Re: the x86 sysret_rip test fails on the Intel FRED architecture

Dave Hansen
2023-01-22T04:34:15Z

On 1/21/23 19:38, Li, Xin3 wrote:
>> However, it doesn't seem to make sense to do so to me. The current behavior is
>> much more of an artifact than desired behavior.
> We kind of have an agreement that %r11 = %flags after returning from the kernel.
>
> And the question is, is it what we want?

Can the selftest just set r11=rflags before the syscall? The old
syscall entry path will set r11=rflags. The FRED path won't touch it.
Either case will pass an r11==rflags check.