Hi Niklas,
Thank you for the patch.
On Wednesday 10 February 2016 01:57:57 Niklas Söderlund wrote:
No commit message ? I'd at least mention that as a side effect of this patch
channel 0 and 15 are disabled, reducing the effective number of channels to 14
per DMAC.
> Signed-off-by: Niklas Söde
Hi Niklas,
Thank you for the patch.
On Wednesday 10 February 2016 01:57:56 Niklas Söderlund wrote:
> Enable slave transfers to devices behind IPMMU:s by mapping the slave
> addresses using the dma-mapping API.
>
> Signed-off-by: Niklas Söderlund
> ---
> drivers/dma/sh/rcar-dmac.c | 57
Hi Niklas,
Thank you for the patch.
On Wednesday 10 February 2016 01:57:55 Niklas Söderlund wrote:
> Group slave address and transfer size in own structs for source and
> destination. This is in preparation for hooking up the dma-mapping API
> to the slave addresses.
>
> Signed-off-by: Niklas Sö
Hi Niklas,
Thank you for the patch.
On Wednesday 10 February 2016 01:57:54 Niklas Söderlund wrote:
> Add methods to map/unmap device resources addresses for dma_map_ops that
> are IOMMU aware. This is needed to map a device MMIO register from a
> physical address.
>
> Signed-off-by: Niklas Söder
Hi Niklas,
Thank you for the patch.
On Wednesday 10 February 2016 01:57:52 Niklas Söderlund wrote:
> Add methods to handle mapping of device resources from a physical
> address. This is needed for example to map be able to map MMIO FIFO
> registers to a IOMMU.
>
> Signed-off-by: Niklas Söderlund
Hi Niklas,
Thank you for the patch.
On Wednesday 10 February 2016 01:57:51 Niklas Söderlund wrote:
> From: Robin Murphy
>
> On some platforms, MMIO regions might need slightly different treatment
> compared to mapping regular memory; add the notion of MMIO mappings to
> the IOMMU API's memory t
The AMD Family 15h Models 30h-3Fh (Kaveri) BIOS and Kernel Developer's
Guide omitted part of the BIOS IOMMU L2 register setup specification.
Without this setup the IOMMU L2 does not fully respect write permissions
when handling an ATS translation request.
The IOMMU L2 will set PTE dirty bit when h
On Thu, Feb 11, 2016 at 01:56:43AM +0700, Suravee Suthikulpanit wrote:
> Ah.. agree then ;) So, I should branch off that tree of yours with the file
> already moved. Could you point me to it?
Not my tree, tip/master:
http://git.kernel.org/cgit/linux/kernel/git/tip/tip.git, the master branch.
Jus
Hi,
On 2/11/16 01:51, Borislav Petkov wrote:
So, I thought it might be alright to put the perf_event_amd_iommu.h
>here.
>
>Having the information in the file arch/x86/events/amd/iommu.h seems
>strange for having to specify ../../arch/x86/events/amd/iommu.h in the
>IOMMU driver.
>
>So, you think
On Thu, Feb 11, 2016 at 01:42:52AM +0700, Suravee Suthikulpanit wrote:
> The reason I picked this location to place the header file is because
> there is already an existing include/linux/perf/arm_pmu.h file there.
I don't think anything arch-specific belongs in generic kernel header
paths.
> So,
Hi Boris,
On 2/10/16 23:41, Borislav Petkov wrote:
On Tue, Feb 09, 2016 at 04:53:51PM -0600, Suravee Suthikulpanit wrote:
>This patch consolidates "arch/x86/kernel/cpu/perf_event_amd_iommu.h" and
>"drivers/iommu/amd_iommu_proto.h", which contain duplicate function
>declarations, into "include/l
On Tue, Feb 09, 2016 at 04:53:55PM -0600, Suravee Suthikulpanit wrote:
> The current amd_iommu_pc_get_set_reg_val() does not support muli-IOMMU
> system. This patch replace amd_iommu_pc_get_set_reg_val() with
> amd_iommu_pc_set_reg_val() and amd_iommu_pc_[set|get]_cnt_vals().
