port-xen/55285: XEN3_DOM0 panics with GSI fail

[prlw1%cam.ac.uk@localhost]

>Number:         55285
>Category:       port-xen
>Synopsis:       XEN3_DOM0 panics with GSI fail
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-xen-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri May 22 16:00:00 +0000 2020
>Originator:     Patrick Welche
>Release:        NetBSD-9.99.63/amd64 of 22 May 2020
>Organization:
>Environment:
Xen 4.11.3nb2

>Description:
Booting a standard XEN3_DOM0 kernel, i.e., with the default

options         NO_PCI_MSI_MSIX

panics with

[   1.0000030] ahcisata0 at pci1 dev 0 function 1: vendor 1022 product 43b5 (rev. 0x02)
[   1.0000030] ahcisata0: AHCI revision 1.31, 8 ports, 32 slots, CAP 0xef36ff27<SXS,PSC,SSC,PMD,SPM,SAM,ISS=0x3=Gen3,SCLO,SAL,SALP,SSS,SSNTF,SNCQ,S64A>
[   1.0000030] panic: physdev_op(PHYSDEVOP_map_pirq) GSI fail -17
[   1.0000030] got here 1
[   1.0000030] got here 3
[   1.0000030] cpu0: Begin traceback...
[   1.0000030] vpanic() at netbsd:vpanic+0x166
[   1.0000030] snprintf() at netbsd:snprintf
[   1.0000030] xen_pic_to_gsi() at netbsd:xen_pic_to_gsi+0x134
[   1.0000030] intr_establish_xname() at netbsd:intr_establish_xname+0x8e
[   1.0000030] pci_intr_establish_xname_internal() at netbsd:pci_intr_establish_xname_internal+0x8f
[   1.0000030] ahci_pci_intr_establish() at netbsd:ahci_pci_intr_establish+0x1ac
[   1.0000030] ahci_attach() at netbsd:ahci_attach+0x2fc
[   1.0000030] ahci_pci_attach() at netbsd:ahci_pci_attach+0x21a
[   1.0000030] config_attach_loc() at netbsd:config_attach_loc+0x17a
[   1.0000030] pci_probe_device() at netbsd:pci_probe_device+0x533
[   1.0000030] pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x1b7
[   1.0000030] pcirescan() at netbsd:pcirescan+0x4e
[   1.0000030] pciattach() at netbsd:pciattach+0x186
[   1.0000030] config_attach_loc() at netbsd:config_attach_loc+0x17a
[   1.0000030] ppbattach() at netbsd:ppbattach+0x1c5
[   1.0000030] config_attach_loc() at netbsd:config_attach_loc+0x17a
[   1.0000030] pci_probe_device() at netbsd:pci_probe_device+0x533
[   1.0000030] pci_enumerate_bus() at netbsd:pci_enumerate_bus+0x1b7
[   1.0000030] pcirescan() at netbsd:pcirescan+0x4e
[   1.0000030] pciattach() at netbsd:pciattach+0x186
[   1.0000030] config_attach_loc() at netbsd:config_attach_loc+0x17a
[   1.0000030] mp_pci_scan() at netbsd:mp_pci_scan+0xa4
[   1.0000030] hypervisor_attach() at netbsd:hypervisor_attach+0x3df
[   1.0000030] config_attach_loc() at netbsd:config_attach_loc+0x17a
[   1.0000030] xen_mainbus_attach() at netbsd:xen_mainbus_attach+0x51
[   1.0000030] mainbus_attach() at netbsd:mainbus_attach+0x49
[   1.0000030] config_attach_loc() at netbsd:config_attach_loc+0x17a
[   1.0000030] cpu_configure() at netbsd:cpu_configure+0x25
[   1.0000030] main() at netbsd:main+0x2ec
[   1.0000030] cpu0: End traceback...
[   1.0000030] fatal breakpoint trap in supervisor mode
[   1.0000030] trap type 1 code 0 rip 0xffffffff8023a8fd cs 0xe030 rflags 0x202 cr2 0 ilevel 0x8 rsp 0xffffffff818dc040
[   1.0000030] curlwp 0xffffffff80ddf340 pid 0.0 lowest kstack 0xffffffff818d82c0

db{0}> show reg
ds          c050
es          c000
fs          c040
gs          10
rdi         8
rsi         1
rbp         ffffffff818dc040
rbx         104
rdx         1
rcx         32ea
rax         1
r8          104
r9          1e
r10         75
r11         0
r12         ffffffff80bd69e0    ostype+0x3d8
r13         ffffffff818dc088
r14         ffffffff818dc2e8
r15         0
rip         ffffffff8023a8fd    breakpoint+0x5
cs          e030
rflags      202
rsp         ffffffff818dc040
ss          e02b
netbsd:breakpoint+0x5:  leave


Don't know if this is relevant:
(XEN) ACPI: 32/64X FACS address mismatch in FADT - da8d9d80/0000000000000000, using 32


>How-To-Repeat:
Boot a XEN3_DOM0 kernel.
>Fix: