Patch for adding map_sg/unmap_sg to the generic IOMMU API.
v3 -> v4:
* Removed BUG_ON in both map_sg and unmap_sg
* Removed PAGE_ALIGN of length of mapping
v2 -> v3:
* Updated commit text
* Simplifed fallback code and fixed variable types in map_sg function.
* Renamed and changed arguments to map
Mapping and unmapping are more often than not in the critical path.
map_sg and unmap_sg allows IOMMU driver implementations to optimize
the process of mapping and unmapping buffers into the IOMMU page tables.
Instead of mapping a buffer one page at a time and requiring potentially
expensive TLB op
On Wed, Jul 30, 2014 at 06:58:13PM +0100, Mitchel Humpherys wrote:
> request_irq shouldn't be called from atomic context since it might
> sleep, but we're calling it with a spinlock held, resulting in:
[...]
> @@ -900,22 +905,23 @@ static int arm_smmu_init_domain_context(struct
> iommu_domain *d
Hi Thierry,
On Thursday 31 July 2014 12:43:03 Thierry Reding wrote:
> From: Thierry Reding
>
> This commit introduces a generic device tree binding for IOMMU devices.
> Only a very minimal subset is described here, but it is enough to cover
> the requirements of both the Exynos System MMU and Te
On Thu, Jul 31, 2014 at 10:14:08AM -0700, Olof Johansson wrote:
> On Thu, Jul 31, 2014 at 9:36 AM, Joerg Roedel wrote:
> > On Thu, Jul 31, 2014 at 08:38:47AM -0700, Olof Johansson wrote:
> >> >
> >> > Applied, thanks everyone.
> >>
> >> Really?
> >>
> >> Gee, thanks for giving people a chance to r
On Thu, Jul 31, 2014 at 9:36 AM, Joerg Roedel wrote:
> On Thu, Jul 31, 2014 at 08:38:47AM -0700, Olof Johansson wrote:
>> >
>> > Applied, thanks everyone.
>>
>> Really?
>>
>> Gee, thanks for giving people a chance to reply with acks. It's
>> considered polite to do so when there has been outstandi
On Thu, Jul 31, 2014 at 08:38:47AM -0700, Olof Johansson wrote:
> >
> > Applied, thanks everyone.
>
> Really?
>
> Gee, thanks for giving people a chance to reply with acks. It's
> considered polite to do so when there has been outstanding questions.
Its not pushed yet, I can still make changes.
On Thu, Jul 31, 2014 at 5:04 AM, Joerg Roedel wrote:
> On Thu, Jul 31, 2014 at 12:43:03PM +0200, Thierry Reding wrote:
>> From: Thierry Reding
>>
>> This commit introduces a generic device tree binding for IOMMU devices.
>> Only a very minimal subset is described here, but it is enough to cover
>
Hi,
On Thu, Jul 31, 2014 at 10:41:36PM +0800, Jiang Liu wrote:
> Really appreciate your help. There are two issues left
> according to the log messages.
first of all:
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-postin
On Tue, Jul 29, 2014 at 06:18:10PM +0200, Joerg Roedel wrote:
> Changes V1->V2:
>
> * Rebase to v3.16-rc7
> * Added call of ->invalidate_range to
> __mmu_notifier_invalidate_end() so that the subsystem
> doesn't need to register an ->invalidate_end() call-back,
> subsystems will likely eithe
Hi Borislav,
Really appreciate your help. There are two issues left
according to the log messages.
The first issue is " WARNING: CPU: 2 PID: 3786 at
fs/proc/generic.c:521 remove_proc_entry+0x19c/0x1b0()".
It's caused by an issue in usb driver and a patch is ready to fix
this issue,
On Wed, Jul 30, 2014 at 06:58:13PM +0100, Mitchel Humpherys wrote:
> request_irq shouldn't be called from atomic context since it might
> sleep, but we're calling it with a spinlock held, resulting in:
>
> [9.172202] BUG: sleeping function called from invalid context at
> kernel/mm/slub.c
On Thu, Jul 31, 2014 at 12:43:03PM +0200, Thierry Reding wrote:
> From: Thierry Reding
>
> This commit introduces a generic device tree binding for IOMMU devices.
