Messages in this thread | | | From | Rob Clark <> | Date | Tue, 31 May 2022 09:15:22 -0700 | Subject | Re: [PATCH 1/6] iommu/qcom: Use the asid read from device-tree if specified |
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On Tue, May 31, 2022 at 8:46 AM Will Deacon <will@kernel.org> wrote: > > On Fri, May 27, 2022 at 11:28:56PM +0200, Konrad Dybcio wrote: > > From: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org> > > > > As specified in this driver, the context banks are 0x1000 apart. > > Problem is that sometimes the context number (our asid) does not > > match this logic and we end up using the wrong one: this starts > > being a problem in the case that we need to send TZ commands > > to do anything on a specific context. > > I don't understand this. The ASID is a software construct, so it shouldn't > matter what we use. If it does matter, then please can you explain why? The > fact that the context banks are 0x1000 apart seems unrelated.
I think the connection is that mapping from ctx bank to ASID is 1:1
BR, -R
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