TLB sync timeouts can be due to various reasons such as TBU power down
or pending TCU/TBU invalidation/sync and so on. Debugging these often
require dumping of some implementation defined registers to know the
status of TBU/TCU operations and some of these registers are not
accessible in
Joerg,
On 5/20/22 3:09 PM, Joerg Roedel wrote:
Hi Suravee,
On Mon, May 16, 2022 at 07:27:51PM +0700, Suravee Suthikulpanit wrote:
- Also, it seems that the current iommu v2 page table use case, where
GVA->GPA=SPA
will no longer be supported on system w/ SNPSup=1. Any thoughts?
Support for
The pull request you sent on Wed, 25 May 2022 19:57:12 +0200:
> git://git.infradead.org/users/hch/dma-mapping.git
> tags/dma-mapping-5.19-2022-05-25
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/3f306ea2e18568f693f7763d1c2178f349ae8f31
Thank you!
--
On Thu, May 26, 2022 at 12:43:25AM +, Tian, Kevin wrote:
> iiuc then this suggests there should be only one iommu group per atu,
> instead of using generic_device_group() to create one group per
> device.
Sounds like it
> > rejected then this driver should have a IOMMU_DOMAIN_BLOCKING and
>
On 2022/5/25 23:25, Jason Gunthorpe wrote:
On Wed, May 25, 2022 at 01:19:08PM +0800, Baolu Lu wrote:
Hi Jason,
On 2022/5/24 21:44, Jason Gunthorpe wrote:
diff --git a/drivers/iommu/iommu-sva-lib.c b/drivers/iommu/iommu-sva-lib.c
index 106506143896..210c376f6043 100644
+++
> From: Jason Gunthorpe
> Sent: Thursday, May 26, 2022 2:27 AM
>
> On Wed, May 25, 2022 at 02:26:37PM +0800, Baolu Lu wrote:
> > On 2022/5/25 09:31, Nobuhiro Iwamatsu wrote:
> > > +static const struct iommu_ops visconti_atu_ops = {
> > > + .domain_alloc = visconti_atu_domain_alloc,
> > > +
On Wed, May 25, 2022 at 12:12 AM Sebastian Andrzej Siewior
wrote:
>
> On 2022-05-24 10:46:49 [-0700], Saravana Kannan wrote:
> > > Removing probe_timeout_waitqueue (as suggested) or setting the timeout
> > > to 0 avoids the delay.
> >
> > In your case, I think it might be working as intended?
The following changes since commit b2d229d4ddb17db541098b83524d901257e93845:
Linux 5.18-rc3 (2022-04-17 13:57:31 -0700)
are available in the Git repository at:
git://git.infradead.org/users/hch/dma-mapping.git
tags/dma-mapping-5.19-2022-05-25
for you to fetch changes up to
On Wed, May 25, 2022 at 02:26:37PM +0800, Baolu Lu wrote:
> On 2022/5/25 09:31, Nobuhiro Iwamatsu wrote:
> > +static const struct iommu_ops visconti_atu_ops = {
> > + .domain_alloc = visconti_atu_domain_alloc,
> > + .probe_device = visconti_atu_probe_device,
> > + .release_device =
Use try_cmpxchg64 instead of cmpxchg64 (*ptr, old, new) != old in
alloc_pte and free_clear_pte. cmpxchg returns success in ZF flag, so this
change saves a compare after cmpxchg (and related move instruction
in front of cmpxchg). Also, remove racy explicit assignment to pteval
when cmpxchg fails,
On Wed, May 25, 2022 at 01:19:08PM +0800, Baolu Lu wrote:
> Hi Jason,
>
> On 2022/5/24 21:44, Jason Gunthorpe wrote:
> > > diff --git a/drivers/iommu/iommu-sva-lib.c b/drivers/iommu/iommu-sva-lib.c
> > > index 106506143896..210c376f6043 100644
> > > +++ b/drivers/iommu/iommu-sva-lib.c
> > > @@
On 2022/5/25 19:06, Jean-Philippe Brucker wrote:
On Wed, May 25, 2022 at 11:07:49AM +0100, Robin Murphy wrote:
Did you mean @handler and @handler_token staffs below?
struct iommu_domain {
unsigned type;
const struct iommu_domain_ops *ops;
unsigned long
On Wed, May 25, 2022 at 11:07:49AM +0100, Robin Murphy wrote:
> > Did you mean @handler and @handler_token staffs below?
