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From: Paolo Bonzini <pbonzini@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: peterx@redhat.com
Subject: [PATCH v2 0/9] KVM_SET_GUEST_DEBUG tests and fixes, DR accessors cleanups
Date: Thu,  7 May 2020 07:50:02 -0400	[thread overview]
Message-ID: <20200507115011.494562-1-pbonzini@redhat.com> (raw)

This new version of the patches improves the AMD bugfix where
KVM_EXIT_DEBUG clobbers the guest DR6 and includes stale causes.
The improved fix makes it possible to drop kvm_set_dr6 and
kvm_update_dr6 altogether.

v1->v2: - merge v1 patch 6 with get_dr6 part of v1 patch 7, cover nested SVM
	- new patch "KVM: nSVM: trap #DB and #BP to userspace if guest debugging is on"
	- rewritten patch 8 to get rid of set_dr6 completely

Paolo Bonzini (5):
  KVM: x86: fix DR6 delivery for various cases of #DB injection
  KVM: nSVM: trap #DB and #BP to userspace if guest debugging is on
  KVM: SVM: keep DR6 synchronized with vcpu->arch.dr6
  KVM: x86, SVM: isolate vcpu->arch.dr6 from vmcb->save.dr6
  KVM: VMX: pass correct DR6 for GD userspace exit

Peter Xu (4):
  KVM: X86: Declare KVM_CAP_SET_GUEST_DEBUG properly
  KVM: X86: Set RTM for DB_VECTOR too for KVM_EXIT_DEBUG
  KVM: X86: Fix single-step with KVM_SET_GUEST_DEBUG
  KVM: selftests: Add KVM_SET_GUEST_DEBUG test

 arch/powerpc/kvm/powerpc.c                    |   1 +
 arch/s390/kvm/kvm-s390.c                      |   1 +
 arch/x86/include/asm/kvm_host.h               |   3 +-
 arch/x86/kvm/svm/nested.c                     |  39 +++-
 arch/x86/kvm/svm/svm.c                        |  36 ++--
 arch/x86/kvm/vmx/vmx.c                        |  23 +-
 arch/x86/kvm/x86.c                            |  27 +--
 tools/testing/selftests/kvm/Makefile          |   1 +
 .../testing/selftests/kvm/include/kvm_util.h  |   2 +
 tools/testing/selftests/kvm/lib/kvm_util.c    |   9 +
 .../testing/selftests/kvm/x86_64/debug_regs.c | 202 ++++++++++++++++++
 11 files changed, 281 insertions(+), 63 deletions(-)
 create mode 100644 tools/testing/selftests/kvm/x86_64/debug_regs.c

-- 
2.18.2


             reply	other threads:[~2020-05-07 11:51 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-07 11:50 Paolo Bonzini [this message]
2020-05-07 11:50 ` [PATCH v2 1/9] KVM: X86: Declare KVM_CAP_SET_GUEST_DEBUG properly Paolo Bonzini
2020-05-07 11:50 ` [PATCH v2 2/9] KVM: x86: fix DR6 delivery for various cases of #DB injection Paolo Bonzini
2020-05-07 11:50 ` [PATCH v2 3/9] KVM: X86: Set RTM for DB_VECTOR too for KVM_EXIT_DEBUG Paolo Bonzini
2020-05-07 11:50 ` [PATCH v2 4/9] KVM: X86: Fix single-step with KVM_SET_GUEST_DEBUG Paolo Bonzini
2020-05-07 11:50 ` [PATCH v2 5/9] KVM: selftests: Add KVM_SET_GUEST_DEBUG test Paolo Bonzini
2020-05-07 11:50 ` [PATCH v2 6/9] KVM: nSVM: trap #DB and #BP to userspace if guest debugging is on Paolo Bonzini
2020-05-07 18:22   ` Peter Xu
2020-05-07 11:50 ` [PATCH v2 7/9] KVM: SVM: keep DR6 synchronized with vcpu->arch.dr6 Paolo Bonzini
2020-05-07 18:22   ` Peter Xu
2020-05-07 22:21     ` Paolo Bonzini
2020-05-07 11:50 ` [PATCH v2 8/9] KVM: x86, SVM: isolate vcpu->arch.dr6 from vmcb->save.dr6 Paolo Bonzini
2020-05-07 19:28   ` Peter Xu
2020-05-07 22:33     ` Paolo Bonzini
2020-05-08 15:32       ` Peter Xu
2020-05-09 13:28         ` Paolo Bonzini
2020-05-11 16:15           ` Peter Xu
2020-05-07 11:50 ` [PATCH 9/9] KVM: VMX: pass correct DR6 for GD userspace exit Paolo Bonzini
2020-05-07 16:18   ` Peter Xu
2020-05-07 16:21     ` Paolo Bonzini
2020-05-07 16:38       ` Peter Xu
2020-05-07 17:42         ` Paolo Bonzini
2020-05-07 18:05           ` Peter Xu

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