Re: [RFC PATCH v3 0/2] selftests/x86: sysret_rip update for FRED system

Ammar Faizi
2023-01-25T03:27:33Z

On Tue, Jan 24, 2023 at 01:37:43PM -0800, H. Peter Anvin wrote:
> On January 24, 2023 1:32:14 PM PST, "Li, Xin3" <xin3.li@intel.com> wrote:
> >> From: Ammar Faizi <ammarfaizi2@gnuweeb.org>
> >>
> >> This is an RFC patchset v3:
> >> sysret_rip test update for Intel FRED architecture.
> >>
> >> Xin Li reported sysret_rip test fails at:
> >>
> >> assert(ctx->uc_mcontext.gregs[REG_EFL] ==
> >> ctx->uc_mcontext.gregs[REG_R11]);
> >
> >On FRED systems, flags is 0x200a93 and r11 is 0xfeedfacedeadbeef here.
> >
> >We need to remove or change this assertion, maybe:
> > assert(ctx->uc_mcontext.gregs[REG_EFL] == ctx->uc_mcontext.gregs[REG_R11] ||
> > r11_sentinel == ctx->uc_mcontext.gregs[REG_R11]);
> >
>
> This should use check_regs_result() – which is exactly the reason I made that a separate function.

Fixed in v4.

--
Ammar Faizi