diff options
author | Jason Wang <jasowang@redhat.com> | 2021-04-06 12:03:30 +0800 |
---|---|---|
committer | Michael S. Tsirkin <mst@redhat.com> | 2021-04-06 07:11:36 -0400 |
commit | d83f46d189a26fa32434139954d264326f199a45 (patch) | |
tree | 1292bb94a1a503ab34af1b50356f01f41751c862 /include | |
parent | 90a66f48471975fd46f1caab1574679f0a0ef74b (diff) |
virtio-pci: compat page aligned ATS
Commit 4c70875372b8 ("pci: advertise a page aligned ATS") advertises
the page aligned via ATS capability (RO) to unbrek recent Linux IOMMU
drivers since 5.2. But it forgot the compat the capability which
breaks the migration from old machine type:
(qemu) qemu-kvm: get_pci_config_device: Bad config data: i=0x104 read:
0 device: 20 cmask: ff wmask: 0 w1cmask:0
This patch introduces a new parameter "x-ats-page-aligned" for
virtio-pci device and turns it on for machine type which is newer than
5.1.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: qemu-stable@nongnu.org
Fixes: 4c70875372b8 ("pci: advertise a page aligned ATS")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20210406040330.11306-1-jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
-rw-r--r-- | include/hw/pci/pcie.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h index 14c58ebdb6..6063bee0ec 100644 --- a/include/hw/pci/pcie.h +++ b/include/hw/pci/pcie.h @@ -137,7 +137,7 @@ void pcie_acs_reset(PCIDevice *dev); void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn); void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num); -void pcie_ats_init(PCIDevice *dev, uint16_t offset); +void pcie_ats_init(PCIDevice *dev, uint16_t offset, bool aligned); void pcie_cap_slot_pre_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp); |