Re: [PATCH] mseal sysmap: add arch-support txt

[Geert Uytterhoeven]

Hi Jeff,

On Tue, 18 Mar 2025 at 19:39, Jeff Xu <jeffxu@xxxxxxxxxxxx> wrote:
> On Tue, Mar 18, 2025 at 10:21 AM Jeff Xu <jeffxu@xxxxxxxxxxxx> wrote:
> > On Mon, Mar 17, 2025 at 12:14 PM Geert Uytterhoeven
> > <geert@xxxxxxxxxxxxxx> wrote:
> > > On Mon, 17 Mar 2025 at 20:02, Jeff Xu <jeffxu@xxxxxxxxxxxx> wrote:
> > > > On Mon, Mar 17, 2025 at 11:14 AM Jeff Xu <jeffxu@xxxxxxxxxxxx> wrote:
> > > > > On Fri, Mar 14, 2025 at 3:41 AM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:
> > > > > > On Thu, 13 Mar 2025 at 23:26, Jeff Xu <jeffxu@xxxxxxxxxxxx> wrote:
> > > > > > > On Wed, Mar 12, 2025 at 10:21 PM Lorenzo Stoakes
> > > > > > > <lorenzo.stoakes@xxxxxxxxxx> wrote:
> > > > > > > > On Thu, Mar 13, 2025 at 12:06:23AM +0000, jeffxu@xxxxxxxxxxxx wrote:
> > > > > > > > > From: Jeff Xu <jeffxu@xxxxxxxxxxxx>
> > > > > > > > > Add Documentation/features/core/mseal_sys_mappings/arch-support.txt
> > > > > > > > >
> > > > > > > > > Signed-off-by: Jeff Xu <jeffxu@xxxxxxxxxxxx>
> > > > > >
> > > > > > Thanks for your patch!
> > > >
> > > > I used "find * |xargs grep -i  CONFIG_64BIT" to look for CONFIG_64BIT
> > > > under arch/, and together with internet search/wiki page, and below is
> > > > the proposed update.
> > >
> > > That way you only find users of the symbol, not where it is defined.
> > >
> > > You can use
> > >
> > >     git grep -W "config\s*64BIT" -- arch/
> > >
> > > to find out which architectures are 32-bit, 64-bit, or support both.
> > >
> Microblaze, openrisc, sh, hexagon all don't have CONFIG 64BIT defined
> in KCONFIG, and are not using CONFIG_64BIT in their arch code.  Is
> there something else that makes you point out the hexagon as 32 bit
> only (and not other 3) ?

AFAIK Microblaze, openrisc, and hexagon are all 32-bit.
Linux used to support sh64, but that was dropped, as sh64 never went
beyond prototype hardware.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds