From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
"Carlos López" <clopez@suse.de>
Subject: [PATCH v2 0/6] KVM: x86: Fix emulated MOV DR{4,5} #GP bugs
Date: Wed, 3 Jun 2026 16:07:12 -0700 [thread overview]
Message-ID: <20260603230718.1733483-1-seanjc@google.com> (raw)
Carlos' fix for a bug where KVM fails to signal #GP on emulated MOV DR to
DR4 or DR5, plus follow-up fixes priority goofs (#GP vs #DB, and #GP versus
#VMEXIT on SVM). The rest are opportunistic cleanups.
v1: https://lore.kernel.org/all/20260601133320.91479-2-clopez@suse.de
Carlos López (1):
KVM: x86: Treat any non-zero return from set_dr() as a faulting
condition
Sean Christopherson (5):
KVM: x86: Prioritize DR7.GD #DB over #GP due to illegal DR6/7 value
KVM: x86: Manually check DR4/5 write values to fix SVM intercept
priority
KVM: x86: Use kvm_dr{6,7}_valid() to check DR{4,5,6,7} write values in
emulator
KVM: x86: WARN if MOV DR emulation hits a "too late" #GP
KVM: x86: Read CR4.DE in emulator if and only if accessing DR4 or DR5
arch/x86/kvm/emulate.c | 36 +++++++++++++++++++++++++++---------
1 file changed, 27 insertions(+), 9 deletions(-)
base-commit: d4bfaa66fa171089b9b9fb2dc17af9245f2b9b34
--
2.54.0.1032.g2f8565e1d1-goog
next reply other threads:[~2026-06-03 23:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-03 23:07 Sean Christopherson [this message]
2026-06-03 23:07 ` [PATCH v2 1/6] KVM: x86: Treat any non-zero return from set_dr() as a faulting condition Sean Christopherson
2026-06-03 23:07 ` [PATCH v2 2/6] KVM: x86: Prioritize DR7.GD #DB over #GP due to illegal DR6/7 value Sean Christopherson
2026-06-04 0:40 ` Maciej W. Rozycki
2026-06-09 16:21 ` Sean Christopherson
2026-06-24 4:23 ` Maciej W. Rozycki
2026-06-03 23:07 ` [PATCH v2 3/6] KVM: x86: Manually check DR4/5 write values to fix SVM intercept priority Sean Christopherson
2026-06-03 23:07 ` [PATCH v2 4/6] KVM: x86: Use kvm_dr{6,7}_valid() to check DR{4,5,6,7} write values in emulator Sean Christopherson
2026-06-03 23:07 ` [PATCH v2 5/6] KVM: x86: WARN if MOV DR emulation hits a "too late" #GP Sean Christopherson
2026-06-03 23:07 ` [PATCH v2 6/6] KVM: x86: Read CR4.DE in emulator if and only if accessing DR4 or DR5 Sean Christopherson
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