[PATCH RFC 01/13] iommu: arm-smmu-qcom: Configure lpac device with split address space

Anna Maniscalco anna.maniscalco2000 at gmail.com
Tue Jul 7 08:04:46 PDT 2026


On 7/6/26 5:00 PM, Dmitry Baryshkov wrote:
> On Sun, Jul 05, 2026 at 09:13:35PM +0200, Anna Maniscalco wrote:
>> We want the context bank used by LPAC to use split address space just
>> like GFX.
> Why?

I'll update the commit message in the next revision.

The reason is the same as GFX, we want split kernel and user address 
spaces so we can use per context page tables for userspace submissions.

>
>> Signed-off-by: Anna Maniscalco <anna.maniscalco2000 at gmail.com>
>> ---
>>   drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 11 ++++++++---
>>   1 file changed, 8 insertions(+), 3 deletions(-)
>>

Best regards,
-- 
Anna Maniscalco <anna.maniscalco2000 at gmail.com>




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