Hello!
I am building OpenSBI from source (1.5.1) with no changes. The host is Ubuntu 24 (ARM64) running QEMU 9.1.2. When I attempt to boot FreeBSD, the kernel hangs in the kernel init process, somewhere in the CPU init machdep chain. It seems to hang on vm_fault_deallocate() but I am having trouble tracing this back to a source. It only hangs if the QEMU VM is configured to have multiple processors (harts). Every other hart except the boot hart is in WFI, idling, while the boot hart launches the kernel.
I'm unsure if this is a FreeBSD kernel issue with handling SMP or if this is an OpenSBI issue related to some delta between the OpenSBI typically used to boot FreeBSD versus the OpenSBI 1.5.1 built from source. The GCC version is 14.2.0 if it helps. Here is the most useful information that I can provide:
Any thoughts? I am stuck...
Thank you,
Don B
I am building OpenSBI from source (1.5.1) with no changes. The host is Ubuntu 24 (ARM64) running QEMU 9.1.2. When I attempt to boot FreeBSD, the kernel hangs in the kernel init process, somewhere in the CPU init machdep chain. It seems to hang on vm_fault_deallocate() but I am having trouble tracing this back to a source. It only hangs if the QEMU VM is configured to have multiple processors (harts). Every other hart except the boot hart is in WFI, idling, while the boot hart launches the kernel.
I'm unsure if this is a FreeBSD kernel issue with handling SMP or if this is an OpenSBI issue related to some delta between the OpenSBI typically used to boot FreeBSD versus the OpenSBI 1.5.1 built from source. The GCC version is 14.2.0 if it helps. Here is the most useful information that I can provide:
Code:
Copyright (c) 1992-2023 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8 GENERIC riscv
FreeBSD clang version 18.1.5 ([URL]https://github.com/llvm/llvm-project.git[/URL] llvmorg-18.1.5-0-g617a15a9eac9)
VT: init without driver.
SBI: OpenSBI v1.5
SBI Specification Version: 2.0
CPU 0 : Vendor=Unspecified Core=Unspecified (Hart 0)
marchid=0, mimpid=0
MMU: 0x7<Sv39,Sv48,Sv57>
ISA: 0x112d<Atomic,Compressed,Double,Float,Mult/Div>
S-mode Extensions: 0x1<Sstc>
real memory = 2147483648 (2048 MB)
avail memory = 2036912128 (1942 MB)
QEMU 9.1.2 monitor - type 'help' for more information
(qemu) info registers
CPU#0
V = 0
pc ffffffc00058c972
mhartid 0000000000000000
mstatus 8000000a00006180
hstatus 0000000200000000
vsstatus 0000000a00000000
mip 0000000000000000
mie 0000000000000008
mideleg 0000000000001666
hideleg 0000000000000000
medeleg 0000000000f0b509
hedeleg 0000000000000000
mtvec 00000000800004f0
stvec ffffffc000589850
vstvec 0000000000000000
mepc ffffffc00058c81e
sepc 00000000f5e00142
vsepc 0000000000000000
mcause 0000000000000009
scause 000000000000000c
vscause 0000000000000000
mtval 0000000000000000
stval 00000000f5e00142
htval 0000000000000000
mtval2 0000000000000000
mscratch 000000008004e000
sscratch 0000000000000000
satp 80000000000f64f2
x0/zero 0000000000000000 x1/ra ffffffc00058c910 x2/sp ffffffc000003d50 x3/gp ffffffc0007e2198
x4/tp ffffffc0009b1680 x5/t0 ffffffc0009b4d98 x6/t1 0000000080200000 x7/t2 00ff000000000000
x8/s0 ffffffc000003dc0 x9/s1 ffffffc0007e5920 x10/a0 0000000000000000 x11/a1 0000000000000001
x12/a2 0000000000000001 x13/a3 ffffffc000975a40 x14/a4 0000000000000000 x15/a5 0000000000000001
x16/a6 000000000000003f x17/a7 ffffffc000003b28 x18/s2 0000000000000001 x19/s3 0000000000000001
x20/s4 ffffffc00099e958 x21/s5 0000000100000000 x22/s6 0000000000000001 x23/s7 ffffffc0007e2ba0
x24/s8 ffffffc0005f9dfb x25/s9 0000000000000001 x26/s10 ffffffc00099e958 x27/s11 0000000000000002
x28/t3 000000000000ff00 x29/t4 fefefefefefefeff x30/t5 8080808080808080 x31/t6 000000000000062a
f0/ft0 ffffffff00000000 f1/ft1 ffffffff00000000 f2/ft2 ffffffff00000000 f3/ft3 ffffffff00000000
f4/ft4 ffffffff00000000 f5/ft5 ffffffff00000000 f6/ft6 ffffffff00000000 f7/ft7 ffffffff00000000
f8/fs0 ffffffff00000000 f9/fs1 ffffffff00000000 f10/fa0 ffffffff00000000 f11/fa1 ffffffff00000000
f12/fa2 ffffffff00000000 f13/fa3 ffffffff00000000 f14/fa4 ffffffff00000000 f15/fa5 ffffffff00000000
f16/fa6 ffffffff00000000 f17/fa7 ffffffff00000000 f18/fs2 ffffffff00000000 f19/fs3 ffffffff00000000
f20/fs4 ffffffff00000000 f21/fs5 ffffffff00000000 f22/fs6 ffffffff00000000 f23/fs7 ffffffff00000000
f24/fs8 ffffffff00000000 f25/fs9 ffffffff00000000 f26/fs10 ffffffff00000000 f27/fs11 ffffffff00000000
f28/ft8 ffffffff00000000 f29/ft9 ffffffff00000000 f30/ft10 ffffffff00000000 f31/ft11 ffffffff00000000
(qemu)Any thoughts? I am stuck...
Thank you,
Don B
