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Groups > linux.kernel > #1534995
| From | Sricharan R <sricharan@codeaurora.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [RESEND PATCH V6 2/6] iommu/io-pgtable-arm: add support for the IOMMU_PRIV flag |
| Date | 2016-12-02 16:00 +0100 |
| Message-ID | <sJXtE-5bN-11@gated-at.bofh.it> (permalink) |
| References | <sJXtE-5bN-9@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
From: Jeremy Gebben <jgebben@codeaurora.org>
Allow the creation of privileged mode mappings, for stage 1 only.
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
---
[V6] No change
drivers/iommu/io-pgtable-arm.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index f5c90e1..69ba83a 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -350,11 +350,14 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data,
if (data->iop.fmt == ARM_64_LPAE_S1 ||
data->iop.fmt == ARM_32_LPAE_S1) {
- pte = ARM_LPAE_PTE_AP_UNPRIV | ARM_LPAE_PTE_nG;
+ pte = ARM_LPAE_PTE_nG;
if (!(prot & IOMMU_WRITE) && (prot & IOMMU_READ))
pte |= ARM_LPAE_PTE_AP_RDONLY;
+ if (!(prot & IOMMU_PRIV))
+ pte |= ARM_LPAE_PTE_AP_UNPRIV;
+
if (prot & IOMMU_MMIO)
pte |= (ARM_LPAE_MAIR_ATTR_IDX_DEV
<< ARM_LPAE_PTE_ATTRINDX_SHIFT);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
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[RESEND PATCH V6 0/6] Add support for privileged mappings Sricharan R <sricharan@codeaurora.org> - 2016-12-02 16:00 +0100
[RESEND PATCH V6 2/6] iommu/io-pgtable-arm: add support for the IOMMU_PRIV flag Sricharan R <sricharan@codeaurora.org> - 2016-12-02 16:00 +0100
[RESEND PATCH V6 4/6] arm64/dma-mapping: Implement DMA_ATTR_PRIVILEGED Sricharan R <sricharan@codeaurora.org> - 2016-12-02 16:00 +0100
[RESEND PATCH V6 3/6] common: DMA-mapping: add DMA_ATTR_PRIVILEGED attribute Sricharan R <sricharan@codeaurora.org> - 2016-12-02 16:00 +0100
[PATCH V6 6/6] iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged' Sricharan R <sricharan@codeaurora.org> - 2016-12-02 16:00 +0100
Re: [PATCH V6 6/6] iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged' Will Deacon <will.deacon@arm.com> - 2016-12-06 18:40 +0100
[RESEND PATCH V6 1/6] iommu: add IOMMU_PRIV attribute Sricharan R <sricharan@codeaurora.org> - 2016-12-02 16:00 +0100
[RESEND PATCH V6 5/6] dmaengine: pl330: Make sure microcode is privileged Sricharan R <sricharan@codeaurora.org> - 2016-12-02 16:00 +0100
Re: [RESEND PATCH V6 5/6] dmaengine: pl330: Make sure microcode is privileged Vinod Koul <vinod.koul@intel.com> - 2016-12-06 06:00 +0100
Re: [RESEND PATCH V6 0/6] Add support for privileged mappings Robin Murphy <robin.murphy@arm.com> - 2016-12-02 17:20 +0100
RE: [RESEND PATCH V6 0/6] Add support for privileged mappings "Sricharan" <sricharan@codeaurora.org> - 2016-12-04 08:50 +0100
Re: [RESEND PATCH V6 0/6] Add support for privileged mappings Robin Murphy <robin.murphy@arm.com> - 2016-12-06 20:20 +0100
RE: [RESEND PATCH V6 0/6] Add support for privileged mappings "Sricharan" <sricharan@codeaurora.org> - 2016-12-07 10:50 +0100
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