iommu driver is able to learn the knowledge about
the relationships between the subdevices
Hi Alex,
On 9/11/20 6:05 AM, Alex Williamson wrote:
On Tue, 1 Sep 2020 11:34:19 +0800
Lu Baolu wrote:
This adds two new APIs for the use cases like vfio/mdev where subdevices
derived from physical devices are created and put in an iommu_group. The
new IOMMU API interfaces mimic
Some cleanups after converting the driver to use dma-iommu ops.
- Remove nobounce option;
- Cleanup and simplify the path in domain mapping.
Signed-off-by: Lu Baolu
---
.../admin-guide/kernel-parameters.txt | 5 --
drivers/iommu/intel/iommu.c | 90
depends on the previous behaviour of the Intel iommu driver
which would return the same number of elements in the output list as in
the input list.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 27 +++
1 file changed, 27 insertions
From: Tom Murphy
Allow the dma-iommu api to use bounce buffers for untrusted devices.
This is a copy of the intel bounce buffer code.
Signed-off-by: Tom Murphy
Co-developed-by: Lu Baolu
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 163 +++---
1
From: Tom Murphy
Convert the intel iommu driver to the dma-iommu api. Remove the iova
handling and reserve region code from the intel iommu driver.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/Kconfig | 1 +
drivers/iommu/intel/iommu.c | 742
table pages can be freed. This way we can still batch
ioTLB free operations and handle the freelists.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 30 ++--
drivers/iommu/intel/iommu.c | 55 -
include
From: Tom Murphy
Add a iommu_dma_free_cpu_cached_iovas function to allow drivers which
use the dma-iommu ops to free cached cpu iovas.
Signed-off-by: Tom Murphy
Signed-off-by: Lu Baolu
---
drivers/iommu/dma-iommu.c | 9 +
include/linux/dma-iommu.h | 8
2 files changed, 17
. Fix several bugs in patch "iommu: Allow the dma-iommu api to use
bounce buffers" to make the bounce buffer work for untrusted devices.
3. Several cleanups in iommu/vt-d driver after the conversion.
Please review and test.
Best regards,
baolu
Lu Baolu (2):
iommu: Add quirk for Int
On 2020/9/9 15:06, Christoph Hellwig wrote:
On Wed, Sep 09, 2020 at 09:43:09AM +0800, Lu Baolu wrote:
+ /*
+* The Intel graphic device driver is used to assume that the
returned
+* sg list is not combound. This blocks the efforts of converting
the
This adds pointless
On 2020/9/9 15:05, Christoph Hellwig wrote:
+static inline void iommu_dma_free_cpu_cached_iovas(unsigned int cpu,
+ struct iommu_domain
*domain)
This adds a crazy long line. Which is rather pointless as other
bits of code in the patch use the
On 9/4/20 4:18 AM, Tom Murphy wrote:
+static int intel_iommu_needs_bounce_buffer(struct device *d)
+{
+ return !intel_no_bounce && dev_is_pci(d) && to_pci_dev(d)->untrusted;
+}
+
+
static void intel_iommu_probe_finalize(struct device *dev)
{
- struct iommu_domain *domain;
+
Hi Christoph,
On 9/8/20 2:23 PM, Christoph Hellwig wrote:
On Tue, Sep 08, 2020 at 02:04:53PM +0800, Lu Baolu wrote:
Do you mind telling where can I find Marek's series?
[PATCH v10 00/30] DRM: fix struct sg_table nents vs. orig_nents misuse
on various lists including the iommu one
On 9/4/20 4:18 AM, Tom Murphy wrote:
to dma-iommu ops
Add a iommu_dma_free_cpu_cached_iovas function to allow drivers which
use the dma-iommu ops to free cached cpu iovas.
Signed-off-by: Tom Murphy
---
drivers/iommu/dma-iommu.c | 9 +
include/linux/dma-iommu.h | 3 +++
2 files
On 2020/9/8 14:23, Christoph Hellwig wrote:
On Tue, Sep 08, 2020 at 02:04:53PM +0800, Lu Baolu wrote:
Do you mind telling where can I find Marek's series?
