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| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2023-11-10 12:51:07 -0500 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2023-11-13 11:35:47 +0100 |
| commit | 0ab35658401a2e0a411ce0d1836a4f509bde717a (patch) | |
| tree | 01fe216872fb452b00d4e4926712f381d7868480 /hw/s390x | |
| parent | 34aee9c94691f529cd952f9483a6b357ca098042 (diff) | |
| download | qemu-0ab35658401a2e0a411ce0d1836a4f509bde717a.zip qemu-0ab35658401a2e0a411ce0d1836a4f509bde717a.tar.gz qemu-0ab35658401a2e0a411ce0d1836a4f509bde717a.tar.bz2 | |
s390x/pci: bypass vfio DMA counting when using cdev
The current code assumes that there is always a vfio group, but
that's no longer guaranteed with the iommufd backend when using
cdev. In this case, we don't need to track the vfio dma limit
anyway.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Message-ID: <20231110175108.465851-2-mjrosato@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'hw/s390x')
| -rw-r--r-- | hw/s390x/s390-pci-vfio.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/s390x/s390-pci-vfio.c b/hw/s390x/s390-pci-vfio.c index 59a2e03..e28573b 100644 --- a/hw/s390x/s390-pci-vfio.c +++ b/hw/s390x/s390-pci-vfio.c @@ -66,6 +66,10 @@ S390PCIDMACount *s390_pci_start_dma_count(S390pciState *s, assert(vpdev); + if (!vpdev->vbasedev.group) { + return NULL; + } + id = vpdev->vbasedev.group->container->fd; if (!s390_pci_update_dma_avail(id, &avail)) { |