On Wed, 2020-07-15 at 14:51 -0600, Rob Herring wrote:
> On Thu, Jul 02, 2020 at 05:37:17PM +0800, Miles Chen wrote:
> > Add a description for mediatek,infracfg. We can check if 4GB mode
> > is enable by reading it instead of checking the unexported
> > symbol "max_pfn".
> >
> > This is a step towa
On Wed, 2020-07-15 at 23:05 +0200, Matthias Brugger wrote:
>
> On 02/07/2020 11:37, Miles Chen wrote:
> > In previous disscusion [1] and [2], we found that it is risky to
> > use max_pfn or totalram_pages to tell if 4GB mode is enabled.
> >
> > Check 4GB mode by reading infracfg register, remove
On 2020-07-17 00:07, Barry Song wrote:
Before commit 587e6c10a7ce ("iommu/arm-smmu-v3: Reduce contention during
command-queue insertion"), msi polling perhaps performed better since
it could run outside the spin_lock_irqsave() while the code polling cons
reg was running in the lock.
But after th
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Friday, July 17, 2020 8:55 PM
> To: Song Bao Hua (Barry Song) ; w...@kernel.org;
> j...@8bytes.org
> Cc: linux-ker...@vger.kernel.org; Linuxarm ;
> linux-arm-ker...@lists.infradead.org; iommu@lists.linux-foun
On Thu, Jul 16, 2020 at 10:38:17PM +0200, Auger Eric wrote:
> Hi Jean,
>
> On 7/16/20 5:39 PM, Jean-Philippe Brucker wrote:
> > On Tue, Jul 14, 2020 at 10:12:49AM +, Liu, Yi L wrote:
> >>> Have you verified that this doesn't break the existing usage of
> >>> DOMAIN_ATTR_NESTING in drivers/vfio
Hello Joerg,
On 2020-07-10 14:31, Joerg Roedel wrote:
On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
The IVRS ACPI table specifies maximum address sizes for I/O virtual
addresses that can be handled by the IOMMUs in the system. Parse that
data from the IVRS header to provide ape
On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
Hello Joerg,
On 2020-07-10 14:31, Joerg Roedel wrote:
On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
The IVRS ACPI table specifies maximum address sizes for I/O virtual
addresses that can be handled by the IOMMUs in the system
On Mon, Jul 13, 2020 at 02:50:20PM +0100, Will Deacon wrote:
> On Tue, Jul 07, 2020 at 10:00:12PM -0700, Krishna Reddy wrote:
> > Changes in v10:
> > Perform SMMU base ioremap before calling implementation init.
> > Check for Global faults across both ARM MMU-500s during global interrupt.
> > Check
Hi Jean,
On 7/17/20 11:09 AM, Jean-Philippe Brucker wrote:
> On Thu, Jul 16, 2020 at 10:38:17PM +0200, Auger Eric wrote:
>> Hi Jean,
>>
>> On 7/16/20 5:39 PM, Jean-Philippe Brucker wrote:
>>> On Tue, Jul 14, 2020 at 10:12:49AM +, Liu, Yi L wrote:
> Have you verified that this doesn't break
On 2020-07-13 14:44, Will Deacon wrote:
On Tue, Jul 07, 2020 at 10:00:17PM -0700, Krishna Reddy wrote:
Add global/context fault hooks to allow vendor specific implementations
override default fault interrupt handlers.
Update NVIDIA implementation to override the default global/context fault
int
On Fri, 10 Jul 2020 23:18:21 +, John Stultz wrote:
> This patch series provides exports and config tweaks to allow
> the qcom-pdc driver to be able to be configured as a permement
> modules (particularlly useful for the Android Generic Kernel
> Image efforts).
>
> This was part of a larger pat
On Fri, 2020-07-17 at 10:47 +0100, Robin Murphy wrote:
>
> On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
> > Hello Joerg,
> >
> > On 2020-07-10 14:31, Joerg Roedel wrote:
> > > On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
> > > > The IVRS ACPI table specifies maximum addre
Hi Jacob,
On 7/16/20 8:45 PM, Jacob Pan wrote:
> IOMMU UAPI is newly introduced to support communications between guest
> virtual IOMMU and host IOMMU. There has been lots of discussions on how
> it should work with VFIO UAPI and userspace in general.