[PATCH v10 00/30] DRM: fix struct sg_table nents vs. orig_nents misuse
on various lists including the iommu one.
Get it. Thank you
://linuxplumbersconf.org/event/7/contributions/846/
As far as I can remember everyone seemed happy with that solution. I
won't be working on this though as I don't have any more time to
dedicate to this. It seems Lu Baolu will take over this.
I'm absolutely again passing a flag. Tha just invites
Hi Kevin,
On 9/4/20 10:16 AM, Tian, Kevin wrote:
From: Lu Baolu
Sent: Friday, September 4, 2020 9:03 AM
If there are multiple NUMA domains but the RHSA is missing in ACPI/DMAR
table, we could default to the device NUMA domain as fall back. This could
also benefit a vIOMMU use case where only
Cc: Kevin Tian
Cc: Ashok Raj
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 37 +++--
1 file changed, 35 insertions(+), 2 deletions(-)
Change log:
v1->v2:
- Add a comment as suggested by Kevin.
https://lore.kernel.org/linux-io
Hi Felix,
On 9/2/20 11:24 AM, FelixCui-oc wrote:
hi baolu,
So you have a hidden device (invisible to host kernel). But you need to
setup some identity mappings for this device, so that the firmware
could keep working, right?
The platform designs this by putting that range in the RMRR
iommu/vt-d: Use dev_iommu_priv_get/set()")
Reported-by: Torsten Hilbrich
Reported-by: Wendy Wang
Link:
https://lore.kernel.org/linux-iommu/96717683-70be-7388-3d2f-61131070a...@secunet.com/
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 100
Hi,
On 9/2/20 5:28 AM, Jacob Pan wrote:
On Mon, 24 Aug 2020 10:24:11 +0800
Lu Baolu wrote:
Hi Jacob,
On 8/22/20 12:35 PM, Jacob Pan wrote:
ioasid_set was introduced as an arbitrary token that are shared by a
group of IOASIDs. For example, if IOASID #1 and #2 are allocated
via the same
*发件人:* Lu Baolu
*发送时间:* 2020年9月1日 14:12:34
*收件人:* FelixCui-oc; Joerg Roedel; io...@lists.linux-foundation.org;
linux-kernel@vger.kernel.org; David Woodhouse; Dan Carpenter;
kbu...@lists.01.org
*抄送:* baolu...@linux.intel.com; CobeChen-oc; RaymondPang-oc; Tony W
Wang-oc
*主题
Hi Felix,
On 8/27/20 6:02 PM, FelixCuioc wrote:
After acpi device in RMRR is detected,it is necessary
to establish a mapping for these devices.
In acpi_device_create_direct_mappings(),create a mapping
for the acpi device in RMRR.
Add a helper to achieve the acpi namespace device can
access the
Hi Felix,
On 8/27/20 6:02 PM, FelixCuioc wrote:
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR.
Signed-off-by:
domain is aux-domain for a device.
- Return domain only if the domain is aux-domain in
iommu_aux_get_domain_for_dev().
Lu Baolu (5):
iommu: Add optional subdev in aux_at(de)tach ops
iommu: Add iommu_at(de)tach_subdev_group()
iommu: Add iommu_aux_get_domain_for_dev()
vfio/type1: Use
ted-by: Alex Williamson
Link: https://lore.kernel.org/linux-iommu/20200708130749.1b1e1...@x1.home/
Signed-off-by: Lu Baolu
---
drivers/iommu/iommu.c | 18 ++
include/linux/iommu.h | 20
2 files changed, 38 insertions(+)
diff --git a/drivers/iommu/iommu.c b/driv
With subdevice information opt-in through iommu_ops.aux_at(de)tach_dev()
interfaces, the vendor iommu driver is able to learn the knowledge about
the relationships between the subdevices and the aux-domains. Implement
is_aux_domain() support based on the relationship knowledges.
