[patch V2 0/7] x86/kvm: RCU/context tracking and instrumentation protections
From: Thomas Gleixner
Date: Wed Jul 08 2020 - 15:53:40 EST
Folks,
this is a rebased and adopted version of the original series which is
available here:
https://lore.kernel.org/r/20200519203128.773151484@xxxxxxxxxxxxx
It deals with the RCU and context tracking state and the protection against
instrumentation in sensitive places:
- Placing the guest_enter/exit() calls at the correct place
- Moving the sensitive VMENTER/EXIT code into the non-instrumentable code
section.
- Fixup the tracing code to comply with the non-instrumentation rules
- Use native functions to access CR2 and the GS base MSR in the critical
code pathes to prevent them from being instrumented.
Thanks,
tglx