> Only a very minimal subset is described here, but it is enough to cover
> the requirements of both the Exynos System MMU and Tegra S
On Tue, Jul 29, 2014 at 11:21:58AM -0600, Greg Edwards wrote:
> [ 6638.327851] BUG: unable to handle kernel NULL pointer dereference at
> 0090
> [ 6638.335955] IP: [] intel_ioapic_set_affinity+0x82/0x1b0
> [ 6638.343012] PGD 99172e067 PUD 1026979067 PMD 0
> [ 6638.347858] Oops: [
On Thu, Jul 31, 2014 at 11:50:17AM +0100, Mark Rutland wrote:
> On Thu, Jul 31, 2014 at 11:09:06AM +0100, Thierry Reding wrote:
> > On Wed, Jul 30, 2014 at 07:18:42PM +0100, Mark Rutland wrote:
> > [...]
> > > > >> +
> > > > >> +Multiple-master IOMMU with configurable DMA window:
> > > > >> +--
On Thu, Jul 31, 2014 at 11:43:03AM +0100, Thierry Reding wrote:
> From: Thierry Reding
>
> This commit introduces a generic device tree binding for IOMMU devices.
> Only a very minimal subset is described here, but it is enough to cover
> the requirements of both the Exynos System MMU and Tegra S
On Thu, Jul 31, 2014 at 11:09:06AM +0100, Thierry Reding wrote:
> On Wed, Jul 30, 2014 at 07:18:42PM +0100, Mark Rutland wrote:
> [...]
> > > >> +
> > > >> +Multiple-master IOMMU with configurable DMA window:
> > > >> +---
> > > >> +
> > > >> + /
On Thu, Jul 31, 2014 at 12:23:51PM +0200, Joerg Roedel wrote:
> On Thu, Jul 31, 2014 at 12:18:08PM +0200, Thierry Reding wrote:
> > It looks like this hasn't been applied yet, so I can send out a v5
> > shortly with the requested changes addressed.
>
> Yes, please send a v5 with the requested chan
From: Thierry Reding
This commit introduces a generic device tree binding for IOMMU devices.
Only a very minimal subset is described here, but it is enough to cover
the requirements of both the Exynos System MMU and Tegra SMMU as
discussed here:
https://lkml.org/lkml/2014/4/27/346
Acked-by:
On Thu, Jul 31, 2014 at 12:18:08PM +0200, Thierry Reding wrote:
> It looks like this hasn't been applied yet, so I can send out a v5
> shortly with the requested changes addressed.
Yes, please send a v5 with the requested changes and all Reviewed-bys
and Acked-bys this got so far. I'll take it int
On Thu, Jul 31, 2014 at 10:22:41AM +0100, Mark Rutland wrote:
> [...]
>
> > > > +Examples:
> > > > +=
> > > > +
> > > > +Single-master IOMMU:
> > > > +
> > > > +
> > > > + iommu {
> > > > + #iommu-cells = <0>;
> > > > + };
> > > > +
> > > > +
On Wed, Jul 30, 2014 at 07:18:42PM +0100, Mark Rutland wrote:
[...]
> > >> +
> > >> +Multiple-master IOMMU with configurable DMA window:
> > >> +---
> > >> +
> > >> + / {
> > >> + #address-cells = <1>;
> > >> + #size-cells
On Wed, Jul 30, 2014 at 10:35:06AM -0700, Olof Johansson wrote:
> Hi,
>
> On Wed, Jul 30, 2014 at 8:26 AM, Mark Rutland wrote:
> > Hi Thierry,
> >
> > This looks sane to me.
> >
> > I just have a few questions below which are hopefully simple/stupid.
> >
> > On Fri, Jul 04, 2014 at 04:29:17PM +01
[...]
> > > +Examples:
> > > +=
> > > +
> > > +Single-master IOMMU:
> > > +
> > > +
> > > + iommu {
> > > + #iommu-cells = <0>;
> > > + };
> > > +
> > > + master {
> > > + iommus = <&/iommu>;
> >
> > Nit: this should be iommus = <&{/iommu}>, or it's not
On Wed, Jul 30, 2014 at 04:26:47PM +0100, Mark Rutland wrote:
> Hi Thierry,
>
> This looks sane to me.
>
> I just have a few questions below which are hopefully simple/stupid.
>
> On Fri, Jul 04, 2014 at 04:29:17PM +0100, Thierry Reding wrote:
> > From: Thierry Reding
> >
> > This commit intro
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