>
> This document is indended to clarify the
Hi Jacob,
On 7/16/20 8:45 PM, Jacob Pan wrote:
> As IOMMU UAPI gets extended, user data size may increase. To support
> backward compatibiliy, this patch introduces a size field to each UAPI
> data structures. It is *always* the responsibility for the user to fill in
> the correct size. Padding fi
Hi Jacob,
On 7/16/20 8:45 PM, Jacob Pan wrote:
> IOMMU UAPI data size is filled by the user space which must be validated
> by ther kernel. To ensure backward compatibility, user data can only be
s/ther/the
> extended by either re-purpose padding bytes or extend the variable sized
> union at the e
On 2020-07-17 14:22, Sironi, Filippo wrote:
On Fri, 2020-07-17 at 10:47 +0100, Robin Murphy wrote:
On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
Hello Joerg,
On 2020-07-10 14:31, Joerg Roedel wrote:
On Wed, Jul 01, 2020 at 12:46:31AM +0200, Sebastian Ott wrote:
The IVRS ACPI table spe
On Fri, 2020-07-17 at 15:36 +0100, Robin Murphy wrote:
> On 2020-07-17 14:22, Sironi, Filippo wrote:
> > On Fri, 2020-07-17 at 10:47 +0100, Robin Murphy wrote:
> > >
> > > On 2020-07-17 10:20, Sebastian Ott via iommu wrote:
> > > > Hello Joerg,
> > > >
> > > > On 2020-07-10 14:31, Joerg Roedel wr
Hi Jacob,
On 7/16/20 8:45 PM, Jacob Pan wrote:
Could you share a branch? I was not able to apply this on either
iommu/next or master?
> IOMMU UAPI data has a user filled argsz field which indicates the data
> length comes with the API call.
s/ comes with the API call/ of the structure
User data
Hi Jacob,
On 7/16/20 8:45 PM, Jacob Pan wrote:
> IOMMU generic layer already does sanity checks UAPI data for version
> match and argsz range under generic information.
> Remove the redundant version check from VT-d driver and check for vendor
> specific data size.
>
> Signed-off-by: Jacob Pan
R
Hi Yi,
On 7/12/20 1:20 PM, Liu Yi L wrote:
> IOMMUs that support nesting translation needs report the capability info
s/needs/need to report
> to userspace, e.g. the format of first level/stage paging structures.
It gives information about requirements the userspace needs to implement
plus other f
Hi Yi,
Missing a proper commit message. You can comment on the fact you only
support the case where all the physical iomms have the same CAP/ECAP MASKS
On 7/12/20 1:21 PM, Liu Yi L wrote:
> Cc: Kevin Tian
> CC: Jacob Pan
> Cc: Alex Williamson
> Cc: Eric Auger
> Cc: Jean-Philippe Brucker
> Cc
Yi,
On 7/12/20 1:20 PM, Liu Yi L wrote:
> This patch is added as instead of returning a boolean for DOMAIN_ATTR_NESTING,
> iommu_domain_get_attr() should return an iommu_nesting_info handle.
you may add in the commit message you return an empty nesting info
struct for now as true nesting is not y
Yi,
On 7/12/20 1:20 PM, Liu Yi L wrote:
> This patch exports iommu nesting capability info to user space through
> VFIO. User space is expected to check this info for supported uAPIs (e.g.
it is not only to check the supported uAPIS but rather to know which
callbacks it must call upon vIOMMU event
On Thu, 16 Jul 2020 11:45:13 -0700
Jacob Pan wrote:
> IOMMU UAPI is newly introduced to support communications between guest
> virtual IOMMU and host IOMMU. There has been lots of discussions on how
> it should work with VFIO UAPI and userspace in general.
>
> This document is indended to clarif
On Thu, 16 Jul 2020 11:45:16 -0700
Jacob Pan wrote:
> IOMMU UAPI data has a user filled argsz field which indicates the data
> length comes with the API call. User data is not trusted, argsz must be
> validated based on the current kernel data size, mandatory data size,
> and feature flags.
>
>
>On Mon, Jul 13, 2020 at 02:50:20PM +0100, Will Deacon wrote:
>> On Tue, Jul 07, 2020 at 10:00:12PM -0700, Krishna Reddy wrote:
> >> Changes in v10:
>> > Perform SMMU base ioremap before calling implementation init.
>> > Check for Global faults across both ARM MMU-500s during global interrupt.
>> >
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