From: Bjorn Andersson <quic_bjorande@quicinc.com>
To: Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>
Cc: <linux-arm-msm@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
Bjorn Andersson <quic_bjorande@quicinc.com>
Subject: [PATCH v3 0/3] soc: qcom: rmtfs: Support dynamic allocation
Date: Wed, 20 Sep 2023 19:37:29 -0700 [thread overview]
Message-ID: <20230920-rmtfs-mem-guard-pages-v3-0-305b37219b78@quicinc.com> (raw)
Some platforms have laxed requirements on the placement of the rmtfs
memory region, introduce support for guard pages to allow the DeviceTree
author to rely on the OS/Linux for placement of the region.
Changes since v2:
- Rewrote DeviceTree binding description, to avoid dictating the OS
behavior.
- Adjusted addr and size before memremap(), to avoid mapping the guard
pages, and unnecessarily have to adjust the base pointer.
Changes since v1:
- Drop qcom,alloc-size in favour of using reserved-memory/size
- Introduce explicit property to signal that guard pages should be
carved out from this region (rather than always do it in the dynamic
case).
- Drop the dma_alloc_coherent() based approach and just add support for
the guard pages.
- Added handling of failed reserved-memory allocation (patch 3)
---
Bjorn Andersson (3):
dt-bindings: reserved-memory: rmtfs: Allow guard pages
soc: qcom: rmtfs: Support discarding guard pages
soc: qcom: rtmfs: Handle reserved-memory allocation issues
.../devicetree/bindings/reserved-memory/qcom,rmtfs-mem.yaml | 11 +++++++++++
drivers/soc/qcom/rmtfs_mem.c | 11 ++++++++++-
2 files changed, 21 insertions(+), 1 deletion(-)
---
base-commit: 926f75c8a5ab70567eb4c2d82fbc96963313e564
change-id: 20230920-rmtfs-mem-guard-pages-d3d0ed0cb036
Best regards,
--
Bjorn Andersson <quic_bjorande@quicinc.com>
next reply other threads:[~2023-09-21 2:37 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-21 2:37 Bjorn Andersson [this message]
2023-09-21 2:37 ` [PATCH v3 1/3] dt-bindings: reserved-memory: rmtfs: Allow guard pages Bjorn Andersson
2023-09-21 7:06 ` Konrad Dybcio
2023-09-23 17:46 ` Krzysztof Kozlowski
2023-09-21 2:37 ` [PATCH v3 2/3] soc: qcom: rmtfs: Support discarding " Bjorn Andersson
2023-09-21 7:28 ` Konrad Dybcio
2023-09-21 18:04 ` Stephan Gerhold
2023-09-22 2:51 ` Bjorn Andersson
2023-09-22 7:35 ` Stephan Gerhold
2023-09-22 13:50 ` Bjorn Andersson
2023-09-21 2:37 ` [PATCH v3 3/3] soc: qcom: rtmfs: Handle reserved-memory allocation issues Bjorn Andersson
2023-09-21 7:09 ` Konrad Dybcio
2023-09-21 18:11 ` Stephan Gerhold
2023-09-22 2:44 ` Bjorn Andersson
2023-09-28 0:34 ` (subset) [PATCH v3 0/3] soc: qcom: rmtfs: Support dynamic allocation Bjorn Andersson
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