[PATCH 0/2] x86/kvm: Enable MCE injection in the guest v2

[Borislav Petkov]

From: Borislav Petkov <bp@xxxxxxx>

Hi all,

here's v2, dropping patch 3 and incorporating hopefully all of Radim's
feedback.

Thx.

v1 cover letter:

there's this mce-inject.ko module in the kernel which allows for
injecting real MCEs and thus test the MCE handling code.

It is doubly useful to be able to inject same MCEs in a guest so that
testing of the MCE handling code can happen even easier/faster. In order
to be able to do that on an AMD guest, we need to emulate some bits
and pieces like the HWCR[McStatusWrEn] bit which allows writes to the
MCi_STATUS registers without a #GP.

The below does that and with it I'm able to properly inject MCEs in said
guest.

Borislav Petkov (2):
  kvm/x86: Move MSR_K7_HWCR to svm.c
  x86/kvm: Implement MSR_HWCR support

 arch/x86/kvm/svm.c | 20 ++++++++++++++++++++
 arch/x86/kvm/x86.c | 46 +++++++++++++++++++++++++++++++---------------
 2 files changed, 51 insertions(+), 15 deletions(-)

-- 
2.17.0.582.gccdcbd54c