Re: [PATCH 09/11] tests/tcg: disable pauth for aarch64 gdb tests

[Peter Maydell]

On Mon, 13 Mar 2023 at 19:21, Richard Henderson
<richard.henderson@linaro.org> wrote:
>
> On 3/13/23 04:44, Luis Machado wrote:
> >> Luis: I think that rather than doing (2) with a QEMU namespace,
> >> we should define a gdb namespace for this. That makes it clear
> >> that this is still a gdb-upstream-sanctioned way of exposing
> >> the pauth registers.
> >
> > That should be fine as well, and would work to side-step the gdb 12 bug so 
> > it doesn't crash.
> >
> > We could name the feature "org.gnu.gdb.aarch64.pauth_v2" or somesuch, and 
> > slowly stop
> > using the original
> > "org.gnu.gdb.aarch64.pauth" feature. I can document the requirements for a 
> > compliant
> > pauth_v2.
>
> What if we leave the original two registers, pauth_[cd]mask, in 
> org.gnu.gdb.aarch64.pauth
> and move the new *_high registers into a different feature?  That would 
> maximize the set
> of gdb version for which the original user-only support is functional.

If that avoids the gdb crash, sure. But I had the impression from
Luis' description of it that that would not help (i.e. that it was
the not-used-by-gdb registers in other XML sections like sysregs
that resulted in it getting confused about the register number
for its internal pauth-related register).

thanks
-- PMM