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virtio,pci,pc: features, fixes, tests

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vhost will now no longer set a call notifier if unused
 some work towards loongarch testing based on bios-tables-test
 some core pci work for SVM support in vtd
 vhost vdpa init has been optimized for response time to QMP
 A couple more fixes
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pci,pc: features, fixes, tests

vhost will now no longer set a call notifier if unused
some work towards loongarch testing based on bios-tables-test
some core pci work for SVM support in vtd
vhost vdpa init has been optimized for response time to QMP
A couple more fixes

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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# gpg: Signature made Mon 02 Jun 2025 14:29:41 EDT
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
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#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (26 commits)
  hw/i386/pc_piix: Fix RTC ISA IRQ wiring of isapc machine
  vdpa: move memory listener register to vhost_vdpa_init
  vdpa: move iova_tree allocation to net_vhost_vdpa_init
  vdpa: reorder listener assignment
  vdpa: add listener_registered
  vdpa: set backend capabilities at vhost_vdpa_init
  vdpa: reorder vhost_vdpa_set_backend_cap
  vdpa: check for iova tree initialized at net_client_start
  vhost: Don't set vring call if guest notifier is unused
  tests/qtest/bios-tables-test: Use MiB macro rather hardcode value
  tests/data/uefi-boot-images: Add ISO image for LoongArch system
  uefi-test-tools:: Add LoongArch64 support
  pci: Add a PCI-level API for PRI
  pci: Add a pci-level API for ATS
  pci: Add a pci-level initialization function for IOMMU notifiers
  memory: Store user data pointer in the IOMMU notifiers
  pci: Add an API to get IOMMU's min page size and virtual address width
  pci: Cache the bus mastering status in the device
  pcie: Helper functions to check to check if PRI is enabled
  pcie: Add a helper to declare the PRI capability for a pcie device
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2025-06-02 14:52:44 -04:00
commit 6322b753f7
19 changed files with 764 additions and 106 deletions
Download patch file Download diff file Expand all files Collapse all files

22
include/hw/virtio/vhost-vdpa.h
View file

@ -43,7 +43,21 @@ typedef struct vhost_vdpa_shared {
struct vhost_vdpa_iova_range iova_range;
QLIST_HEAD(, vdpa_iommu) iommu_list;
/* IOVA mapping used by the Shadow Virtqueue */
/*
* IOVA mapping used by the Shadow Virtqueue
*
* It is shared among all ASID for simplicity, whether CVQ shares ASID with
* guest or not:
* - Memory listener need access to guest's memory addresses allocated in
* the IOVA tree.
* - There should be plenty of IOVA address space for both ASID not to
* worry about collisions between them. Guest's translations are still
* validated with virtio virtqueue_pop so there is no risk for the guest
* to access memory that it shouldn't.
*
* To allocate a iova tree per ASID is doable but it complicates the code
* and it is not worth it for the moment.
*/
VhostIOVATree *iova_tree;
/* Copy of backend features */
@ -51,6 +65,12 @@ typedef struct vhost_vdpa_shared {
bool iotlb_batch_begin_sent;
/*
* The memory listener has been registered, so DMA maps have been sent to
* the device.
*/
bool listener_registered;
/* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */
bool shadow_data;