[v2,0/4] This patch-set is to enable Guest

Message

Yang, Weijiang Jan. 22, 2019, 9:06 p.m. UTC

Control-flow Enforcement Technology (CET) provides protection against
return/jump-oriented programming (ROP) attacks. To make kvm Guest OS own
the capability, this patch-set is required. It enables CET related CPUID
report and xsaves/xrstors support etc in qemu.

Changelog:
 v2:
 - In CPUID.(EAX=d, ECX=1), set return ECX[n] = 0 if bit n corresponds 
   to a bit in MSR_IA32_XSS.
 - In CPUID.(EAX=d, ECX=n), set return ECX = 1 if bit n corresponds
   to a bit in MSR_IA32_XSS.
 - Skip Supervisor mode xsave component when calculate User mode
   xave component size in xsave_area_size() and x86_cpu_reset(). 

Yang Weijiang (4):
  Add CET xsaves/xrstors related macros and structures.
  Add CET SHSTK and IBT CPUID feature-word definitions.
  Add hepler functions for CPUID xsave area size calculation.
  Report CPUID xsave area support for CET.

 target/i386/cpu.c | 73 +++++++++++++++++++++++++++++++++++++++++++++--
 target/i386/cpu.h | 36 ++++++++++++++++++++++-
 2 files changed, 105 insertions(+), 4 deletions(-)