From: Nadav Amit <namit@cs.technion.ac.il>
To: pbonzini@redhat.com, joro@8bytes.org
Cc: kvm@vger.kernel.org, Nadav Amit <namit@cs.technion.ac.il>
Subject: [PATCH 0/5] KVM: x86: Various bug fixes
Date: Fri, 3 Oct 2014 01:10:01 +0300 [thread overview]
Message-ID: <1412287806-16016-1-git-send-email-namit@cs.technion.ac.il> (raw)
This patch-set includes various bug fixes.
The most notable bug is the wrong decoding of guest instructions which cross
page boundary. I am surprised it does not happen in real-systems.
Please review carefully the changes the DR4/5 bug-fix introduces to SVM part.
Since I do not have AMD machine I could not check the patch. Anyhow, I suspect
SVM dr-interception is buggy since in certain cases instructions are skipped
while fault is injected.
Thanks for reviewing the patches.
Nadav Amit (5):
KVM: x86: Clear DR7.LE during task-switch
KVM: x86: Emulator performs code segment checks on read access
KVM: x86: Decoding guest instructions which cross page boundary may
fail
KVM: vmx: Unavailable DR4/5 is checked before CPL
KVM: x86: Using TSC deadline may cause multiple interrupts by user
writes
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/emulate.c | 10 +++++----
arch/x86/kvm/lapic.c | 7 +++++-
arch/x86/kvm/lapic.h | 3 ++-
arch/x86/kvm/svm.c | 10 +++++----
arch/x86/kvm/vmx.c | 19 ++++++++++------
arch/x86/kvm/x86.c | 48 ++++++++++++++++-------------------------
7 files changed, 51 insertions(+), 47 deletions(-)
--
1.9.1
next reply other threads:[~2014-10-02 22:10 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-02 22:10 Nadav Amit [this message]
2014-10-02 22:10 ` [PATCH 1/5] KVM: x86: Clear DR7.LE during task-switch Nadav Amit
2014-10-06 19:45 ` Radim Krčmář
2014-10-02 22:10 ` [PATCH 2/5] KVM: x86: Emulator performs code segment checks on read access Nadav Amit
2014-10-06 20:32 ` Radim Krčmář
2014-10-10 2:07 ` [PATCH v2 " Nadav Amit
2014-10-10 15:54 ` Radim Krčmář
2014-10-11 9:39 ` Paolo Bonzini
2014-10-12 6:57 ` Nadav Amit
2014-10-12 12:12 ` Paolo Bonzini
2014-10-12 23:15 ` Nadav Amit
2014-10-13 4:29 ` Paolo Bonzini
2014-10-13 11:31 ` Gleb Natapov
2014-10-19 16:07 ` Nadav Amit
2014-10-02 22:10 ` [PATCH 3/5] KVM: x86: Decoding guest instructions which cross page boundary may fail Nadav Amit
2014-10-06 20:50 ` Radim Krčmář
2014-10-07 9:15 ` Nadav Amit
2014-10-08 9:02 ` Paolo Bonzini
2014-10-02 22:10 ` [PATCH 4/5] KVM: vmx: Unavailable DR4/5 is checked before CPL Nadav Amit
2014-10-06 19:33 ` Radim Krčmář
2014-10-02 22:10 ` [PATCH 5/5] KVM: x86: Using TSC deadline may cause multiple interrupts by user writes Nadav Amit
2014-10-06 20:57 ` Radim Krčmář
2014-10-07 9:35 ` Nadav Amit
2014-10-08 10:06 ` Radim Krčmář
2014-10-08 10:07 ` Paolo Bonzini
2014-10-10 1:55 ` Nadav Amit
2014-10-10 9:45 ` Paolo Bonzini
2014-10-10 12:50 ` Radim Krčmář
2014-10-10 12:51 ` Nadav Amit
2014-10-10 13:55 ` Paolo Bonzini
2014-10-10 14:02 ` Paolo Bonzini
2014-10-08 9:29 ` Paolo Bonzini
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