Hart isolation configuration failure (error -3) with OpenSBI 1.8 on QEMU 10.1.3 rva22s64/rva23s64 profiles

[Thomas Perrot <thomas.perrot@bootlin.com>]

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Hello,

Happy New Year!

I'm facing a hart isolation configuration error when running OpenSBI
1.8 on QEMU 10.1.3 with the RISC-V application profiles rva22s64 and
rva23s64:

    init_coldboot: hart isolation configure failed (error -3)

No issue occurs when using the rv64 profile. The system continues to
boot after the error, but I'd like to understand the root cause.

I haven't tested OpenSBI 1.8 on real hardware yet - that's my next
step.

Is there a known QEMU issue? Is there a recommended workaround besides
using rv64?

Below is the complete trace:

qemu-system-riscv64 -device virtio-net-
device,netdev=net0,mac=52:54:00:12:35:02 -netdev
user,id=net0,hostfwd=tcp:127.0.0.1:2222-:22,hostfwd=tcp:127.0.0.1:2323-
:23,tftp=/src/build/tmp/deploy/images/qemuriscv64 -object rng-
random,filename=/dev/urandom,id=rng0 -device virtio-rng-pci,rng=rng0 -
drive id=disk0,file=/src/build/tmp/deploy/images/qemuriscv64/core-
image-minimal-qemuriscv64.rootfs-20260105173847.ext4,if=none,format=raw
-device virtio-blk-device,drive=disk0 -device qemu-xhci -device usb-
tablet -device usb-kbd  -machine virt -cpu rva23s64 -smp 4 -m 256 -
snapshot -serial mon:stdio -serial null -nographic -device bochs-
display -bios /src/build/tmp/deploy/images/qemuriscv64/fw_jump.elf -
kernel /src/build/tmp/deploy/images/qemuriscv64/Image -append
'root=/dev/vda rw  mem=256M ip=dhcp console=ttyS0 console=hvc0
earlycon=sbi swiotlb=0

OpenSBI v1.8
   ____                    _____ ____ _____
  / __ \                  / ____|  _ \_   _|
 | |  | |_ __   ___ _ __ | (___ | |_) || |
 | |  | | '_ \ / _ \ '_ \ \___ \|  _ < | |
 | |__| | |_) |  __/ | | |____) | |_) || |_
  \____/| .__/ \___|_| |_|_____/|____/_____|
        | |
        |_|

Platform Name               : riscv-virtio,qemu
Platform Features           : medeleg
Platform HART Count         : 4
Platform HART Protection    : ---
Platform IPI Device         : aclint-mswi
Platform Timer Device       : aclint-mtimer @ 10000000Hz
Platform Console Device     : uart8250
Platform HSM Device         : ---
Platform PMU Device         : ---
Platform Reboot Device      : syscon-reboot
Platform Shutdown Device    : syscon-poweroff
Platform Suspend Device     : ---
Platform CPPC Device        : ---
Firmware Base               : 0x80000000
Firmware Size               : 357 KB
Firmware RW Offset          : 0x40000
Firmware RW Size            : 101 KB
Firmware Heap Offset        : 0x4d000
Firmware Heap Size          : 49 KB (total), 0 KB (reserved), 13 KB
(used), 35 KB (free)
Firmware Scratch Size       : 4096 B (total), 1464 B (used), 2632 B
(free)
Runtime SBI Version         : 3.0
Standard SBI Extensions     :
time,rfnc,ipi,base,hsm,srst,pmu,dbcn,fwft,legacy,dbtr,sse
Experimental SBI Extensions : none

Domain0 Name                : root
Domain0 Boot HART           : 0
Domain0 HARTs               : 0*,1*,2*,3*
Domain0 Region00            : 0x0000000080040000-0x000000008005ffff M:
(F,R,W) S/U: ()
Domain0 Region01            : 0x0000000080000000-0x000000008003ffff M:
(F,R,X) S/U: ()
Domain0 Region02            : 0x0000000000100000-0x0000000000100fff M:
(I,R,W) S/U: (R,W)
Domain0 Region03            : 0x0000000010000000-0x0000000010000fff M:
(I,R,W) S/U: (R,W)
Domain0 Region04            : 0x0000000002000000-0x000000000200ffff M:
(I,R,W) S/U: ()
Domain0 Region05            : 0x000000000c400000-0x000000000c5fffff M:
(I,R,W) S/U: (R,W)
Domain0 Region06            : 0x000000000c000000-0x000000000c3fffff M:
(I,R,W) S/U: (R,W)
Domain0 Region07            : 0x0000000000000000-0xffffffffffffffff M:
() S/U: (R,W,X)
Domain0 Next Address        : 0x0000000080200000
Domain0 Next Arg1           : 0x0000000082200000
Domain0 Next Mode           : S-mode
Domain0 SysReset            : yes
Domain0 SysSuspend          : yes

Boot HART ID                : 0
Boot HART Domain            : root
Boot HART Priv Version      : v1.12
Boot HART Base ISA          : rv64imafdcbvh
Boot HART ISA Extensions    :
smstateen,sscofpmf,sstc,zicntr,zihpm,zicboz,zicbom,svpbmt,sdtrig,svade,
smnpm,ssstateen
Boot HART PMP Count         : 0
Boot HART PMP Granularity   : 0 bits
Boot HART PMP Address Bits  : 0
Boot HART MHPM Info         : 16 (0x0007fff8)
Boot HART Debug Triggers    : 2 triggers
Boot HART MIDELEG           : 0x0000000000003666
Boot HART MEDELEG           : 0x0000000000f4b509
init_coldboot: hart isolation configure failed (error -3)

Kind regards,
Thomas Perrot
-- 
Thomas Perrot, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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