lkml.org 
[lkml]   [2018]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] x86/kvm: Enable MCE injection in the guest v2
Date
From: Borislav Petkov <bp@suse.de>

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

\
 
 \ /
  Last update: 2018-06-28 19:39    [W:0.049 / U:0.228 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site