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From: Eric Auger <eric.auger@redhat.com>
To: eric.auger.pro@gmail.com, eric.auger@redhat.com, joro@8bytes.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
dwmw2@infradead.org, robin.murphy@arm.com
Cc: alex.williamson@redhat.com, shameerali.kolothum.thodi@huawei.com,
jean-philippe.brucker@arm.com
Subject: [PATCH v5 5/7] iommu/vt-d: Handle PCI bridge RMRR device scopes in intel_iommu_get_resv_regions
Date: Tue, 28 May 2019 13:50:23 +0200 [thread overview]
Message-ID: <20190528115025.17194-6-eric.auger@redhat.com> (raw)
In-Reply-To: <20190528115025.17194-1-eric.auger@redhat.com>
In the case the RMRR device scope is a PCI-PCI bridge, let's check
the device belongs to the PCI sub-hierarchy.
Fixes: 0659b8dc45a6 ("iommu/vt-d: Implement reserved region get/put callbacks")
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
drivers/iommu/intel-iommu.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 35508687f178..9302351818ab 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -5496,7 +5496,8 @@ static void intel_iommu_get_resv_regions(struct device *device,
struct iommu_resv_region *resv;
size_t length;
- if (i_dev != device)
+ if (i_dev != device &&
+ !is_downstream_to_pci_bridge(device, i_dev))
continue;
length = rmrr->end_address - rmrr->base_address + 1;
--
2.20.1
next prev parent reply other threads:[~2019-05-28 11:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-28 11:50 [PATCH v5 0/7] RMRR related fixes and enhancements Eric Auger
2019-05-28 11:50 ` [PATCH v5 1/7] iommu: Fix a leak in iommu_insert_resv_region Eric Auger
2019-05-29 6:17 ` Christoph Hellwig
2019-05-29 15:38 ` Auger Eric
2019-05-28 11:50 ` [PATCH v5 2/7] iommu/vt-d: Duplicate iommu_resv_region objects per device list Eric Auger
2019-05-29 2:04 ` Lu Baolu
2019-05-29 15:40 ` Auger Eric
2019-05-28 11:50 ` [PATCH v5 3/7] iommu/vt-d: Introduce is_downstream_to_pci_bridge helper Eric Auger
2019-05-29 2:11 ` Lu Baolu
2019-05-29 6:21 ` Christoph Hellwig
2019-05-29 15:43 ` Auger Eric
2019-05-28 11:50 ` [PATCH v5 4/7] iommu/vt-d: Handle RMRR with PCI bridge device scopes Eric Auger
2019-05-29 2:12 ` Lu Baolu
2019-05-28 11:50 ` Eric Auger [this message]
2019-05-29 2:13 ` [PATCH v5 5/7] iommu/vt-d: Handle PCI bridge RMRR device scopes in intel_iommu_get_resv_regions Lu Baolu
2019-05-28 11:50 ` [PATCH v5 6/7] iommu: Introduce IOMMU_RESV_DIRECT_RELAXABLE reserved memory regions Eric Auger
2019-05-28 11:50 ` [PATCH v5 7/7] iommu/vt-d: Differentiate relaxable and non relaxable RMRRs Eric Auger
2019-05-29 2:34 ` Lu Baolu
2019-05-29 15:43 ` Auger Eric
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