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From: David Edmondson <david.edmondson@oracle.com>
To: linux-kernel@vger.kernel.org
Cc: kvm@vger.kernel.org, Thomas Gleixner <tglx@linutronix.de>,
	Borislav Petkov <bp@alien8.de>,
	Vitaly Kuznetsov <vkuznets@redhat.com>,
	Joerg Roedel <joro@8bytes.org>, Ingo Molnar <mingo@redhat.com>,
	Sean Christopherson <seanjc@google.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>,
	"H. Peter Anvin" <hpa@zytor.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	x86@kernel.org, David Edmondson <david.edmondson@oracle.com>
Subject: [PATCH 0/2] KVM: x86: Convey the exit reason to user-space on emulation failure
Date: Mon, 28 Jun 2021 18:31:50 +0100	[thread overview]
Message-ID: <20210628173152.2062988-1-david.edmondson@oracle.com> (raw)

To aid in debugging failures in the field, when instruction emulation
fails, report the VM exit reason to userspace in order that it can be
recorded.

The changes are on top of Aaron's patches from
https://lore.kernel.org/r/20210510144834.658457-1-aaronlewis@google.com
which are in the KVM queue, but not yet upstream.

David Edmondson (2):
  KVM: x86: Add kvm_x86_ops.get_exit_reason
  KVM: x86: On emulation failure, convey the exit reason to userspace

 arch/x86/include/asm/kvm-x86-ops.h |  1 +
 arch/x86/include/asm/kvm_host.h    |  1 +
 arch/x86/kvm/svm/svm.c             |  6 ++++++
 arch/x86/kvm/vmx/vmx.c             |  6 ++++++
 arch/x86/kvm/x86.c                 | 23 +++++++++++++++++------
 include/uapi/linux/kvm.h           |  2 ++
 6 files changed, 33 insertions(+), 6 deletions(-)

-- 
2.30.2


             reply	other threads:[~2021-06-28 17:41 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-28 17:31 David Edmondson [this message]
2021-06-28 17:31 ` [PATCH 1/2] KVM: x86: Add kvm_x86_ops.get_exit_reason David Edmondson
2021-06-30 16:36   ` David Matlack
2021-06-28 17:31 ` [PATCH 2/2] KVM: x86: On emulation failure, convey the exit reason to userspace David Edmondson
2021-06-30 16:48   ` David Matlack
2021-07-02  8:44     ` David Edmondson
2021-07-09 21:58       ` Sean Christopherson
2021-07-29 13:48         ` David Edmondson
2021-06-30 16:33 ` [PATCH 0/2] KVM: x86: Convey the exit reason to user-space on emulation failure David Matlack
2021-06-30 17:08   ` David Matlack

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