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Some users of KVM have emulated devices (typically added to private forks of QEMU) that execute AVX instructions on PCI BARs. Whenever the guest OS tries to do that, an illegal instruction exception or emulation failure is triggered. Add the Avx flag to move instructions: - (66) 0f 10 - MOVUPS/MOVUPD from memory - (66) 0f 11 - MOVUPS/MOVUPD to memory - 66 0f 6f - MOVDQA from memory - 66 0f 7f - MOVDQA to memory - f3 0f 6f - MOVDQU from memory - f3 0f 7f - MOVDQU to memory - (66) 0f 28 - MOVAPS/MOVAPD from memory - (66) 0f 29 - MOVAPS/MOVAPD to memory - (66) 0f 2b - MOVNTPS/MOVNTPD to memory - 66 0f e7 - MOVNTDQ to memory - 66 0f 38 2a - MOVNTDQA to memory Co-developed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Keith Busch <kbusch@kernel.org> Link: https://lore.kernel.org/kvm/BD108C42-0382-4B17-B601-434A4BD038E7@fb.com/T/ Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Link: https://patch.msgid.link/20251114003633.60689-11-pbonzini@redhat.com Signed-off-by: Sean Christopherson <seanjc@google.com>