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Microarchitectural Data Sampling is a hardware vulnerability which allows unprivileged speculative access to data which is available in various CPU internal buffers. Some Intel processors use the ARCH_CAP_MDS_NO bit in the IA32_ARCH_CAPABILITIES MSR to report that they are not vulnerable, make it available to guests. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20190516185320.28340-1-pbonzini@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>