Files
cloud-hypervisor/vmm
Chris Webb 7b29691932 vmm: return all-ones for unregistered PIO reads
When reading from an unregistered PIO address, pio_read() wasn't
initialising the buffer, so guests were reading stale bytes from the
previous PIO transaction rather than all 0xff bytes like master abort
on real hardware.

Fill data with 0xff on invalid reads.

Correct 'read to unregistered address' info message to 'read from
unregistered address' while we're touching this block.

Signed-off-by: Chris Webb <chris@arachsys.com>
2026-05-16 15:40:55 +00:00
..