On 01/04/2018 10:34 AM, Andrea Arcangeli wrote: > On Thu, Jan 04, 2018 at 09:56:47AM -0800, Tim Chen wrote: >> There are 2 ways to control IBRS >> >> 1. At boot time >> noibrs kernel boot parameter will disable IBRS usage >> >> Otherwise if the above parameters are not specified, the system >> will enable ibrs and ibpb usage if the cpu supports it. >> >> 2. At run time >> echo 0 > /sys/kernel/debug/ibrs_enabled will turn off IBRS >> echo 1 > /sys/kernel/debug/ibrs_enabled will turn on IBRS in kernel >> echo 2 > /sys/kernel/debug/ibrs_enabled will turn on IBRS in both >> userspace and kernel > > debug/x86/? > > Reviewed-by: Andrea Arcangeli <aarca...@redhat.com> > > Thanks, > Andrea >
Yes, will correct. Thanks.
