On 07.08.2024 17:39, Matthew Barnes wrote:
> When hardware breakpoints are configured on misaligned IO ports, the
> hardware will mask the addresses based on the breakpoint width during
> comparison.
>
> For PV guests, misaligned IO breakpoints do not behave the same way, and
> therefore yield different results.
>
> This patch tweaks the emulation of IO breakpoints for PV guests such
> that they reproduce the same behaviour as hardware.
>
> Fixes: bec9e3205018 ("x86: emulate I/O port access breakpoints")
> Signed-off-by: Matthew Barnes <[email protected]>
Reviewed-by: Jan Beulich <[email protected]>