> >
> > struct iommu_domain {
> > unsigned type;
> > const struct iommu_domain_ops *ops;
> > unsigned long pgsize_bitmap; /* Bitmap of page sizes
On 2022-05-25 07:20, Baolu Lu wrote:
Hi Robin,
On 2022/5/24 22:36, Robin Murphy wrote:
On 2022-05-19 08:20, Lu Baolu wrote:
[...]
diff --git a/drivers/iommu/iommu-sva-lib.c
b/drivers/iommu/iommu-sva-lib.c
index 106506143896..210c376f6043 100644
--- a/drivers/iommu/iommu-sva-lib.c
+++
, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/intel-lab-lkp/linux/commits/Nobuhiro-Iwamatsu/Add-Visconti5-IOMMU-driver/20220525-093326
base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: alpha
> -Original Message-
> From: Shameerali Kolothum Thodi
> Sent: 17 May 2022 08:18
> To: 'Lorenzo Pieralisi' ; Robin Murphy
> ; raf...@kernel.org; j...@8bytes.org
> Cc: Guohanjun (Hanjun Guo) ;
> linux-arm-ker...@lists.infradead.org; linux-a...@vger.kernel.org;
>
On Wed, May 25, 2022 at 02:04:49AM +, Tian, Kevin wrote:
> > From: Jean-Philippe Brucker
> > Sent: Tuesday, May 24, 2022 6:58 PM
> >
> > On Tue, May 24, 2022 at 10:22:28AM +, Tian, Kevin wrote:
> > > > From: Lu Baolu
> > > > Sent: Thursday, May 19, 2022 3:21 PM
> > > >
> > > > The
On 2022-05-24 10:46:49 [-0700], Saravana Kannan wrote:
> > Removing probe_timeout_waitqueue (as suggested) or setting the timeout
> > to 0 avoids the delay.
>
> In your case, I think it might be working as intended? Curious, what
> was the call stack in your case where it was blocked?
Why is
On 2022/5/25 09:31, Nobuhiro Iwamatsu wrote:
+static const struct iommu_ops visconti_atu_ops = {
+ .domain_alloc = visconti_atu_domain_alloc,
+ .probe_device = visconti_atu_probe_device,
+ .release_device = visconti_atu_release_device,
+ .device_group =
From: Yunfei Wang
The level 1 and level 2 pgtable are both allocated in ZONE_DMA32, and
may have two possible problem:
1.The level 2 pgtable is allocated in ZONE_DMA32 with atomic flag, and
it may fail if ZONE_DMA32 memory is used out.
2.Single memory feature will make ZONE_DMA32 empty, and
From: Yunfei Wang
The calling to kmem_cache_alloc for level 2 pgtable allocation may run
in atomic context, and it fails sometimes when DMA32 zone runs out of
memory.
Since Mediatek IOMMU hardware support at most 35bit PA in pgtable,
so add a quirk to allow the PA of pgtables support up to
Hi Robin,
On 2022/5/24 22:36, Robin Murphy wrote:
On 2022-05-19 08:20, Lu Baolu wrote:
[...]
diff --git a/drivers/iommu/iommu-sva-lib.c
b/drivers/iommu/iommu-sva-lib.c
index 106506143896..210c376f6043 100644
--- a/drivers/iommu/iommu-sva-lib.c
+++ b/drivers/iommu/iommu-sva-lib.c
@@ -69,3
submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/intel-lab-lkp/linux/commits/Nobuhiro-Iwamatsu/Add-Visconti5-IOMMU-driver/20220525-093326
base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
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