[kernel,0/3] KVM: SEV: Enable AMD SEV-ES DebugSwap

Message

Alexey Kardashevskiy Dec. 1, 2022, 2:19 a.m. UTC

This is to use another AMD SEV-ES hardware assisted register swap,
more detail in 2/3. The patches are fairly independend but required in
this order.

This is based on sha1 ef4d3ea40565 and requires something like this:
https://lkml.org/lkml/2022/11/29/1229

This patchset is pushed out at
https://github.com/aik/linux/commits/debugswap

Please comment. Thanks.



Alexey Kardashevskiy (3):
  x86/amd/dr_addr_mask: Cache values in percpu variables
  KVM: SEV: Enable DebugSwap
  x86/sev: Do not handle #VC for DR7 read/write

 arch/x86/include/asm/debugreg.h |  1 +
 arch/x86/include/asm/svm.h      |  1 +
 arch/x86/kvm/svm/svm.h          | 18 ++++++++---
 arch/x86/kernel/cpu/amd.c       | 32 ++++++++++++++++++++
 arch/x86/kernel/sev.c           |  6 ++++
 arch/x86/kvm/svm/sev.c          | 22 +++++++++++++-
 arch/x86/kvm/svm/svm.c          |  6 ++--
 7 files changed, 78 insertions(+), 8 deletions(-)