Signed-off-by: Lu
Replace iommu_aux_at(de)tach_device() with iommu_at(de)tach_subdev_group().
Signed-off-by: Lu Baolu
---
drivers/vfio/vfio_iommu_type1.c | 43 +
1 file changed, 6 insertions(+), 37 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio
-in.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 10 ++
drivers/iommu/iommu.c | 4 ++--
include/linux/iommu.h | 6 --
3 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index bce158468abf
the _attach_group() interfaces while the _attach_device()
interfaces are relegated to special cases.
Link: https://lore.kernel.org/linux-iommu/20200730134658.44c57...@x1.home/
Link: https://lore.kernel.org/linux-iommu/20200730151703.5daf8...@x1.home/
Signed-off-by: Lu Baolu
---
drivers/iommu
3) /* page-level write through */
#define IOMMU_SVA_VTD_GPASID_EMTE (1 << 4) /* extended mem type enable */
#define IOMMU_SVA_VTD_GPASID_CD (1 << 5) /* PASID-level cache
disable */
+#define IOMMU_SVA_VTD_GPASID_LAST (1 << 6)
__u64 flags;
__u32
Hi Thomas,
On 2020/8/31 15:10, Thomas Gleixner wrote:
On Mon, Aug 31 2020 at 08:51, Lu Baolu wrote:
On 8/26/20 7:16 PM, Thomas Gleixner wrote:
This is the second version of providing a base to support device MSI (non
PCI based) and on top of that support for IMS (Interrupt Message Storm
Hi Kevin,
Thanks a lot for looking at my patch.
On 8/28/20 10:13 AM, Tian, Kevin wrote:
From: Lu Baolu
Sent: Thursday, August 27, 2020 1:57 PM
If there are multiple NUMA domains but the RHSA is missing in ACPI/DMAR
table, we could default to the device NUMA domain as fall back. This also
Hi Thomas,
On 8/26/20 7:16 PM, Thomas Gleixner wrote:
This is the second version of providing a base to support device MSI (non
PCI based) and on top of that support for IMS (Interrupt Message Storm)
based devices in a halfways architecture independent way.
After applying this patch series,
)
Cc: Andy Lutomirski
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Ashok Raj
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/irq_remapping.c | 10 --
1 file changed, 8 insertions(+), 2 deletions(-)
Change log:
v1->v2:
- v1 posted here
https://lore.kernel.org/linux-iommu/20200826025825
Hi,
On 8/27/20 1:39 PM, Tian, Kevin wrote:
From: Lu Baolu
Sent: Thursday, August 27, 2020 12:25 PM
The VT-d spec requires (10.4.4 Global Command Register, GCMD_REG
General
Description) that:
If multiple control fields in this register need to be modified, software
must serialize
Cc: Kevin Tian
Cc: Ashok Raj
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 31 +--
1 file changed, 29 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index e0516d64d7a3..bce158468abf 100644
Hi Kevin,
On 8/26/20 1:29 PM, Tian, Kevin wrote:
From: Lu Baolu
Sent: Wednesday, August 26, 2020 10:58 AM
The VT-d spec requires (10.4.4 Global Command Register, GCMD_REG
General
Description) that:
If multiple control fields in this register need to be modified, software
must serialize
and CFI are done in one
write. We need to do two separate writes with STS checking after each.
Fixes: af8d102f999a4 ("x86/intel/irq_remapping: Clean up x2apic opt-out
security warning mess")
Cc: Andy Lutomirski
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Ashok Raj
Signed-off-by: Lu Baolu
---
dri
and CFI are done in one
write. We need to do two separate writes with STS checking after each.
Fixes: af8d102f999a4 ("x86/intel/irq_remapping: Clean up x2apic opt-out
security warning mess")
Cc: Andy Lutomirski
Cc: Jacob Pan
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/irq_remap
Hi Felix,
On 8/18/20 10:44 AM, FelixCuioc wrote:
Some ACPI devices need to issue dma requests to access
the reserved memory area.BIOS uses the device scope type
ACPI_NAMESPACE_DEVICE in RMRR to report these ACPI devices.
