On 03.06.2022 16:29, Roger Pau Monné wrote: > On Fri, Jun 03, 2022 at 02:16:47PM +0200, Jan Beulich wrote: >> 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. > > Maybe: > > "x86/vmx: add Bus Lock detection to the hypervisor"
Fine with me. Jan
