When a DMA domain is attached to a device, it needs to allocate a domain
ID from its IOMMU. Currently, the domain ID information is stored in two
static arrays embedded in the domain structure. This can lead to memory
waste when the driver is running on a small platform.
This optimizes these
In the IOMMU hot-add path, there's a need to check whether an IOMMU
has been probed. Instead of checking the IOMMU pointer in the global
list, it's better to allocate a flag bit in iommu->flags for this
purpose.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.h | 1 +
If the available hardware exceeds DMAR_UNITS_SUPPORTED (previously set
to MAX_IO_APICS, or 128), it causes these messages: "DMAR: Failed to
allocate seq_id", "DMAR: Parse DMAR table failure.", and "x2apic: IRQ
remapping doesn't support X2APIC mode x2apic disabled"; and the system
fails to boot
It is not used anywhere. Remove it to avoid dead code.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.h | 1 -
drivers/iommu/intel/iommu.c | 18 --
2 files changed, 19 deletions(-)
diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h
index
Switch dmar unit sequence id allocation and release from bitmap to IDA
interface.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/dmar.c | 33 +++--
1 file changed, 7 insertions(+), 26 deletions(-)
diff --git a/drivers/iommu/intel/dmar.c b/drivers/iommu/intel/dmar.c
Hi folks,
This is a follow-up series of changes proposed by this patch:
https://lore.kernel.org/linux-iommu/20220615183650.32075-1-steve.w...@hpe.com/
It removes several static arrays of size DMAR_UNITS_SUPPORTED and sets
the DMAR_UNITS_SUPPORTED to 1024.
Please help review and suggest.
Best
The g_iommus is not used anywhere. Remove it to avoid dead code.
Signed-off-by: Lu Baolu
---
drivers/iommu/intel/iommu.c | 42 -
1 file changed, 42 deletions(-)
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index
Hi Joerg,
One fix is queued for v5.19. It aims to fix:
- RID2PASID setup/teardown failures for pci alias devices
Please consider it for the iommu/fix branch.
Best regards,
Lu Baolu
Lu Baolu (1):
iommu/vt-d: Fix RID2PASID setup/teardown failure
include/linux/intel-iommu.h | 3 --
The IOMMU driver shares the pasid table for PCI alias devices. When the
RID2PASID entry of the shared pasid table has been filled by the first
device, the subsequent device will encounter the "DMAR: Setup RID2PASID
failed" failure as the pasid entry has already been marked as present.
As the
Hi, Jerry and Baolu,
On Fri, Jun 24, 2022 at 07:47:30AM -0700, Jerry Snitselaar wrote:
> > > > > > Hi Baolu & Dave,
> > > > fails.
> > > >
> > > > You also will get the following warning if you don't have scalable
> > > > mode enabled (either not enabled by default, or if enabled by default
> >
Arnd,
Am 24.06.2022 um 21:10 schrieb Arnd Bergmann:
On Sat, Jun 18, 2022 at 3:06 AM Michael Schmitz wrote:
Am 18.06.2022 um 00:57 schrieb Arnd Bergmann:
All architecture-independent users of virt_to_bus() and bus_to_virt()
have been fixed to use the dma mapping interfaces or have been
On Sat, Jun 25, 2022 at 12:52:27PM -0700, Fenghua Yu wrote:
> Hi, Jerry and Baolu,
>
> On Fri, Jun 24, 2022 at 07:47:30AM -0700, Jerry Snitselaar wrote:
> > > > > > > Hi Baolu & Dave,
> > > > > fails.
> > > > >
> > > > > You also will get the following warning if you don't have scalable
> > > >
Hi folks,
On 2022/6/21 22:43, Lu Baolu wrote:
Hi folks,
The former part of this series refactors the IOMMU SVA code by assigning
an SVA type of iommu_domain to a shared virtual address and replacing
sva_bind/unbind iommu ops with set/block_dev_pasid domain ops.
The latter part changes the
The following changes since commit a111daf0c53ae91e71fd2bfe7497862d14132e3e:
Linux 5.19-rc3 (2022-06-19 15:06:47 -0500)
are available in the Git repository at:
git://git.infradead.org/users/hch/dma-mapping.git
tags/dma-mapping-5.19-2022-06-26
for you to fetch changes up to
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