mbox series

[v7,0/6] Enable CET support for guest

Message ID 20210226022058.24562-1-weijiang.yang@intel.com (mailing list archive)
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Series Enable CET support for guest | expand

Message

Yang Weijiang Feb. 26, 2021, 2:20 a.m. UTC
Control-flow Enforcement Technology (CET) provides protection against
Return/Jump-Oriented Programming (ROP/JOP). It includes two features:
Shadow Stack(SHSTK) and Indirect Branch Tracking(IBT).
This patch series is to enable CET related CPUID report, XSAVES/XRSTORS
support and MSR access etc. for guest.

Change in v7:
- Reverted part of XSAVE feature-word naming change per review feedback.
- Fixed an issue blocking SHSTK and IBT used as two independent features
  if OS just enables either of them.
- Other minor changes during testing and review.
- Rebased to 5.2.0 base.

CET KVM patches:
https://lkml.kernel.org/r/20210203113421.5759-1-weijiang.yang@intel.com

CET kernel patches:
https://lkml.kernel.org/r/20210217222730.15819-1-yu-cheng.yu@intel.com


Yang Weijiang (6):
  target/i386: Change XSAVE related feature-word names
  target/i386: Enable XSS feature enumeration for CPUID
  target/i386: Enable CET components support for XSAVES
  target/i386: Add user-space MSR access interface for CET
  target/i386: Add CET state support for guest migration
  target/i386: Advise CET bits in CPU/MSR feature words

 target/i386/cpu.c     | 113 +++++++++++++++++++++++------
 target/i386/cpu.h     |  55 ++++++++++++++-
 target/i386/kvm.c     |  72 +++++++++++++++++++
 target/i386/machine.c | 161 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 379 insertions(+), 22 deletions(-)