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Wanpeng Qian 75b1f96772 bhyve: restore the BARs at the addresses the guest gave them 
A restore set the addresses in the BARs and the command register to
those of the snapshot, but left the regions registered where
pci_emul_alloc_bar() had put them when bhyve started.  That is only
right for a guest that kept bhyve's addresses.  The UEFI firmware moves
64-bit BARs above 4 GB, and after a restore every access to such a BAR
went nowhere:

  Emulating access to non-existent address to 0x800001014

Before the devices are restored, unregister the regions of all of them;
when a device is restored, register its regions at the restored
addresses, if the restored command register enables them.  All devices
go first because a restored BAR may be where another device's BAR is
before the restore.

Signed-off-by: Wanpeng Qian <[email protected]>
Sponsored by:	keelos.dev
Reviewed by:	bnovkov
Differential Revision:	https://reviews.freebsd.org/D60235
MFC after:	2 weeks
Tested by:	bnovkov
2026-11-04 18:33:44 +01:00
..
aarch64
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
amd64
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
gdb
Update Makefile.depend files
2024-10-14 10:26:17 -07:00
kbdlayout
Remove residual blank line at start of Makefile
2024-07-15 16:43:39 -06:00
riscv
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
slirp
bhyve: support MTU configuration for SLIRP net backend
2026-01-08 18:01:13 +01:00
acpi_device.c
spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD
2023-05-12 10:44:03 -06:00
acpi_device.h
spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD
2023-05-12 10:44:03 -06:00
acpi.c
bhyve: Add support for specifying guest NUMA configuration
2025-07-27 18:31:48 +02:00
acpi.h
bhyve/acpi: Mark dsdt_line as 'printflike'
2025-07-27 18:31:49 +02:00
ahci.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
audio.c
bhyve/audio.c: avoid re-calculating the length of dev_name
2023-12-26 09:36:31 -07:00
audio.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
basl.c
bhyve: add config option to load ACPI tables into memory
2023-08-22 07:49:00 +02:00
basl.h
bhyve: maintain RSDT and XSDT by basl
2023-06-20 10:56:23 +02:00
bhyve_config.5
bhyvectl: support querying VM pid
2026-09-19 16:19:35 +00:00
bhyve.8
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
bhyvegc.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
bhyvegc.h
bhyve: Fix handling of framebuffer resizing
2026-10-14 16:00:47 +00:00
bhyverun.c
bhyve: Add an option to prevent automatic restart in monitor mode
2026-09-18 12:28:32 +02:00
bhyverun.h
bhyve: add deprecation warning function
2026-08-11 14:15:02 +00:00
block_if.c
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
block_if.h
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
bootrom.c
bhyve: Add support for specifying guest NUMA configuration
2025-07-27 18:31:48 +02:00
bootrom.h
bhyve: Make boot ROM handling more consistent
2024-08-19 13:55:47 +00:00
config_schema.c
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
config_schema.h
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
config.c
bhyve: Want walk_config_nodes
2026-01-16 10:48:34 -04:00
config.h
bhyve: Want walk_config_nodes
2026-01-16 10:48:34 -04:00
console.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
console.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
debug.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
gdb.c
bhyve: fix integer overflow in qXfer packet parser
2026-10-19 18:53:53 +00:00
gdb.h
bhyve: refactor gdbstub to enable single-stepping on AMD CPUs
2023-12-12 15:28:59 -08:00
hda_codec.c
bhyve: improve bounds checks in hda_codec
2024-10-03 17:14:11 -04:00
hda_reg.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
hdac_reg.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
iov.c
bhyve: Fix assignment of *niov2 in split_iov()
2026-08-05 18:58:32 +00:00
iov.h
bhyve/virtio: Fix comparison of integer expressions of different signedness
2026-04-01 15:05:26 -04:00
ipc.c
bhyvectl: support querying VM pid
2026-09-19 16:19:35 +00:00
ipc.h
bhyve: Generalize the IPC thread
2026-08-23 14:02:49 +02:00
Makefile
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
Makefile.depend
Remove $FreeBSD$: one-line sh pattern
2023-08-16 11:55:03 -06:00
Makefile.depend.options
Remove $FreeBSD$: one-line sh pattern
2023-08-16 11:55:03 -06:00
mem_md.c
bhyve: make code to handle non-backed memory accesses MD
2025-05-15 17:01:40 +03:00
mem.c
bhyve: make code to handle non-backed memory accesses MD
2025-05-15 17:01:40 +03:00
mem.h
bhyve: make code to handle non-backed memory accesses MD
2025-05-15 17:01:40 +03:00
mevent_test.c
bhyve: Eliminate exit status magic numbers
2025-12-17 15:08:32 +01:00
mevent.c
bhyve: Eliminate exit status magic numbers
2025-12-17 15:08:32 +01:00
mevent.h
bhyve: Extend mevent to support updating timers
2024-04-10 11:17:56 -04:00
net_backend_netgraph.c
bhyve: Split backends into separate files
2023-11-22 15:18:46 -05:00
net_backend_netmap.c
bhyve: Split backends into separate files
2023-11-22 15:18:46 -05:00
net_backend_slirp.c
bhyve: support MTU configuration for SLIRP net backend
2026-01-08 18:01:13 +01:00
net_backends_priv.h
bhyve: Split backends into separate files
2023-11-22 15:18:46 -05:00
net_backends.c
bhyve/virtio: Rework iovec handling functions for efficiency and clarity
2026-03-04 12:30:02 -05:00
net_backends.h
bhyve: Split backends into separate files
2023-11-22 15:18:46 -05:00
net_utils.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
net_utils.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
pci_ahci.c
bhyve ahci: Improve robustness of TRIM handling
2024-10-24 10:18:09 -04:00
pci_e82545.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
pci_emul.c
bhyve: restore the BARs at the addresses the guest gave them
2026-11-04 18:33:44 +01:00
pci_emul.h
bhyve: restore the BARs at the addresses the guest gave them
2026-11-04 18:33:44 +01:00
pci_fbuf.c
bhyve: Fix handling of framebuffer resizing
2026-10-14 16:00:47 +00:00
pci_hda.c
bhyve: Improve HDA stream descriptor validation
2026-10-14 16:00:47 +00:00
pci_hda.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
pci_hostbridge.c
Remove $FreeBSD$: one-line .c pattern
2023-08-16 11:54:42 -06:00
pci_irq.h
bhyve/riscv: Initial import.
2024-10-31 20:24:12 +00:00
pci_nvme.c
bhyve: add command to list config options
2026-10-24 13:01:53 +02:00
pci_passthru_quirks.c
bhyve: assign a valid INTPIN to NVIDIA GPUs
2025-09-16 08:55:09 +02:00
pci_passthru.c
bhyve: Remove unneeded include of <machine/iodev.h>
2026-10-08 11:20:45 -04:00
pci_passthru.h
bhyve: add interface to protect BAR regions of passthru devices
2025-08-05 16:02:09 +02:00
pci_uart.c
bhyve: pci-uart needs to also set subclass and function
2025-12-11 10:11:50 +02:00
pci_virtio_9p.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
pci_virtio_block.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
pci_virtio_console.c
bhyve: Defer virtio-console PORT_NAME until the guest is ready
2026-09-30 15:53:51 +00:00
pci_virtio_input.c
bhyve: Fix virtio-input event array resizing
2026-10-19 15:29:13 +00:00
pci_virtio_net.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
pci_virtio_rnd.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
pci_virtio_scsi_ctl.c
