This is a note to let you know that I've just added the patch titled
iommu/dma: Fix IOVA reserve dma ranges
to the 5.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-dma-fix-iova-reserve-dma-ranges.patch
and it can be found in the queue-5.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a6188518ffef369524cbb4aef99bd9e61757e71d
Author: Srinath Mannam <srinath.mannam@xxxxxxxxxxxx>
Date: Mon Sep 14 12:53:19 2020 +0530
iommu/dma: Fix IOVA reserve dma ranges
[ Upstream commit 571f316074a203e979ea90211d9acf423dfe5f46 ]
Fix IOVA reserve failure in the case when address of first memory region
listed in dma-ranges is equal to 0x0.
Fixes: aadad097cd46f ("iommu/dma: Reserve IOVA for PCIe inaccessible DMA address")
Signed-off-by: Srinath Mannam <srinath.mannam@xxxxxxxxxxxx>
Reviewed-by: Robin Murphy <robin.murphy@xxxxxxx>
Tested-by: Sven Peter <sven@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20200914072319.6091-1-srinath.mannam@xxxxxxxxxxxx
Signed-off-by: Joerg Roedel <jroedel@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 7bcdd1205535..95e7349ac3f1 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -243,9 +243,11 @@ resv_iova:
lo = iova_pfn(iovad, start);
hi = iova_pfn(iovad, end);
reserve_iova(iovad, lo, hi);
- } else {
+ } else if (end < start) {
/* dma_ranges list should be sorted */
- dev_err(&dev->dev, "Failed to reserve IOVA\n");
+ dev_err(&dev->dev,
+ "Failed to reserve IOVA [%#010llx-%#010llx]\n",
+ start, end);
return -EINVAL;
}
