From: Srinath Mannam <srinath.mannam@broadcom.com> To: Robin Murphy <robin.murphy@arm.com>, Joerg Roedel <joro@8bytes.org>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Bjorn Helgaas <bhelgaas@google.com>, poza@codeaurora.org Cc: bcm-kernel-feedback-list@broadcom.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Srinath Mannam <srinath.mannam@broadcom.com> Subject: [PATCH v3] iommu/dma: Fix IOVA reserve dma ranges Date: Mon, 14 Sep 2020 12:53:19 +0530 [thread overview] Message-ID: <20200914072319.6091-1-srinath.mannam@broadcom.com> (raw) 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@broadcom.com> --- Changes from v2: Modify error message with useful information based on Bjorn's comments. Changes from v1: Removed unnecessary changes based on Robin's review comments. drivers/iommu/dma-iommu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 5141d49a046b..5b9791f35c5e 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -217,9 +217,11 @@ static int iova_reserve_pci_windows(struct pci_dev *dev, 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; } -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Srinath Mannam via iommu <iommu@lists.linux-foundation.org> To: Robin Murphy <robin.murphy@arm.com>, Joerg Roedel <joro@8bytes.org>, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Bjorn Helgaas <bhelgaas@google.com>, poza@codeaurora.org Cc: Srinath Mannam <srinath.mannam@broadcom.com>, iommu@lists.linux-foundation.org, bcm-kernel-feedback-list@broadcom.com, linux-kernel@vger.kernel.org Subject: [PATCH v3] iommu/dma: Fix IOVA reserve dma ranges Date: Mon, 14 Sep 2020 12:53:19 +0530 [thread overview] Message-ID: <20200914072319.6091-1-srinath.mannam@broadcom.com> (raw) 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@broadcom.com> --- Changes from v2: Modify error message with useful information based on Bjorn's comments. Changes from v1: Removed unnecessary changes based on Robin's review comments. drivers/iommu/dma-iommu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 5141d49a046b..5b9791f35c5e 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -217,9 +217,11 @@ static int iova_reserve_pci_windows(struct pci_dev *dev, 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; } -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next reply other threads:[~2020-09-14 7:23 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-09-14 7:23 Srinath Mannam [this message] 2020-09-14 7:23 ` [PATCH v3] iommu/dma: Fix IOVA reserve dma ranges Srinath Mannam via iommu 2021-06-02 20:18 ` Sven Peter 2021-06-02 20:18 ` Sven Peter via iommu 2021-06-03 11:00 ` Robin Murphy 2021-06-03 11:00 ` Robin Murphy 2021-06-04 15:33 ` Joerg Roedel 2021-06-04 15:33 ` Joerg Roedel
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