From: Alexey Kardashevskiy <aik@ozlabs.ru>
To: linuxppc-dev@lists.ozlabs.org
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Gavin Shan <gwshan@linux.vnet.ibm.com>,
Alexander Graf <agraf@suse.de>,
Alex Williamson <alex.williamson@redhat.com>,
Paul Mackerras <paulus@samba.org>,
linux-kernel@vger.kernel.org
Subject: [PATCH v4 02/28] vfio: powerpc/spapr: Do cleanup when releasing the group
Date: Mon, 16 Feb 2015 21:05:54 +1100 [thread overview]
Message-ID: <1424081180-4494-3-git-send-email-aik@ozlabs.ru> (raw)
In-Reply-To: <1424081180-4494-1-git-send-email-aik@ozlabs.ru>
This clears the TCE table when a container is being closed as this is
a good thing to leave the table clean before passing the ownership
back to the host kernel.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
drivers/vfio/vfio_iommu_spapr_tce.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/vfio/vfio_iommu_spapr_tce.c b/drivers/vfio/vfio_iommu_spapr_tce.c
index 1ef46c3..daf2e2c 100644
--- a/drivers/vfio/vfio_iommu_spapr_tce.c
+++ b/drivers/vfio/vfio_iommu_spapr_tce.c
@@ -134,16 +134,24 @@ static void *tce_iommu_open(unsigned long arg)
return container;
}
+static int tce_iommu_clear(struct tce_container *container,
+ struct iommu_table *tbl,
+ unsigned long entry, unsigned long pages);
+
static void tce_iommu_release(void *iommu_data)
{
struct tce_container *container = iommu_data;
+ struct iommu_table *tbl = container->tbl;
- WARN_ON(container->tbl && !container->tbl->it_group);
+ WARN_ON(tbl && !tbl->it_group);
tce_iommu_disable(container);
- if (container->tbl && container->tbl->it_group)
- tce_iommu_detach_group(iommu_data, container->tbl->it_group);
+ if (tbl) {
+ tce_iommu_clear(container, tbl, tbl->it_offset, tbl->it_size);
+ if (tbl->it_group)
+ tce_iommu_detach_group(iommu_data, tbl->it_group);
+ }
mutex_destroy(&container->lock);
kfree(container);
--
2.0.0
next prev parent reply other threads:[~2015-02-16 10:07 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-16 10:05 [PATCH v4 00/28] powerpc/iommu/vfio: Enable Dynamic DMA windows Alexey Kardashevskiy
2015-02-16 10:05 ` [PATCH v4 01/28] vfio: powerpc/spapr: Move page pinning from arch code to VFIO IOMMU driver Alexey Kardashevskiy
2015-02-16 10:05 ` Alexey Kardashevskiy [this message]
2015-02-16 10:05 ` [PATCH v4 03/28] vfio: powerpc/spapr: Check that TCE page size is equal to it_page_size Alexey Kardashevskiy
2015-02-16 10:05 ` [PATCH v4 04/28] vfio: powerpc/spapr: Use it_page_size Alexey Kardashevskiy
2015-02-16 10:05 ` [PATCH v4 05/28] vfio: powerpc/spapr: Move locked_vm accounting to helpers Alexey Kardashevskiy
2015-02-16 10:05 ` [PATCH v4 06/28] vfio: powerpc/spapr: Disable DMA mappings on disabled container Alexey Kardashevskiy
2015-02-16 10:05 ` [PATCH v4 07/28] vfio: powerpc/spapr: Moving pinning/unpinning to helpers Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 08/28] vfio: powerpc/spapr: Register memory Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 09/28] powerpc/powernv: Do not set "read" flag if direction==DMA_NONE Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 10/28] powerpc/iommu: Move tce_xxx callbacks from ppc_md to iommu_table Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 11/28] powerpc/iommu: Introduce iommu_table_alloc() helper Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 12/28] powerpc/spapr: vfio: Switch from iommu_table to new powerpc_iommu Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 13/28] powerpc/iommu: Fix IOMMU ownership control functions Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 14/28] vfio: powerpc/spapr: powerpc/powernv/ioda2: Rework IOMMU ownership control Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 15/28] powerpc/powernv/ioda/ioda2: Rework tce_build()/tce_free() Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 16/28] powerpc/iommu/powernv: Release replaced TCE Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 17/28] powerpc/pseries/lpar: Enable VFIO Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 18/28] poweppc/powernv/ioda2: Rework iommu_table creation Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 19/28] powerpc/powernv/ioda2: Introduce pnv_pci_ioda2_create_table Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 20/28] powerpc/powernv/ioda2: Introduce pnv_pci_ioda2_set_window Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 21/28] powerpc/iommu: Split iommu_free_table into 2 helpers Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 22/28] powerpc/powernv: Implement multilevel TCE tables Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 23/28] powerpc/powernv: Change prototypes to receive iommu Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 24/28] powerpc/powernv/ioda: Define and implement DMA table/window management callbacks Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 25/28] vfio: powerpc/spapr: powerpc/powernv/ioda2: Rework ownership Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 26/28] vfio: powerpc/spapr: Rework an IOMMU group attach/detach Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 27/28] vfio: powerpc/spapr: Register memory Alexey Kardashevskiy
2015-02-20 2:18 ` Alexey Kardashevskiy
2015-02-16 10:06 ` [PATCH v4 28/28] vfio: powerpc/spapr: Support Dynamic DMA windows Alexey Kardashevskiy
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