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SYSCALL emulation currently clears in 64-bit mode eflags according to
MSR_SYSCALL_MASK. However, on bare-metal eflags[1] which is fixed to one
cannot be cleared, even if MSR_SYSCALL_MASK masks the bit. This wrong behavior
may result in failed VM-entry, as VT disallows entry with eflags[1] cleared.
This patch sets the bit after masking eflags on syscall.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
807c142595