3/28/2024 0 Comments Qemu networkingIf all your hosts have these features, compatibility is retained: If you wish to retain compatibility, you can expose selected features to your guest. To pass all available host processor features to the guest, use the command line switch This is great for compatibility but comes at a performance cost. QEMU and KVM default to a compatible subset of cpu features, so that if you change your host processor, or perform a live migration, the guest will see its cpu features unchanged. These features vary from processor to processor. Modern processors come with a wide variety of performance enhancing features such as streaming instructions sets (sse) and other performance-enhancing instructions.
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