Messages in this thread |  | | Date | Sat, 21 Jan 2023 20:44:38 -0800 | From | "H. Peter Anvin" <> | Subject | Re: the x86 sysret_rip test fails on the Intel FRED architecture |
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On January 21, 2023 8:34:09 PM PST, Dave Hansen <dave.hansen@intel.com> wrote: >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.
That's a good idea.
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