>
> Also, the current
On Tue, Feb 09, 2016 at 04:53:54PM -0600, Suravee Suthikulpanit wrote:
> Introduce a helper function to calculate bit-index for assigning
> performance counter assignment.
>
> Signed-off-by: Suravee Suthikulpanit
> ---
> arch/x86/kernel/cpu/perf_event_amd_iommu.c | 20 +++-
> 1 f
On Tue, Feb 09, 2016 at 04:53:51PM -0600, Suravee Suthikulpanit wrote:
> This patch consolidates "arch/x86/kernel/cpu/perf_event_amd_iommu.h" and
> "drivers/iommu/amd_iommu_proto.h", which contain duplicate function
> declarations, into "include/linux/perf/perf_event_amd_iommu.h"
>
> Reviewed-by:
Hi Robin,
On Tue, Jan 26, 2016 at 05:13:13PM +, Robin Murphy wrote:
> Add a nearly-complete ARMv7 short descriptor implementation, omitting
> only a few legacy and CPU-centric aspects which shouldn't be necessary
> for IOMMU API use anyway.
>
> Signed-off-by: Yong Wu
> Signed-off-by: Robin M
Borrow the disable_bypass parameter from the SMMUv3 driver as a handy
debugging/security feature so that unmatched stream IDs (i.e. devices
not attached to an IOMMU domain) may be configured to fault.
Rather than introduce unsightly inconsistency, or repeat the existing
unnecessary use of module_p
On Tue, Jan 26, 2016 at 05:13:15PM +, Robin Murphy wrote:
> In certain unmapping situations it is quite possible to end up issuing
> back-to-back TLB synchronisations, which at best is a waste of time and
> effort, and at worst causes some hardware to get rather confused. Whilst
> the pagetable
Hi Boris,
On 02/09/2016 06:08 PM, Borislav Petkov wrote:
You probably want to redo those against latest tip/master:
http://git.kernel.org/tip/5b26547dd7faa84e1293baa144a0f3e74ed7d4c7
-- Regards/Gruss, Boris.
Sure, I'll re-base this. By the way, do you have any other comments
regarding the c
Hello.
On 2/10/2016 3:57 AM, Niklas Söderlund wrote:
Add methods to handle mapping of device resources from a physical
address. This is needed for example to map be able to map MMIO FIFO
^^^ not needed
registers to a IOMMU.
Signed-off-by: Niklas Söde
On 09/02/16 14:06, Will Deacon wrote:
Hi Robin,
On Tue, Jan 26, 2016 at 06:06:35PM +, Robin Murphy wrote:
Borrow the disable_bypass parameter from the SMMUv3 driver as a handy
debugging/security feature so that unmatched stream IDs (i.e. devices
not attached to an IOMMU domain) may be confi
On 09/02/16 14:15, Will Deacon wrote:
On Tue, Jan 26, 2016 at 06:06:37PM +, Robin Murphy wrote:
TLB synchronisation is a mighty big hammmer to bring down on the
transaction stream, typically stalling all in-flight transactions until
the sync completes. Since in most cases (except at stage 2
On 10/02/16 00:57, Niklas Söderlund wrote:
Enable slave transfers to devices behind IPMMU:s by mapping the slave
addresses using the dma-mapping API.
Signed-off-by: Niklas Söderlund
---
drivers/dma/sh/rcar-dmac.c | 57 ++
1 file changed, 52 inserti
Hi Niklas,
Thanks for doing this, it looks good. Just a couple of minor comments on
this and the next patch...
On 10/02/16 00:57, Niklas Söderlund wrote:
Map/Unmap a device resource from a physical address. If no dma_map_ops
method is available the operation is a no-op.
Signed-off-by: Niklas
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