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

From: Alexey Kardashevskiy
Date: Wed Nov 30 2022 - 21:21:07 EST


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(-)

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2.38.1