On Mon, Jun 30, 2014 at 02:35:57PM -0400, Jerome Glisse wrote:
We do intend to tear down all secondary mapping inside the relase
callback but still we can not cleanup all the resources associated
with it.
And why can't you cleanup the other resources in the file close path?
Tearing down the
Hi Olav,
On Mon, Jun 30, 2014 at 05:51:51PM +0100, Olav Haugan wrote:
Mapping and unmapping are more often than not in the critical path.
map_range and unmap_range allows SMMU driver implementations to optimize
the process of mapping and unmapping buffers into the SMMU page tables.
Instead of
Hi Matt,
On Mon, Jun 30, 2014 at 05:51:52PM +0100, Olav Haugan wrote:
From: Matt Wagantall ma...@codeaurora.org
It is sometimes necessary to poll a memory-mapped register until its
value satisfies some condition. Introduce a family of convenience macros
that do this. Tight-loop and sleeping
Hi Andrew,
On Mon, Jun 30, 2014 at 06:57:48PM +, Lewycky, Andrew wrote:
As an aside we found another small issue: amd_iommu_bind_pasid calls
get_task_mm. This bumps the mm_struct use count and it will never be
released. This would prevent the buggy code path described above from
ever
On Tue, Jul 01, 2014 at 09:29:49AM +, Gabbay, Oded wrote:
In the KFD, we need to maintain a notion of each compute process.
Therefore, we have an object called kfd_process that is created for
each process that uses the KFD. Naturally, we need to be able to track
the process's shutdown in
Thierry Reding thierry.red...@gmail.com writes:
diff --git a/include/dt-bindings/memory/tegra124-mc.h
b/include/dt-bindings/memory/tegra124-mc.h
new file mode 100644
index ..6b1617ce022f
--- /dev/null
+++ b/include/dt-bindings/memory/tegra124-mc.h
@@ -0,0 +1,30 @@
+#ifndef
Some IOMMUs, such as the ARM SMMU, support two stages of translation.
The idea behind such a scheme is to allow a guest operating system to
use the IOMMU for DMA mappings in the first stage of translation, with
the hypervisor then installing mappings in the second stage to provide
isolation of the
VFIO allows devices to be safely handed off to userspace by putting
them behind an IOMMU configured to ensure DMA and interrupt isolation.
This enables userspace KVM clients, such as kvmtool and qemu, to further
map the device into a virtual machine.
With IOMMUs such as the ARM SMMU, it is then
On Tue, 2014-07-01 at 17:10 +0100, Will Deacon wrote:
Some IOMMUs, such as the ARM SMMU, support two stages of translation.
The idea behind such a scheme is to allow a guest operating system to
use the IOMMU for DMA mappings in the first stage of translation, with
the hypervisor then
Hi Alex,
Thanks for having a look.
On Tue, Jul 01, 2014 at 06:42:33PM +0100, Alex Williamson wrote:
On Tue, 2014-07-01 at 17:10 +0100, Will Deacon wrote:
Some IOMMUs, such as the ARM SMMU, support two stages of translation.
The idea behind such a scheme is to allow a guest operating system
On Tue, Jul 01, 2014 at 01:00:18PM +0200, Joerg Roedel wrote:
On Tue, Jul 01, 2014 at 09:29:49AM +, Gabbay, Oded wrote:
In the KFD, we need to maintain a notion of each compute process.
Therefore, we have an object called kfd_process that is created for
each process that uses the KFD.
On Tue, Jul 01, 2014 at 11:06:20PM +0200, Joerg Roedel wrote:
On Tue, Jul 01, 2014 at 03:33:44PM -0400, Jerome Glisse wrote:
On Tue, Jul 01, 2014 at 01:00:18PM +0200, Joerg Roedel wrote:
No, its not in this case. The file descriptor is used to connect a
process address space with a device
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