From: Niklas Schnelle <schnelle@linux.ibm.com>
To: Matthew Rosato <mjrosato@linux.ibm.com>,
Pierre Morel <pmorel@linux.ibm.com>,
iommu@lists.linux.dev
Cc: linux-s390@vger.kernel.org, borntraeger@linux.ibm.com,
hca@linux.ibm.com, gor@linux.ibm.com,
gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com,
svens@linux.ibm.com, joro@8bytes.org, will@kernel.org,
robin.murphy@arm.com, jgg@nvidia.com,
linux-kernel@vger.kernel.org
Subject: [PATCH v3 4/5] iommu/s390: Fix incorrect aperture check
Date: Thu, 29 Sep 2022 17:33:01 +0200 [thread overview]
Message-ID: <20220929153302.3195115-5-schnelle@linux.ibm.com> (raw)
In-Reply-To: <20220929153302.3195115-1-schnelle@linux.ibm.com>
The domain->geometry.aperture_end specifies the last valid address treat
it as such when checking if a DMA address is valid.
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
---
drivers/iommu/s390-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c
index ed0e64f478cf..6d4a9c7db32c 100644
--- a/drivers/iommu/s390-iommu.c
+++ b/drivers/iommu/s390-iommu.c
@@ -210,7 +210,7 @@ static int s390_iommu_update_trans(struct s390_domain *s390_domain,
int rc = 0;
if (dma_addr < s390_domain->domain.geometry.aperture_start ||
- dma_addr + size > s390_domain->domain.geometry.aperture_end)
+ dma_addr + size > s390_domain->domain.geometry.aperture_end + 1)
return -EINVAL;
nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
--
2.34.1
next prev parent reply other threads:[~2022-09-29 15:35 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-29 15:32 [PATCH v3 0/5] iommu/s390: Fixes related to attach and aperture handling Niklas Schnelle
2022-09-29 15:32 ` [PATCH v3 1/5] iommu/s390: Fix duplicate domain attachments Niklas Schnelle
2022-09-29 16:10 ` Jason Gunthorpe
2022-09-29 15:32 ` [PATCH v3 2/5] iommu/s390: Get rid of s390_domain_device Niklas Schnelle
2022-09-29 16:20 ` Jason Gunthorpe
2022-09-29 15:33 ` [PATCH v3 3/5] iommu/s390: Fix potential s390_domain aperture shrinking Niklas Schnelle
2022-09-29 16:24 ` Jason Gunthorpe
2022-09-29 15:33 ` Niklas Schnelle [this message]
2022-09-29 15:58 ` [PATCH v3 4/5] iommu/s390: Fix incorrect aperture check Jason Gunthorpe
2022-09-30 8:01 ` Niklas Schnelle
2022-09-29 15:33 ` [PATCH v3 5/5] iommu/s390: Fix incorrect pgsize_bitmap Niklas Schnelle
2022-09-29 15:59 ` Jason Gunthorpe
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