[PATCH v1 RFC Zisslpcfi 15/20] sslp prctl: arch-agnostic prctl for shadow stack and landing pad instr

Mark Brown broonie at kernel.org
Tue Oct 10 09:17:16 PDT 2023


On Mon, Oct 09, 2023 at 02:22:51PM -0700, Deepak Gupta wrote:
> On Wed, Jun 7, 2023 at 1:22 PM Mark Brown <broonie at kernel.org> wrote:

> > On Sun, Feb 12, 2023 at 08:53:44PM -0800, Deepak Gupta wrote:

> > > +int __weak arch_get_shadow_stack_status(struct task_struct *t, unsigned long __user *status)
> > > +{
> > > +     return -EINVAL;
> > > +}

> > Having looked at this further is there any great reason why the status
> > is passed as a pointer?  It seems needless effort.

> I was trying to be cleaner here to not overload returned status with a pointer.
> You could say that any negative value is an error. I don't have any
> favorites here.

OK, thanks - I changed it to treat negative codes as errors, I'll leave
things like that.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 488 bytes
Desc: not available
URL: <http://lists.infradead.org/pipermail/linux-riscv/attachments/20231010/9ee07b7a/attachment.sig>


More information about the linux-riscv mailing list