On 30.10.2017 18:01, Tamas K Lengyel wrote: > On Mon, Oct 30, 2017 at 4:32 AM, Alexandru Isaila > <aisa...@bitdefender.com> wrote: >> This patch is adding a way to enable/disable nested pagefault >> events. It introduces the xc_monitor_nested_pagefault function >> and adds the nested_pagefault_disabled in the monitor structure. >> This is needed by the introspection so it will only get gla >> faults and not get spammed with other faults. >> In p2m_set_ad_bits the v->arch.sse_pg_dirty.eip and >> v->arch.sse_pg_dirty.gla are used to mark that this is the >> second time a fault occurs and the dirty bit is set. > > Could you describe under what conditions do you get these other faults?
Hey Tamas, the whole story is at page 8 of this document: https://www.researchgate.net/publication/281835515_Proposed_Processor_Extensions_for_Significant_Speedup_of_Hypervisor_Memory_Introspection Thanks, Razvan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
