Re: [PATCH] target/arm: Enable SCTLR_EL1.BT0 for aarch64-linux-user

[Richard Henderson]

On 4/28/22 05:56, Peter Maydell wrote:
> On Wed, 27 Apr 2022 at 05:23, Richard Henderson
> <richard.henderson@linaro.org> wrote:
> > This controls whether the PACI{A,B}SP instructions trap with BTYPE=3
> > (indirect branch from register other than x16/x17).  The linux kernel
> > sets this in bti_enable().
> >
> > Resolves: https://gitlab.com/qemu-project/qemu/-/issues/998
> > Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
>
> > --- a/tests/tcg/aarch64/Makefile.target
> > +++ b/tests/tcg/aarch64/Makefile.target
> > @@ -26,11 +26,11 @@ run-plugin-pauth-%: QEMU_OPTS += -cpu max
> >   endif
> >
> >   # BTI Tests
> > -# bti-1 tests the elf notes, so we require special compiler support.
> > +# bti-1 test the elf notes, so we require special compiler support.
>
> Did you intend to edit this comment line ?
>
> Otherwise
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Oops, no.  At one point I had bti-3 sharing this line, and following code, but 
it didn't work.

r~