This patch add support for detecting ACPI devices in RMRR.
If you are
Hi Chris,
On 8/24/20 4:35 PM, Chris Wilson wrote:
Quoting Lu Baolu (2020-08-24 07:31:23)
Hi Chris,
On 2020/8/22 2:33, Chris Wilson wrote:
Quoting Lu Baolu (2019-05-25 06:41:28)
This allows the iommu generic layer to allocate a dma domain and
attach it to a device through the iommu api's
Hi Chris,
On 2020/8/22 2:33, Chris Wilson wrote:
Quoting Lu Baolu (2019-05-25 06:41:28)
This allows the iommu generic layer to allocate a dma domain and
attach it to a device through the iommu api's. With all types of
domains being delegated to upper layer, we can remove an internal
flag which
iommu/vt-d: Drop kerneldoc marker from
regular comment",
Reviewed-by: Lu Baolu
Best regards,
baolu
---
drivers/iommu/intel/dmar.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c
index 93e6345f3414..ba47edf03
Hi Jacob,
On 8/22/20 12:35 PM, Jacob Pan wrote:
There can be multiple users of an IOASID, each user could have hardware
contexts associated with the IOASID. In order to align lifecycles,
reference counting is introduced in this patch. It is expected that when
an IOASID is being freed, each user
Hi Jacob,
On 8/22/20 12:35 PM, Jacob Pan wrote:
ioasid_set was introduced as an arbitrary token that are shared by a
group of IOASIDs. For example, if IOASID #1 and #2 are allocated via the
same ioasid_set*, they are viewed as to belong to the same set.
For guest SVA usages, system-wide IOASID
Hi Jacob,
On 2020/8/22 12:35, Jacob Pan wrote:
IOASID is used to identify address spaces that can be targeted by device
DMA. It is a system-wide resource that is essential to its many users.
This document is an attempt to help developers from all vendors navigate
the APIs. At this time, ARM
return 0;
}
Best regards
Felix cui-oc
-邮件原件-----
发件人: Lu Baolu
发送时间: 2020年8月7日 9:08
收件人: FelixCui-oc ; Joerg Roedel ;
io...@lists.linux-foundation.org; linux-kernel@vger.kernel.org; David Woodhouse
抄送: baolu...@linux.intel.com; RaymondPang-oc ;
CobeChen-oc
主题: Re: 答复
he same time?
Best regards,
baolu
Best regards
Felix cui
-邮件原件-
发件人: Lu Baolu
发送时间: 2020年8月6日 10:36
收件人: FelixCui-oc ; Joerg Roedel ;
io...@lists.linux-foundation.org; linux-kernel@vger.kernel.org; David Woodhouse
抄送: baolu...@linux.intel.com; RaymondPang-oc ;
CobeChen-oc
主题: Re:
Hi Felix,
On 8/5/20 3:37 PM, FelixCui-oc wrote:
Hi baolu,
Let me talk about why acpi_device_create_direct_mappings() is
needed and please tell me if there is an error.
Sure. Before that, let me sync my understanding with you. You have an
acpi namespace device in ANDD table,
since the rmrr identity mapping is already done in the iommu core.
Best regards,
baolu
Best regards
Felix cui-oc
-邮件原件-
发件人: Lu Baolu
发送时间: 2020年8月4日 9:12
收件人: FelixCui-oc ; Joerg Roedel ;
io...@lists.linux-foundation.org; linux-kernel@vger.kernel.org;
in probe_acpi_namespace_devices().
Best regards,
baolu
Best regards
Felix cui-oc
-邮件原件-
发件人: FelixCui-oc
发送时间: 2020年8月3日 17:02
收件人: 'Lu Baolu' ; Joerg Roedel ;
io...@lists.linux-foundation.org; linux-kernel@vger.kernel.org; David Woodhouse
抄送: RaymondPang-oc ; CobeChen-oc
主题: 答复: 答复: 答复: [PATCH
the enumeration and setup the
identity mappings. Can you please check why that code doesn't work for
you?
