[PATCH v2 5/6] treewide: Add a function to change page permissions

[Ilias Apalodimas]

Hi Richard,

On Thu, 20 Feb 2025 at 20:32, Richard Henderson
<richard.henderson at linaro.org> wrote:
>
> On 2/20/25 05:54, Ilias Apalodimas wrote:
> > +++ b/include/cpu_func.h
> > @@ -69,6 +69,23 @@ void flush_dcache_range(unsigned long start, unsigned long stop);
> >   void invalidate_dcache_range(unsigned long start, unsigned long stop);
> >   void invalidate_dcache_all(void);
> >   void invalidate_icache_all(void);
> > +
> > +enum pgprot_attrs {
> > +     MMU_ATTR_RO,
> > +     MMU_ATTR_RX,
> > +     MMU_ATTR_RW,
> > +};
> > +
> > +/** pgprot_set_attrs() - Set page table permissions
> > + *
> > + * @addr: Physical address start
> > + * @size: size of memory to change
> > + * @perm: New permissions
> > + *
> > + * Return: 0 on success, error otherwise.
> > + **/
> > +int pgprot_set_attrs(phys_addr_t addr, size_t size, u64 perm);
>
> Why do you not use the enum for 'perm'?
> That's certainly the API you're expecting...

Ah good catch. On the original RFC I didn't have the enum. Instead I
had raw values of 1,2,3.
I switched it to a proper enum for v1, but missed the function argument.

Thanks
/Ilias

>
>
> r~