From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linuxppc-dev@lists.ozlabs.org
Cc: kvm@vger.kernel.org, Alexey Kardashevskiy <aik@ozlabs.ru>,
linux-kernel@vger.kernel.org,
Alex Williamson <alex.williamson@redhat.com>,
Paul Mackerras <paulus@samba.org>
Subject: [PATCH v5 06/29] vfio: powerpc/spapr: Disable DMA mappings on disabled container
Date: Tue, 10 Mar 2015 01:07:02 +1100 [thread overview]
Message-ID: <1425910045-26167-7-git-send-email-aik@ozlabs.ru> (raw)
In-Reply-To: <1425910045-26167-1-git-send-email-aik@ozlabs.ru>
At the moment DMA map/unmap requests are handled irrespective to
the container's state. This allows the user space to pin memory which
it might not be allowed to pin.
This adds checks to MAP/UNMAP that the container is enabled, otherwise
-EPERM is returned.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
drivers/vfio/vfio_iommu_spapr_tce.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c
index 432a0de..d3ab34f 100644
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -333,6 +333,9 @@ static long tce_iommu_ioctl(void *iommu_data,
struct iommu_table *tbl = container->tbl;
unsigned long tce;
+ if (!container->enabled)
+ return -EPERM;
+
if (!tbl)
return -ENXIO;
@@ -377,6 +380,9 @@ static long tce_iommu_ioctl(void *iommu_data,
struct vfio_iommu_type1_dma_unmap param;
struct iommu_table *tbl = container->tbl;
+ if (!container->enabled)
+ return -EPERM;
+
if (WARN_ON(!tbl))
return -ENXIO;
--
2.0.0
next prev parent reply other threads:[~2015-03-09 14:08 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-09 14:06 [PATCH v5 00/29] powerpc/iommu/vfio: Enable Dynamic DMA windows Alexey Kardashevskiy
2015-03-09 14:06 ` [PATCH v5 01/29] vfio: powerpc/spapr: Move page pinning from arch code to VFIO IOMMU driver Alexey Kardashevskiy
2015-03-09 14:06 ` [PATCH v5 02/29] vfio: powerpc/spapr: Do cleanup when releasing the group Alexey Kardashevskiy
2015-03-09 14:06 ` [PATCH v5 03/29] vfio: powerpc/spapr: Check that TCE page size is equal to it_page_size Alexey Kardashevskiy
2015-03-10 19:56 ` Alex Williamson
2015-03-10 22:57 ` Alexey Kardashevskiy
2015-03-10 23:03 ` Alex Williamson
2015-03-10 23:14 ` Benjamin Herrenschmidt
2015-03-10 23:34 ` Alex Williamson
2015-03-10 23:45 ` Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 04/29] vfio: powerpc/spapr: Use it_page_size Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 05/29] vfio: powerpc/spapr: Move locked_vm accounting to helpers Alexey Kardashevskiy
2015-03-09 14:07 ` Alexey Kardashevskiy [this message]
2015-03-09 14:07 ` [PATCH v5 07/29] vfio: powerpc/spapr: Moving pinning/unpinning " Alexey Kardashevskiy
2015-03-10 23:36 ` Alex Williamson
2015-03-09 14:07 ` [PATCH v5 08/29] vfio: powerpc/spapr: Register memory Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 09/29] vfio: powerpc/spapr: Rework attach/detach Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 10/29] powerpc/powernv: Do not set "read" flag if direction==DMA_NONE Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 11/29] powerpc/iommu: Move tce_xxx callbacks from ppc_md to iommu_table Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 12/29] powerpc/iommu: Introduce iommu_table_alloc() helper Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 13/29] powerpc/spapr: vfio: Switch from iommu_table to new iommu_table_group Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 14/29] vfio: powerpc/spapr: powerpc/iommu: Rework IOMMU ownership control Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 15/29] vfio: powerpc/spapr: powerpc/powernv/ioda2: " Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 16/29] powerpc/iommu: Fix IOMMU ownership control functions Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 17/29] powerpc/powernv/ioda/ioda2: Rework tce_build()/tce_free() Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 18/29] powerpc/iommu/powernv: Release replaced TCE Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 19/29] poweppc/powernv/ioda2: Rework iommu_table creation Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 20/29] powerpc/powernv/ioda2: Introduce pnv_pci_ioda2_create_table/pnc_pci_free_table Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 21/29] powerpc/powernv/ioda2: Introduce pnv_pci_ioda2_set_window Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 22/29] powerpc/iommu: Split iommu_free_table into 2 helpers Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 23/29] powerpc/powernv: Implement multilevel TCE tables Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 24/29] powerpc/powernv: Change prototypes to receive iommu Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 25/29] powerpc/powernv/ioda: Define and implement DMA table/window management callbacks Alexey Kardashevskiy
2015-03-11 8:54 ` Alexey Kardashevskiy
2015-03-11 9:31 ` Benjamin Herrenschmidt
2015-03-09 14:07 ` [PATCH v5 26/29] vfio: powerpc/spapr: Define v2 IOMMU Alexey Kardashevskiy
2015-03-11 0:00 ` Alex Williamson
2015-03-09 14:07 ` [PATCH v5 27/29] vfio: powerpc/spapr: powerpc/powernv/ioda2: Rework ownership Alexey Kardashevskiy
2015-03-11 0:09 ` Alex Williamson
2015-03-11 0:29 ` Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 28/29] vfio: powerpc/spapr: Support multiple groups in one container if possible Alexey Kardashevskiy
2015-03-09 14:07 ` [PATCH v5 29/29] vfio: powerpc/spapr: Support Dynamic DMA windows Alexey Kardashevskiy
2015-03-11 1:10 ` Alex Williamson
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