On Thu, Feb 8, 2024 at 4:20 PM Petr Beneš <w1be...@gmail.com> wrote: > > From: Petr Beneš <w1be...@gmail.com> > > This patch addresses an issue where the fast singlestep setting would persist > despite xc_domain_debug_control being called with > XEN_DOMCTL_DEBUG_OP_SINGLE_STEP_OFF. > Specifically, if fast singlestep was enabled in a VMI session and that session > stopped before the MTF trap occurred, the fast singlestep setting remained > active even though MTF itself was disabled. This led to a situation where, > upon > starting a new VMI session, the first event to trigger an EPT violation would > cause the corresponding EPT event callback to be skipped due to the lingering > fast singlestep setting. > > The fix ensures that the fast singlestep setting is properly reset when > disabling single step debugging operations. > > Signed-off-by: Petr Beneš <w1be...@gmail.com>
Thanks, this has been a known bug that awaited a fix for a long time. Reviewed-by: Tamas K Lengyel <ta...@tklengyel.com>
