linux-kernel - [PATCH 0/3] Infinite loops in microcode while running guests

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Date:	Tue, 10 Nov 2015 13:22:51 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:	digitaleric@...gle.com
Subject: [PATCH 0/3] Infinite loops in microcode while running guests

Yes, these can happen.  The issue is that benign exceptions are
delivered serially, but two of them (#DB and #AC) can also happen
during exception delivery itself.  The subsequent infinite stream
of exceptions causes the processor to never exit guest mode.

Paolo

Eric Northup (1):
  KVM: x86: work around infinite loop in microcode when #AC is delivered

Paolo Bonzini (2):
  KVM: svm: unconditionally intercept #DB
  KVM: x86: rename update_db_bp_intercept to update_bp_intercept

 arch/x86/include/asm/kvm_host.h |  2 +-
 arch/x86/include/uapi/asm/svm.h |  1 +
 arch/x86/kvm/svm.c              | 22 +++++++++++-----------
 arch/x86/kvm/vmx.c              |  7 +++++--
 arch/x86/kvm/x86.c              |  2 +-
 5 files changed, 19 insertions(+), 15 deletions(-)

-- 
1.8.3.1

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