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Gao Shiyuan 55fa4be6f7 virtio-pci: fix memory_region_find for VirtIOPCIRegion's MR 
As shown below, if a virtio PCI device is attached under a pci-bridge, the MR
of VirtIOPCIRegion does not belong to any address space. So memory_region_find
cannot be used to search for this MR.

Introduce the virtio-pci and pci_bridge address spaces to solve this problem.

Before:
memory-region: pci_bridge_pci
  0000000000000000-ffffffffffffffff (prio 0, i/o): pci_bridge_pci
    00000000fe840000-00000000fe840fff (prio 1, i/o): virtio-net-pci-msix
      00000000fe840000-00000000fe84003f (prio 0, i/o): msix-table
      00000000fe840800-00000000fe840807 (prio 0, i/o): msix-pba
    0000380000000000-0000380000003fff (prio 1, i/o): virtio-pci
      0000380000000000-0000380000000fff (prio 0, i/o): virtio-pci-common-virtio-net
      0000380000001000-0000380000001fff (prio 0, i/o): virtio-pci-isr-virtio-net
      0000380000002000-0000380000002fff (prio 0, i/o): virtio-pci-device-virtio-net
      0000380000003000-0000380000003fff (prio 0, i/o): virtio-pci-notify-virtio-net

After:
address-space: virtio-pci-cfg-mem-as
  0000380000000000-0000380000003fff (prio 1, i/o): virtio-pci
    0000380000000000-0000380000000fff (prio 0, i/o): virtio-pci-common-virtio-net
    0000380000001000-0000380000001fff (prio 0, i/o): virtio-pci-isr-virtio-net
    0000380000002000-0000380000002fff (prio 0, i/o): virtio-pci-device-virtio-net
    0000380000003000-0000380000003fff (prio 0, i/o): virtio-pci-notify-virtio-net

address-space: pci_bridge_pci_mem
  0000000000000000-ffffffffffffffff (prio 0, i/o): pci_bridge_pci
    00000000fe840000-00000000fe840fff (prio 1, i/o): virtio-net-pci-msix
      00000000fe840000-00000000fe84003f (prio 0, i/o): msix-table
      00000000fe840800-00000000fe840807 (prio 0, i/o): msix-pba
    0000380000000000-0000380000003fff (prio 1, i/o): virtio-pci
      0000380000000000-0000380000000fff (prio 0, i/o): virtio-pci-common-virtio-net
      0000380000001000-0000380000001fff (prio 0, i/o): virtio-pci-isr-virtio-net
      0000380000002000-0000380000002fff (prio 0, i/o): virtio-pci-device-virtio-net
      0000380000003000-0000380000003fff (prio 0, i/o): virtio-pci-notify-virtio-net

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2576
Fixes: ffa8a3e3b2 ("virtio-pci: Add lookup subregion of VirtIOPCIRegion MR")
Co-developed-by: Zuo Boqun <zuoboqun@baidu.com>
Signed-off-by: Zuo Boqun <zuoboqun@baidu.com>
Co-developed-by: Wang Liang <wangliang44@baidu.com>
Signed-off-by: Wang Liang <wangliang44@baidu.com>
Signed-off-by: Gao Shiyuan <gaoshiyuan@baidu.com>
Message-Id: <20241030131324.34144-1-gaoshiyuan@baidu.com>
Tested-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 		2024-11-04 16:03:24 -05:00
..
authz Prefer 'on' | 'off' over 'yes' | 'no' for bool options 2021-01-29 17:07:53 +00:00
block include: Move QemuLockCnt APIs to their own header 2024-10-15 15:16:17 +01:00
chardev chardev/mux: convert size members to unsigned int 2024-10-15 12:26:01 +04:00
crypto include/crypto: clarify @result/@result_len for hash/hmac APIs 2024-10-22 11:44:23 +01:00
disas disas: Remove CRIS disassembler 2024-10-07 11:33:20 +02:00
exec softmmu: Expand comments describing max_bounce_buffer_size 2024-11-04 09:22:58 -05:00
fpu fpu: Add conversions between bfloat16 and [u]int8 2023-09-16 14:57:15 +00:00
gdbstub gdbstub/helpers: Introduce ldtul_$endian_p() helpers 2024-10-15 11:55:09 -03:00
hw virtio-pci: fix memory_region_find for VirtIOPCIRegion's MR 2024-11-04 16:03:24 -05:00
io qio: add support for SO_PEERCRED for socket channel 2024-07-22 13:47:41 +02:00
libdecnumber Replace config-time define HOST_WORDS_BIGENDIAN 2022-04-06 10:50:37 +02:00
migration migration: Remove unused VMSTATE_ARRAY_TEST() macro 2024-06-21 14:37:58 -03:00
monitor monitor: Remove obsolete stubs 2024-06-30 19:51:44 +03:00
net net: Remove deadcode 2024-10-03 17:26:05 +03:00
qapi qerror: QERR_PROPERTY_VALUE_OUT_OF_RANGE is no longer used, drop 2024-10-18 15:03:35 +02:00
qemu sockets: Remove deadcode 2024-10-22 11:44:23 +01:00
qom qom: update object_resolve_path*() documentation 2024-10-03 22:04:24 +02:00
scsi hw/ufs: Support for UFS logical unit 2023-09-07 14:01:29 -04:00
semihosting semihosting: Include missing 'gdbstub/syscalls.h' header 2024-07-22 09:38:01 +01:00
standard-headers linux-headers: update to 6.10-rc1 2024-07-01 17:16:04 -04:00
sysemu KVM: Rename KVMState->nr_slots to nr_slots_max 2024-10-17 19:41:30 +02:00
tcg tcg/riscv: Add basic support for vector 2024-10-22 11:57:25 -07:00
ui ui: refactor using a common qemu_pixman_shareable 2024-10-14 17:34:09 +04:00
user linux-user: Remove support for CRIS target 2024-09-13 20:10:50 +02:00
elf.h util: spelling fixes 2023-08-31 19:47:43 +02:00
glib-compat.h Bump minimum glib version to v2.66 2024-05-14 12:46:24 +02:00
qemu-io.h Include qemu-common.h exactly where needed 2019-06-12 13:20:20 +02:00
qemu-main.h ui/cocoa: Run qemu_init in the main thread 2022-09-23 14:36:33 +02:00