bhyve/virtio-scsi: Support multiple backends
2026-05-26 16:03:12 +00:00
pci_virtio_scsi.c
bhyve/virtio-scsi: Make all I/O processing parameters configurable
2026-05-26 16:03:12 +00:00
pci_virtio_scsi.h
bhyve/virtio-scsi: Make all I/O processing parameters configurable
2026-05-26 16:03:12 +00:00
pci_xhci.c
bhyve: Fix handling of the xhci event ring
2026-10-14 16:00:47 +00:00
pci_xhci.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
pciids_intel_gpus.h
bhyve: add PCI IDs of Intel GPUs from Linux v6.15
2025-06-24 08:13:29 +02:00
pctestdev.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
pctestdev.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
qemu_fwcfg.c
bhyve: fix buffer overflow in QemuFwCfg
2023-10-17 15:57:28 +02:00
qemu_fwcfg.h
spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD
2023-05-12 10:44:03 -06:00
qemu_loader.c
bhyve: add helper struct for qemus acpi table loader
2023-04-25 08:29:25 +02:00
qemu_loader.h
bhyve: add helper struct for qemus acpi table loader
2023-04-25 08:29:25 +02:00
rfb.c
bhyve: Fix handling of framebuffer resizing
2026-10-14 16:00:47 +00:00
rfb.h
bhyve: add UNIX domain socket support to rfb
2026-01-08 15:24:52 +00:00
rtc_pl031.c
bhyve: rtc_pl031: Fix PeriphID and CellID values
2026-08-07 14:04:30 +01:00
rtc_pl031.h
bhyve: Implement a PL031 RTC on arm64
2024-04-10 11:17:56 -04:00
smbiostbl.c
bhyve: add configurable SMBIOS OEM Strings
2026-07-18 15:07:07 -07:00
smbiostbl.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
snapshot.c
bhyve: restore the BARs at the addresses the guest gave them
2026-11-04 18:33:44 +01:00
snapshot.h
bhyve: Generalize the IPC thread
2026-08-23 14:02:49 +02:00
sockstream.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
sockstream.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00
tpm_device.c
bhyve: add cmdline option for TPM emulation
2023-08-17 08:17:59 +02:00
tpm_device.h
bhyve: add cmdline option for TPM emulation
2023-08-17 08:17:59 +02:00
tpm_emul_passthru.c
bhyve: emulate TPM passthru by accessing /dev/tpmX
2023-08-10 09:23:42 +02:00
tpm_emul_swtpm.c
bhyve: TPM 2.0 emulation with swtpm
2024-10-22 14:04:24 +02:00
tpm_emul.h
bhyve/tpm: create crb thread for sending tpm commands
2023-06-20 10:59:00 +02:00
tpm_intf_crb.c
bhyve: tpm: allow the last dword of the CRB command buffer
2026-09-15 09:04:28 -05:00
tpm_intf.h
bhyve: add emulation for CRB register of TPM devices
2023-08-10 09:23:33 +02:00
tpm_ppi_qemu.c
bhyve/tpm_ppi_qemu: Cast address of the TPP3 field to uint32_t
2025-07-27 18:31:49 +02:00
tpm_ppi.h
bhyve: add Qemu PPI emulation for TPM devices
2023-08-14 10:17:36 +02:00
uart_backend.c
bhyve uart: Fix errors from GCC
2024-10-02 17:31:59 -04:00
uart_backend.h
bhyve: Move lock of uart frontend to uart backend
2024-05-01 11:09:31 -04:00
uart_emul.c
bhyve: Move lock of uart frontend to uart backend
2024-05-01 11:09:31 -04:00
uart_emul.h
bhyve: Add PL011 UART emulation
2024-04-10 11:17:55 -04:00
uart_pl011.c
bhyve: Move lock of uart frontend to uart backend
2024-05-01 11:09:31 -04:00
usb_emul.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
usb_emul.h
bhyve: Populate the device version from the backend
2025-08-09 23:15:41 -04:00
usb_mouse.c
bhyve: fix USB mouse requests
2026-02-19 14:27:49 -08:00
virtio.c
bhyve: check paddr_guest2host return in _vq_record
2026-11-04 17:53:03 +01:00
virtio.h
usr.sbin: Remove repeated words
2024-04-11 11:53:37 -06:00
vmexit.h
bhyve: Split vmexit handling into a separate file
2023-10-04 12:53:16 -04:00
vmgenc.c
usr.sbin: Automated cleanup of cdefs and other formatting
2023-11-26 22:24:01 -07:00
vmgenc.h
Remove $FreeBSD$: two-line .h pattern
2023-08-16 11:54:16 -06:00