Inspired by a similar feature in ARM's full system workload, this change adds
an option to halt gem5 simulation if the guest system encounter kernel panic
or kernel oops.
On RiscvISA::BootloaderKernelWorkload, by default, the simulation
will exit upon kernel panic, while kernel oops will not induce simulation halt.
This is because the system will essentially do nop after a kernel panic, while the
system might be still functional after a kernel oops.
Dumping kernel's dmesg is useful for diagonizing the cause of kernel panic, so
ideally, we want to dump the guest's dmesg to the host. However, due to a bug
described in [1], kernel v5.18+ dmesg might not be dumped properly. Hence, the
dmesg will not be dumped to the host.
On RiscvISA::FsLinux, this feature is turned off by default as the symbols from the
official RISC-V kernel resource are stripped from the binary. However, if this feature
is enable, the dmesg will be dumped to the host system.
[1] https://github.com/gem5/gem5/issues/550
Change-Id: I8f52257727a3a789ebf99fdd4dffe5b3d89f1ebf
Signed-off-by: Hoa Nguyen <hn@hnpl.org>
Co-authored-by: Jason Lowe-Power <jason@lowepower.com>
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