MMX state is saved/restored by FSAVE/FRSTOR so the instructions are
not illegal opcodes even if CR4.OSFXSR=0. Make sure that validate_vex
takes into account the prefix and only checks HF_OSFXSR_MASK in the
presence of an SSE instruction.
Fixes: 20581aadec5e ("target/i386: validate VEX prefixes via the instructions'
exception classes", 2022-10-18)
Resolves:https://gitlab.com/qemu-project/qemu/-/issues/1350
Reported-by: Helge Konetzka (@hejko on gitlab.com)
Signed-off-by: Paolo Bonzini<pbonzini@redhat.com>
---
target/i386/tcg/decode-new.c.inc | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)