On Fri, Jul 06, 2018 at 03:20:34PM +0100, Robin Murphy wrote:
>> What are you trying to do? I really don't want to see more users of
>> the hooks as they are are a horribly bad idea.
>
> I really need to fix the ongoing problem we have where, due to funky
> integrations, devices suffer some downs
From: Sricharan R
The smmu needs to be functional only when the respective
master's using it are active. The device_link feature
helps to track such functional dependencies, so that the
iommu gets powered when the master device enables itself
using pm_runtime. So by adapting the smmu driver for
r
This series provides the support for turning on the arm-smmu's
clocks/power domains using runtime pm. This is done using the
recently introduced device links patches, which lets the smmu's
runtime to follow the master's runtime pm, so the smmu remains
powered only when the masters use it.
As not al
From: Sricharan R
The smmu device probe/remove and add/remove master device callbacks
gets called when the smmu is not linked to its master, that is without
the context of the master device. So calling runtime apis in those places
separately.
Signed-off-by: Sricharan R
[vivek: Cleanup pm runtim
From: Sricharan R
Finally add the device link between the master device and
smmu, so that the smmu gets runtime enabled/disabled only when the
master needs it. This is done from add_device callback which gets
called once when the master is added to the smmu.
Signed-off-by: Sricharan R
Signed-of
qcom,smmu-v2 is an arm,smmu-v2 implementation with specific
clock and power requirements. This smmu core is used with
multiple masters on msm8996, viz. mdss, video, etc.
Add bindings for the same.
Signed-off-by: Vivek Gautam
Reviewed-by: Rob Herring
Reviewed-by: Tomasz Figa
---
- No change si
Hello Fredrik,
> Gesendet: Samstag, 07. Juli 2018 um 08:32 Uhr
> Von: "Fredrik Noring"
> An: "Jürgen Urban" , "Robin Murphy"
>
> Cc: "Christoph Hellwig" , linux-ker...@vger.kernel.org,
> iommu@lists.linux-foundation.org, "Maciej W. Rozycki"
> Betreff: Re: [PATCH] dma-mapping: Relax warnings f
The TTSEL bit of IMUCTRn register of R-Car Gen3 needs to be set
unused MMU context number even if uTLBs are disabled
(The MMUEN bit of IMUCTRn register = 0).
Since initial values of IMUCTRn.TTSEL on all IPMMU-domains are 0,
this patch adds a new feature "reserved_context" to reserve IPMMU
context n
Hi,
This patch set improves the PASID id and PASID table management
for Intel IOMMU driver.
PATCH 1~3 replace per IOMMU idr name space with a global one.
Current per IOMMU idr doesn't work in some cases where one
application (associated with a PASID) might talk to two physical
devices simultaneou
This adds the system wide PASID name space for the PASID
allocation. Currently we are using per IOMMU PASID name
spaces which are not suitable for some use cases. For an
example, one application (associated with a PASID) might
talk to two physical devices simultaneously while the two
devices could
idr_for_each_entry() is used to iteratte over idr elements
of a given type. It isn't suitable for the globle pasid idr
since the pasid idr consumer could specify different types
of pointers to bind with a pasid.
Cc: Ashok Raj
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Liu Yi L
Signed-off-by: Lu Baolu
R
This patch applies the global pasid name space in the shared
virtual address (SVA) implementation.
Cc: Ashok Raj
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Liu Yi L
Signed-off-by: Lu Baolu
Reviewed-by: Kevin Tian
Reviewed-by: Liu Yi L
---
drivers/iommu/intel-svm.c | 22 +++---
incl
This allows the per device iommu data and some helpers to be
used in other files.
Cc: Ashok Raj
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Liu Yi L
Signed-off-by: Lu Baolu
Reviewed-by: Liu Yi L
---
drivers/iommu/intel-iommu.c | 63 +++--
include/linux/intel-iom
This adds a helper named for_each_device_domain() to iterate
over the elements in device_domain_list and invoke a callback
against each element. This allows to search the device_domain
list in other source files.
Cc: Ashok Raj
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Liu Yi L
Signed-off-by: Lu Baolu
This patch adds the interfaces for per PCI device pasid
table management. Currently we allocate one pasid table
for all PCI devices under the scope of an IOMMU. It's
insecure in some cases where multiple devices under one
single IOMMU unit support PASID features. With per PCI
device pasid table, we
This patch allocates a PASID table for a PCI device at the time
when the dmar dev_info is attached to dev->archdata.iommu, and
free it in the opposite case.
Cc: Ashok Raj
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Liu Yi L
Signed-off-by: Lu Baolu
Reviewed-by: Liu Yi L
---
drivers/iommu/intel-iommu.c
This patch applies the per pci device pasid table in the Shared
Virtual Address (SVA) implementation.
Cc: Ashok Raj
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Liu Yi L
Signed-off-by: Lu Baolu
Reviewed-by: Liu Yi L
---
drivers/iommu/intel-iommu.c | 29 +
drivers/iommu/intel
The obsolete per iommu pasid tables are no longer used. Hence,
clean up them.
Cc: Ashok Raj
Cc: Jacob Pan
Cc: Kevin Tian
Cc: Liu Yi L
Signed-off-by: Lu Baolu
Reviewed-by: Liu Yi L
---
drivers/iommu/intel-iommu.c | 6 +++---
drivers/iommu/intel-svm.c | 17 ++---
include/linux/
在 2018年07月03日 19:44, lijiang 写道:
> 在 2018年07月03日 19:14, Borislav Petkov 写道:
>> On Tue, Jul 03, 2018 at 06:58:14PM +0800, lijiang wrote:
>>> For kdump, the elf header finally use the crash kernel reserved memory, it
>>> is not an old memory.
>>
>> Lamme repeat my suggestion:
>>
>> So beef up the lo
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