TLSF usage issue on rv-virt target

[yf13]

It seems that TLSF heap manager doesn't work well with rv-virt on Ubuntu 22.04.

Reproduce:

• Used configurations: rv-virt/knsh64, rv-virt/knsh32, or rv-virt/nsh64
• Before building, do kconfig-tweak -e MM_TLSF_MANAGER -d MM_DEFAULT_MANAGER to enable TLSF manager.
• Build nuttx,
• Run nuttx with qemu 6,2 but can't see NSH> prompt.

Please teach if the usage is incorrect.

[acassis]

@masayuki2009 @lupyuen did you see this issue?

[xiaoxiang781216]

this is due to compiler generate infinite recursion for ffs on RISCV, @Gary-Hobson will provide a patch fix it.

[Gary-Hobson]

@yf13 The fixed patch has been submitted #12263

You can add the -s -S parameter after the qemu startup command to connect to gdb for debugging

qemu-system-riscv64 -semihosting -M virt,aclint=on -cpu rv64 -smp 8 -bios none -kernel nuttx -nographic -S -s
gdb-multiarch nuttx  -ex "target remote 127.0.0.1:1234"