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 kernel v6 02/29] vfio: powerpc/spapr: Do cleanup when releasing the group
Date: Fri, 13 Mar 2015 19:07:10 +1100 [thread overview]
Message-ID: <1426234057-16165-3-git-send-email-aik@ozlabs.ru> (raw)
In-Reply-To: <1426234057-16165-1-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 6c59339..756831f 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:[~2015-03-13 8:08 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-13 8:07 [PATCH kernel v6 00/29] powerpc/iommu/vfio: Enable Dynamic DMA windows Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 01/29] vfio: powerpc/spapr: Move page pinning from arch code to VFIO IOMMU driver Alexey Kardashevskiy
2015-03-13 8:07 ` Alexey Kardashevskiy [this message]
2015-03-13 8:07 ` [PATCH kernel v6 03/29] vfio: powerpc/spapr: Check that TCE page size is equal to it_page_size Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 04/29] vfio: powerpc/spapr: Use it_page_size Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 05/29] vfio: powerpc/spapr: Move locked_vm accounting to helpers Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 06/29] vfio: powerpc/spapr: Disable DMA mappings on disabled container Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 07/29] vfio: powerpc/spapr: Moving pinning/unpinning to helpers Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 08/29] vfio: powerpc/spapr: Register memory Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 09/29] vfio: powerpc/spapr: Rework attach/detach Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 10/29] powerpc/powernv: Do not set "read" flag if direction==DMA_NONE Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 11/29] powerpc/iommu: Move tce_xxx callbacks from ppc_md to iommu_table Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 12/29] powerpc/iommu: Introduce iommu_table_alloc() helper Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 13/29] powerpc/spapr: vfio: Switch from iommu_table to new iommu_table_group Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 14/29] vfio: powerpc/spapr: powerpc/iommu: Rework IOMMU ownership control Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 15/29] vfio: powerpc/spapr: powerpc/powernv/ioda2: " Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 16/29] powerpc/iommu: Fix IOMMU ownership control functions Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 17/29] powerpc/powernv/ioda/ioda2: Rework tce_build()/tce_free() Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 18/29] powerpc/iommu/powernv: Release replaced TCE Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 19/29] powerpc/powernv/ioda2: Rework iommu_table creation Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 20/29] powerpc/powernv/ioda2: Introduce pnv_pci_ioda2_create_table/pnc_pci_free_table Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 21/29] powerpc/powernv/ioda2: Introduce pnv_pci_ioda2_set_window Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 22/29] powerpc/iommu: Split iommu_free_table into 2 helpers Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 23/29] powerpc/powernv: Implement multilevel TCE tables Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 24/29] powerpc/powernv: Change prototypes to receive iommu Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 25/29] powerpc/powernv/ioda: Define and implement DMA table/window management callbacks Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 26/29] vfio: powerpc/spapr: Define v2 IOMMU Alexey Kardashevskiy
2015-03-16 19:45 ` Alex Williamson
2015-03-17 2:59 ` Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 27/29] vfio: powerpc/spapr: powerpc/powernv/ioda2: Rework ownership Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 28/29] vfio: powerpc/spapr: Support multiple groups in one container if possible Alexey Kardashevskiy
2015-03-13 8:07 ` [PATCH kernel v6 29/29] vfio: powerpc/spapr: Support Dynamic DMA windows Alexey Kardashevskiy
2015-03-16 19:38 ` Alex Williamson
2015-03-17 1:02 ` Alexey Kardashevskiy
2015-03-17 2:49 ` Alex Williamson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1426234057-16165-3-git-send-email-aik@ozlabs.ru \
--to=aik@ozlabs.ru \
--cc=alex.williamson@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=paulus@samba.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).