Re: [PATCH 1/1] cmd: add rdcycle test to RISC-V exception command

On Sun, Aug 11, 2024 at 04:41:23PM +0200, Heinrich Schuchardt wrote:

[EXTERNAL MAIL]

Some versions of KVM don't allow access to the cycle CSR.

Provide a command 'exception rdcycle' for testing.

If the cycle CSR is accessible, we get an output like:

=> exception rdcycle
cycle = 0x41f7563de

If the cycle CSR is not accessible, we get an output like:

=> exception rdcycle
Unhandled exception: Illegal instruction

Put subcommands into alphabetical order in long help.

Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com

cmd/riscv/exception.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-)

Reviewed-by: Leo Yu-Chi Liang ycliang@andestech.com