Best regards,
baolu
Best regards
Felix cui
-邮件原件-
发件人: Lu Baolu
发送时间: 2020年8月3日 14:19
收件人: FelixCui-oc ; Joerg Roedel ;
io...@lists.linux-foundation.org; linux-kernel
atch in order to
distinguish acpi device from pci device.
You can refer to the description of type in 8.3.1 device scope
in vt-d spec.
Best regards
FelixCui-oc
-邮件原件-
发件人: Lu Baolu
发送时间: 2020年8月3日 10:32
收件人: FelixCui-oc ; Joerg Roedel ;
io...@lists.linux-foundation.org;
Hi,
On 8/2/20 6:07 PM, FelixCuioc wrote:
Some ACPI devices require access to the specified reserved memory
region.BIOS report the specified reserved memory region through
RMRR structures.Add analysis of ACPI device in RMRR and establish
identity mapping for ACPI device.
Can you please add
Hi Alex,
On 8/1/20 2:14 AM, Alex Williamson wrote:
On Fri, 31 Jul 2020 14:30:03 +0800
Lu Baolu wrote:
Hi Alex,
On 2020/7/30 4:25, Alex Williamson wrote:
On Tue, 14 Jul 2020 13:57:02 +0800
Lu Baolu wrote:
The device driver needs an API to get its aux-domain. A typical usage
scenario
Hi Alex,
On 8/1/20 2:05 AM, Alex Williamson wrote:
On Fri, 31 Jul 2020 13:47:57 +0800
Lu Baolu wrote:
Hi Alex,
On 2020/7/31 3:46, Alex Williamson wrote:
On Wed, 29 Jul 2020 23:34:40 +
"Tian, Kevin" wrote:
From: Alex Williamson
Sent: Thursday, July 30, 2020 4:04 AM
Hi Alex,
On 2020/7/30 4:25, Alex Williamson wrote:
On Tue, 14 Jul 2020 13:57:02 +0800
Lu Baolu wrote:
The device driver needs an API to get its aux-domain. A typical usage
scenario is:
unsigned long pasid;
struct iommu_domain *domain;
struct device *dev = mdev_dev
Hi Alex,
On 2020/7/31 3:46, Alex Williamson wrote:
On Wed, 29 Jul 2020 23:34:40 +
"Tian, Kevin" wrote:
From: Alex Williamson
Sent: Thursday, July 30, 2020 4:04 AM
On Thu, 16 Jul 2020 09:07:46 +0800
Lu Baolu wrote:
Hi Jacob,
On 7/16/20 12:01 AM, Jacob Pan wrote:
On W
Hi Yi,
On 7/30/20 5:36 PM, Liu, Yi L wrote:
From: Lu Baolu
Sent: Tuesday, July 14, 2020 1:57 PM
Replace iommu_aux_at(de)tach_device() with iommu_aux_at(de)tach_group().
It also saves the IOMMU_DEV_FEAT_AUX-capable physcail device in the vfio_group
data structure so that it could be reused
Hi Alex,
On 7/31/20 5:17 AM, Alex Williamson wrote:
On Thu, 30 Jul 2020 10:41:32 +0800
Lu Baolu wrote:
Hi Alex,
On 7/30/20 4:32 AM, Alex Williamson wrote:
On Tue, 14 Jul 2020 13:57:03 +0800
Lu Baolu wrote:
Replace iommu_aux_at(de)tach_device() with iommu_aux_at(de)tach_group
Hi Alex,
On 7/30/20 4:32 AM, Alex Williamson wrote:
On Tue, 14 Jul 2020 13:57:03 +0800
Lu Baolu wrote:
Replace iommu_aux_at(de)tach_device() with iommu_aux_at(de)tach_group().
It also saves the IOMMU_DEV_FEAT_AUX-capable physcail device in the
vfio_group data structure so that it could
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