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KVM: svm: unconditionally intercept #DB
This is needed to avoid the possibility that the guest triggers an infinite stream of #DB exceptions (CVE-2015-8104). VMX is not affected: because it does not save DR6 in the VMCS, it already intercepts #DB unconditionally. Reported-by: Jan Beulich <firstname.lastname@example.org> Cc: email@example.com Signed-off-by: Paolo Bonzini <firstname.lastname@example.org>
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