> -----Original Message----- > From: Borislav Petkov <bp@xxxxxxxxx> > Sent: Thursday, June 28, 2018 1:38 PM > To: KVM <kvm@xxxxxxxxxxxxxxx> > Cc: Joerg Roedel <joro@xxxxxxxxxx>; Radim Krčmář <rkrcmar@xxxxxxxxxx>; > Lendacky, Thomas <Thomas.Lendacky@xxxxxxx>; Tony Luck > <tony.luck@xxxxxxxxx>; Ghannam, Yazen <Yazen.Ghannam@xxxxxxx>; LKML > <linux-kernel@xxxxxxxxxxxxxxx> > Subject: [PATCH 0/2] x86/kvm: Enable MCE injection in the guest v2 > > 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(-) > Tested-by: Yazen Ghannam <yazen.ghannam@xxxxxxx> Thanks! -Yazen
