Linux v4.18.10

This commit is contained in:
Laura Abbott 2018-09-26 02:12:31 -07:00
commit 0cf94ec30f
3 changed files with 5 additions and 68 deletions

View file

@ -1,64 +0,0 @@
From 369971aa0101c4cfb84dacaaaa1b5cc5790c14ff Mon Sep 17 00:00:00 2001
From: Thierry Reding <treding@nvidia.com>
Date: Wed, 11 Apr 2018 10:34:17 +0200
Subject: [PATCH] drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
Depending on the kernel configuration, early ARM architecture setup code
may have attached the GPU to a DMA/IOMMU mapping that transparently uses
the IOMMU to back the DMA API. Tegra requires special handling for IOMMU
backed buffers (a special bit in the GPU's MMU page tables indicates the
memory path to take: via the SMMU or directly to the memory controller).
Transparently backing DMA memory with an IOMMU prevents Nouveau from
properly handling such memory accesses and causes memory access faults.
As a side-note: buffers other than those allocated in instance memory
don't need to be physically contiguous from the GPU's perspective since
the GPU can map them into contiguous buffers using its own MMU. Mapping
these buffers through the IOMMU is unnecessary and will even lead to
performance degradation because of the additional translation.
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
index 1f07999aea1d..ac7706f56f6f 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
@@ -19,6 +19,11 @@
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
+
+#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
+#include <asm/dma-iommu.h>
+#endif
+
#include <core/tegra.h>
#ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER
#include "priv.h"
@@ -105,6 +110,20 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev)
unsigned long pgsize_bitmap;
int ret;
+#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)
+ if (dev->archdata.mapping) {
+ struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev);
+
+ arm_iommu_release_mapping(mapping);
+ arm_iommu_detach_device(dev);
+
+ if (dev->archdata.dma_coherent)
+ set_dma_ops(dev, &arm_coherent_dma_ops);
+ else
+ set_dma_ops(dev, &arm_dma_ops);
+ }
+#endif
+
if (!tdev->func->iommu_bit)
return;
--
2.16.3

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@ -54,7 +54,7 @@ Summary: The Linux kernel
%if 0%{?released_kernel}
# Do we have a -stable update to apply?
%define stable_update 9
%define stable_update 10
# Set rpm version accordingly
%if 0%{?stable_update}
%define stablerev %{stable_update}
@ -590,8 +590,6 @@ Patch305: qcom-msm89xx-fixes.patch
# https://patchwork.kernel.org/project/linux-mmc/list/?submitter=71861
Patch306: arm-sdhci-esdhc-imx-fixes.patch
Patch307: arm-tegra-fix-nouveau-crash.patch
# https://patchwork.kernel.org/patch/10539291/
Patch308: mmc-sunxi-allow-3.3V-DDR-when-DDR-is-available.patch
# https://patchwork.kernel.org/patch/10540521/
@ -1883,6 +1881,9 @@ fi
#
#
%changelog
* Wed Sep 26 2018 Laura Abbott <labbott@redhat.com> - 4.18.10-100
- Linux v4.18.10
* Wed Sep 26 2018 Laura Abbott <labbott@redhat.com>
- Fix powerpc IPv6 (rhbz 1628394)

View file

@ -1,2 +1,2 @@
SHA512 (linux-4.18.tar.xz) = 950eb85ac743b291afe9f21cd174d823e25f11883ee62cecfbfff8fe8c5672aae707654b1b8f29a133b1f2e3529e63b9f7fba4c45d6dacccc8000b3a9a9ae038
SHA512 (patch-4.18.9.xz) = 1ef82764f93a96e759a1b969ce965c0981f86a5d6e2376e7f637209ea1114ce2636bb41971e616973ce8a55692999086f75e465dd96deb77876e9a2fd6ceddc4
SHA512 (patch-4.18.10.xz) = ff00f5b50921654494bf0cc290a82871bf3f053dc170abbde906499e3bffe1f368a94a6c09196ded618ae46fe2fa74e05b4e594f31ccc08a7071efa1e9ec4a68