On Fri, Jun 17, 2022 at 02:53:13AM +, Tian, Kevin wrote:
> > > ...
> > > > - if (resv_msi) {
> > > > + if (resv_msi && !domain->msi_cookie) {
> > > > ret = iommu_get_msi_cookie(domain->domain,
> > > > resv_msi_base);
> > > > if (ret && ret != -ENODEV)
> > >
> Gesendet: Freitag, 17. Juni 2022 um 19:22 Uhr
> Von: "Robin Murphy"
> An: "Frank Wunderlich" , "Christoph Hellwig"
>
> Cc: linux-ker...@vger.kernel.org, iommu@lists.linux-foundation.org, "Marek
> Szyprowski"
> Betreff: Re: helping with remapping vmem for dma
>
> On 2022-06-17 17:17, Frank
On 2022-06-17 17:17, Frank Wunderlich wrote:
Am 15. Juni 2022 15:17:00 MESZ schrieb Christoph Hellwig :
On Wed, Jun 15, 2022 at 02:15:33PM +0100, Robin Murphy wrote:
Put simply, if you want to call dma_map_single() on a buffer, then that
buffer needs to be allocated with kmalloc() (or
Am 15. Juni 2022 15:17:00 MESZ schrieb Christoph Hellwig :
>On Wed, Jun 15, 2022 at 02:15:33PM +0100, Robin Murphy wrote:
>> Put simply, if you want to call dma_map_single() on a buffer, then that
>> buffer needs to be allocated with kmalloc() (or technically alloc_pages(),
>> but then
From: Tianyu Lan
Traditionally swiotlb was not performance critical because it was only
used for slow devices. But in some setups, like TDX/SEV confidential
guests, all IO has to go through swiotlb. Currently swiotlb only has a
single lock. Under high IO load with multiple CPUs this can lead to
Hi Robin,
On 06.06.2022 14:38, Robin Murphy wrote:
> On 2022-06-02 16:58, Marek Szyprowski wrote:
>> On 23.05.2022 19:30, Robin Murphy wrote:
>>> On 2022-05-11 13:15, Ajay Kumar wrote:
From: Marek Szyprowski
Zero is a valid DMA and IOVA address on many architectures, so adjust
On 2022/6/17 下午4:20, Zhangfei Gao wrote:
On 2022/6/17 下午2:05, Zhangfei Gao wrote:
On 2022/6/16 下午4:14, Jean-Philippe Brucker wrote:
On Thu, Jun 16, 2022 at 12:10:18PM +0800, Zhangfei Gao wrote:
diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index
On 2022-06-17 13:57, Arnd Bergmann wrote:
From: Arnd Bergmann
The BusLogic driver is the last remaining driver that relies on the
deprecated bus_to_virt() function, which in turn only works on a few
architectures, and is incompatible with both swiotlb and iommu support.
Before commit
From: 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
removed now. This means the definitions on most architectures, and the
CONFIG_VIRT_TO_BUS symbol are now obsolete and can be removed.
The
From: Arnd Bergmann
The BusLogic driver is the last remaining driver that relies on the
deprecated bus_to_virt() function, which in turn only works on a few
architectures, and is incompatible with both swiotlb and iommu support.
Before commit 391e2f25601e ("[SCSI] BusLogic: Port driver to
From: Arnd Bergmann
The virt_to_bus/bus_to_virt interface has been deprecated for
decades. After Jakub Kicinski put a lot of work into cleaning out the
network drivers using them, there are only a couple of other drivers
left, which can all be removed or otherwise cleaned up, to remove the
old
From: Arnd Bergmann
The dpt_i2o driver was fixed to stop using virt_to_bus() in 2008, but
it still has a stale reference in an error handling code path that could
never work.
Fix it up to build without VIRT_TO_BUS and remove the Kconfig dependency.
The alternative to this would be to just
On 15/06/2022 11:10, Shameer Kolothum wrote:
> Hi
>
> v12 --> v13
> -No changes. Rebased to 5.19-rc1.
> -Picked up tags received from Laurentiu, Hanjun and Will. Thanks!.
You've already got my Tested-by tags, but just to confirm I gave this a
spin and it works fine.
Thanks,
Steve
>
>
On 15/06/2022 14:28, AngeloGioacchino Del Regno wrote:
Il 15/06/22 14:09, Matthias Brugger ha scritto:
On 09/06/2022 12:08, AngeloGioacchino Del Regno wrote:
On some SoCs (of which only MT8195 is supported at the time of writing),
the "R" and "W" (I/O) enable bits for the IOMMUs are in the
Hello everyone!
We are pleased to announce that there will be another
VFIO/IOMMU/PCI Microconference
at this year's Linux Plumbers Conference (LPC), from 12th to the 14th of
September in Dublin, Ireland. LPC is a hybrid event this year;
attendance can be in person or remote.
In this
On 2022/6/17 下午2:05, Zhangfei Gao wrote:
On 2022/6/16 下午4:14, Jean-Philippe Brucker wrote:
On Thu, Jun 16, 2022 at 12:10:18PM +0800, Zhangfei Gao wrote:
diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index 281c54003edc..b6219c6bfb48 100644
---
> From: Lu Baolu
> Sent: Tuesday, June 7, 2022 9:50 AM
>
> +
> +static const struct iommu_domain_ops intel_svm_domain_ops = {
> + .set_dev_pasid = intel_svm_attach_dev_pasid,
> + .block_dev_pasid= intel_svm_detach_dev_pasid,
> + .free =
> From: Baolu Lu
> Sent: Friday, June 10, 2022 3:16 PM
> >
> >> +#define __IOMMU_DOMAIN_HOST_VA(1U << 5) /* Host CPU virtual
> address */
> >
> > Do you mean general CPU VA? or Host CPU VA, I'm reading the latter as
> 2nd
> > stage?
>
> Host CPU VA. In the near future, we will add another
On Fri, Jun 17, 2022 at 3:16 AM Yoshihiro Shimoda
wrote:
> Fix compatible string for R-Car Gen4.
>
> Fixes: ae684caf465b ("iommu/ipmmu-vmsa: Add support for R-Car Gen4")
> Signed-off-by: Yoshihiro Shimoda
Reviewed-by: Geert Uytterhoeven
Gr{oetje,eeting}s,
Geert
--
On 2022/6/16 下午4:14, Jean-Philippe Brucker wrote:
On Thu, Jun 16, 2022 at 12:10:18PM +0800, Zhangfei Gao wrote:
diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index 281c54003edc..b6219c6bfb48 100644
--- a/drivers/misc/uacce/uacce.c
+++ b/drivers/misc/uacce/uacce.c
@@
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