From: sricharan@codeaurora.org (Sricharan R)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V7 8/8] iommu/arm-smmu: Revert "iommu/arm-smmu: Set PRIVCFG in stage 1 STEs"
Date: Tue, 13 Dec 2016 00:08:47 +0530 [thread overview]
Message-ID: <1481567927-14791-9-git-send-email-sricharan@codeaurora.org> (raw)
In-Reply-To: <1481567927-14791-1-git-send-email-sricharan@codeaurora.org>
From: Robin Murphy <robin.murphy@arm.com>
Now that proper privileged mappings can be requested via IOMMU_PRIV,
unconditionally overriding the incoming PRIVCFG becomes the wrong thing
to do, so stop it.
This reverts commit df5e1a0f2a2d779ad467a691203bcbc74d75690e.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
drivers/iommu/arm-smmu-v3.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 257a6a3..0eca0553 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -269,9 +269,6 @@
#define STRTAB_STE_1_SHCFG_INCOMING 1UL
#define STRTAB_STE_1_SHCFG_SHIFT 44
-#define STRTAB_STE_1_PRIVCFG_UNPRIV 2UL
-#define STRTAB_STE_1_PRIVCFG_SHIFT 48
-
#define STRTAB_STE_2_S2VMID_SHIFT 0
#define STRTAB_STE_2_S2VMID_MASK 0xffffUL
#define STRTAB_STE_2_VTCR_SHIFT 32
@@ -1073,9 +1070,7 @@ static void arm_smmu_write_strtab_ent(struct arm_smmu_device *smmu, u32 sid,
#ifdef CONFIG_PCI_ATS
STRTAB_STE_1_EATS_TRANS << STRTAB_STE_1_EATS_SHIFT |
#endif
- STRTAB_STE_1_STRW_NSEL1 << STRTAB_STE_1_STRW_SHIFT |
- STRTAB_STE_1_PRIVCFG_UNPRIV <<
- STRTAB_STE_1_PRIVCFG_SHIFT);
+ STRTAB_STE_1_STRW_NSEL1 << STRTAB_STE_1_STRW_SHIFT);
if (smmu->features & ARM_SMMU_FEAT_STALLS)
dst[1] |= cpu_to_le64(STRTAB_STE_1_S1STALLD);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
prev parent reply other threads:[~2016-12-12 18:38 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-12 18:38 [PATCH V7 0/8] Add support for privileged mappings Sricharan R
2016-12-12 18:38 ` [PATCH V7 1/8] iommu: add IOMMU_PRIV attribute Sricharan R
2016-12-12 18:38 ` [PATCH V7 2/8] iommu/io-pgtable-arm: add support for the IOMMU_PRIV flag Sricharan R
2016-12-12 18:38 ` [PATCH V7 3/8] iommu/io-pgtable-arm-v7s: Add " Sricharan R
2016-12-12 18:38 ` [PATCH V7 4/8] common: DMA-mapping: add DMA_ATTR_PRIVILEGED attribute Sricharan R
2016-12-13 13:55 ` Robin Murphy
2016-12-12 18:38 ` [PATCH V7 5/8] arm64/dma-mapping: Implement DMA_ATTR_PRIVILEGED Sricharan R
2016-12-13 14:02 ` Robin Murphy
2016-12-13 14:38 ` Sricharan
2016-12-13 14:46 ` Robin Murphy
2016-12-13 14:54 ` Sricharan
2016-12-13 18:46 ` Sricharan
2016-12-13 19:11 ` Robin Murphy
2017-01-02 13:22 ` Sricharan
2016-12-12 18:38 ` [PATCH V7 6/8] dmaengine: pl330: Make sure microcode is privileged Sricharan R
2016-12-12 18:38 ` [PATCH V7 7/8] iommu/arm-smmu: Set privileged attribute to 'default' instead of 'unprivileged' Sricharan R
2016-12-13 12:20 ` Robin Murphy
2016-12-12 18:38 ` Sricharan R [this message]
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