On Wed, Mar 24, 2021 at 10:17:38AM +0800, Tian Tao wrote:
> under some scenarios, it is necessary to compile map_benchmark
> into module to test iommu, so this patch changed Kconfig and
> export_symbol to implement map_benchmark compiled into module.
>
> On the other hand, map_benchmark is a
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Wednesday, March 24, 2021 8:13 PM
> To: tiantao (H)
> Cc: a...@linux-foundation.org; pet...@infradead.org; paul...@kernel.org;
> a...@kernel.org; t...@linutronix.de; rost...@goodmis.org; h...@lst.de;
>
Hi Christoph,
On 3/24/21 1:33 AM, Christoph Hellwig wrote:
On Tue, Mar 23, 2021 at 09:05:58AM +0800, Lu Baolu wrote:
The SVM_FLAG_PRIVATE_PASID has never been referenced in the tree, and
there's no plan to have anything to use it. So cleanup it.
Signed-off-by: Lu Baolu
Looks good,
In arm_smmu_gerror_handler(), the value of the SMMU_GERROR register is
filtered by GERROR_ERR_MASK. However, the GERROR_ERR_MASK does not contain
the SFM bit. As a result, the subsequent error processing is not performed
when only the SFM error occurs.
Fixes: 48ec83bcbcf5 ("iommu/arm-smmu: Add
On Tue, Mar 23, 2021 at 06:51:44PM +, Kaneda, Erik wrote:
>
>
> > -Original Message-
> > From: Lorenzo Pieralisi
> > Sent: Tuesday, March 23, 2021 8:54 AM
> > To: Kaneda, Erik
> > Cc: Shameerali Kolothum Thodi ;
> > linux-arm-ker...@lists.infradead.org; linux-a...@vger.kernel.org;
On Mon, Mar 22, 2021 at 06:53:49PM -0700, Florian Fainelli wrote:
> When SWIOTLB_NO_FORCE is used, there should really be no allocations of
> default_nslabs to occur since we are not going to use those slabs. If a
> platform was somehow setting swiotlb_no_force and a later call to
> swiotlb_init()
On 2021-03-20 15:19, Sven Peter wrote:
Hi,
After Hector's initial work [1] to bring up Linux on Apple's M1 it's time to
bring up more devices. Most peripherals connected to the SoC are behind a iommu
which Apple calls "Device Address Resolution Table", or DART for short [2].
Unfortunately, it
Hi Jean-Philippe,
On Mon, 22 Mar 2021 10:24:00 +0100, Jean-Philippe Brucker
wrote:
> On Fri, Mar 19, 2021 at 11:22:21AM -0700, Jacob Pan wrote:
> > Hi Jason,
> >
> > On Fri, 19 Mar 2021 10:54:32 -0300, Jason Gunthorpe
> > wrote:
> > > On Fri, Mar 19, 2021 at 02:41:32PM +0100, Jean-Philippe
On Mon, Mar 15, 2021 at 10:27:08AM -0600, Logan Gunthorpe wrote:
> In this case the WARN_ON is just to guard against misuse of the
> function. It should never happen unless a developer changes the code in
> a way that is incorrect. So I think that's the correct use of WARN_ON.
> Though I might
On Wed, Mar 24, 2021 at 10:02:46AM -0700, Jacob Pan wrote:
> > Also wondering about device driver allocating auxiliary domains for their
> > private use, to do iommu_map/unmap on private PASIDs (a clean replacement
> > to super SVA, for example). Would that go through the same path as
> >
Am 24.03.21 um 18:21 schrieb Jason Gunthorpe:
On Mon, Mar 15, 2021 at 10:27:08AM -0600, Logan Gunthorpe wrote:
In this case the WARN_ON is just to guard against misuse of the
function. It should never happen unless a developer changes the code in
a way that is incorrect. So I think that's the
On 2021-03-20 15:19, Sven Peter wrote:
Apple's DART iommu uses a pagetable format that's very similar to the ones
already implemented by io-pgtable.c.
Add a new format variant to support the required differences.
TBH there look to be more differences than similarities, but I guess we
already
Hi Jason,
On Mon, 22 Mar 2021 09:03:00 -0300, Jason Gunthorpe wrote:
> On Fri, Mar 19, 2021 at 11:22:21AM -0700, Jacob Pan wrote:
> > Hi Jason,
> >
> > On Fri, 19 Mar 2021 10:54:32 -0300, Jason Gunthorpe
> > wrote:
> > > On Fri, Mar 19, 2021 at 02:41:32PM +0100, Jean-Philippe Brucker
> > >
Hi Jason,
On Wed, 24 Mar 2021 14:03:38 -0300, Jason Gunthorpe wrote:
> On Wed, Mar 24, 2021 at 10:02:46AM -0700, Jacob Pan wrote:
> > > Also wondering about device driver allocating auxiliary domains for
> > > their private use, to do iommu_map/unmap on private PASIDs (a clean
> > > replacement
From: Xiang Chen
After the change of patch ("iommu: Switch gather->end to the
inclusive end"), the performace drops from 1600+K IOPS to 1200K in our
kunpeng ARM64 platform.
We find that the range [start1, end1) actually is joint from the range
[end1, end2), but it is considered as disjoint
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