> From: Sergey Dyasli [mailto:[email protected]] > Sent: Tuesday, November 6, 2018 8:08 PM > > Currently Xen tries to map bitmaps during emulation of vmptrld and > vmwrite. This is wrong: a guest can store arbitrary values in those > fields. > > Make bitmaps mapping happen only during a nested vmentry and only if > the appropriate execution controls are turned on by L1 hypervisor. > > For performance reasons, Xen maps bitmaps only: > > 1. During the first nested vmentry > 2. After L1 has changed an appropriate vmcs field > 3. After nvmx_purge_vvmcs() was previously called > > Signed-off-by: Sergey Dyasli <[email protected]>
Acked-by: Kevin Tian <[email protected]> _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
