On 26.05.2022 13:11, Roger Pau Monne wrote: > Add support for enabling Bus Lock Detection on Intel systems. Such > detection works by triggering a vmexit, which ought to be enough of a > pause to prevent a guest from abusing of the Bus Lock. > > Add an extra Xen perf counter to track the number of Bus Locks detected. > This is done because Bus Locks can also be reported by setting the bit > 26 in the exit reason field, so also account for those. > > Suggested-by: Andrew Cooper <andrew.coop...@citrix.com> > Signed-off-by: Roger Pau Monné <roger....@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com> This implements just the VMexit part of the feature - maybe the title wants to reflect that? The vmx: tag could also mean there is exposure to guests included for the #DB part of the feature. Jan
