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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,
	 Adrian Hunter <adrian.hunter@intel.com>
Subject: [PATCH 0/2] KVM: VMX: Mark Intel PT virtualization as BROKEN
Date: Fri,  1 Nov 2024 11:50:29 -0700	[thread overview]
Message-ID: <20241101185031.1799556-1-seanjc@google.com> (raw)

Hide Intel PT virtualization behind BROKEN, as it has multiple fatal
flaws, several which put the host at risk, and several of which are far
too invasive to backport to stable trees.

I included one of the easier fixes from Adrian to help show just how
broken PT virtualization is, e.g. to illustrate the apparent lack of usage.

Adrian Hunter (1):
  KVM: VMX: Allow toggling bits in MSR_IA32_RTIT_CTL when enable bit is
    cleared

Sean Christopherson (1):
  KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind
    CONFIG_BROKEN

 arch/x86/kvm/vmx/vmx.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)


base-commit: e466901b947d529f7b091a3b00b19d2bdee206ee
-- 
2.47.0.163.g1226f6d8fa-goog


             reply	other threads:[~2024-11-01 18:50 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-11-01 18:50 Sean Christopherson [this message]
2024-11-01 18:50 ` [PATCH 1/2] KVM: VMX: Bury Intel PT virtualization (guest/host mode) behind CONFIG_BROKEN Sean Christopherson
2024-11-04  1:56   ` Xiaoyao Li
2024-11-04 22:46     ` Sean Christopherson
2024-11-05 13:34       ` Xiaoyao Li
2024-11-04  8:23   ` Adrian Hunter
2024-11-04 23:52     ` Sean Christopherson
2024-11-08  9:07   ` Paolo Bonzini
2024-11-01 18:50 ` [PATCH 2/2] KVM: VMX: Allow toggling bits in MSR_IA32_RTIT_CTL when enable bit is cleared Sean Christopherson
2024-11-04  1:57   ` Xiaoyao Li
2024-12-19  2:41 ` [PATCH 0/2] KVM: VMX: Mark Intel PT virtualization as BROKEN Sean Christopherson

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