From: Miles Chen
This change exports dma_alloc_from_contiguous and
dma_release_from_contiguous to modules.
Currently, we can add a reserve a memory node in dts files, make
it a CMA memory by setting compatible = "shared-dma-pool",
and setup the dev->cma_area by using
If a region has been mapped sparsely (such as on page faults), the user
has to keep track of what was mapped or not in order to avoid warnings
when unmapping the entire region. Remove the WARN on empty PTEs to allow
unmapping sparsely mapped regions.
Cc: Will Deacon
Cc: Robin Murphy
Cc: Joerg
When a system is under heavy memory pressure, the allocation in
alloc_iova_fast() could still fail even flush_rcache=true, and then
causes dma_ops_alloc_iova() return 0.
pqi_scsi_queue_command
pqi_raid_submit_scsi_cmd_with_io_request
scsi_dma_map
map_sg
dma_ops_alloc_iova
From: Tom Lendacky
If a device doesn't support DMA to a physical address that includes the
encryption bit (currently bit 47, so 48-bit DMA), then the DMA must
occur to unencrypted memory. SWIOTLB is used to satisfy that requirement
if an IOMMU is not active (enabled or configured in passthrough
From: Rob Clark
Avoid attaching any non-driver managed domain if the driver indicates
that it manages the iommu directly.
This avoids a problem on devices where the bootloader takes the SMMU out
of bypass and enables scanout, such as is the case on snapdragon aarch64
laptops and newer
On Wed, Jul 10, 2019 at 05:45:37PM +0100, Robin Murphy wrote:
> Hi Jordan,
>
> On 08/07/2019 20:00, Jordan Crouse wrote:
> >Add a new sub-format ARM_64_LPAE_SPLIT_S1 to create and set up split
> >pagetables (TTBR0 and TTBR1). The initialization function sets up the
> >correct va_size and sign
Hi Jordan,
On 08/07/2019 20:00, Jordan Crouse wrote:
Add a new sub-format ARM_64_LPAE_SPLIT_S1 to create and set up split
pagetables (TTBR0 and TTBR1). The initialization function sets up the
correct va_size and sign extension bits and programs the TCR registers.
Split pagetable formats use
On 08/07/2019 20:00, Jordan Crouse wrote:
When DOMAIN_ATTR_SPLIT_TABLES is specified for pass ARM_64_LPAE_SPLIT_S1
to io_pgtable_ops to allocate and initialize TTBR0 and TTBR1 pagetables.
v3: Moved all the pagetable specific work into io-pgtable-arm
in a previous patch.
Signed-off-by: Jordan
On Sat, Jun 29, 2019 at 10:09:13AM +0800, Yong Wu wrote:
> MediaTek extend the arm v7s descriptor to support the dram over 4GB.
>
> In the mt2712 and mt8173, it's called "4GB mode", the physical address
> is from 0x4000_ to 0x1_3fff_, but from EMI point of view, it
> is remapped to high
Hi,
following the official LPC19 VFIO/IOMMU/PCI microconference acceptance
notification:
https://www.linuxplumbersconf.org/blog/2019/vfio-iommu-pci-microconference-accepted-into-2019-linux-plumbers-conference/
I am sending out a call for sessions proposals open to all developers
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