Re: [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to kconfig and reduce ifdefery

Yury Norov <[email protected]> Mon, 27 Apr 2026 16:47:53 -0400

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<ae_LeSk7XDEseaZb@yury>

On Mon, Apr 27, 2026 at 09:39:33PM +0100, Andrew Cooper wrote:
> On 27/04/2026 7:39 pm, Yury Norov wrote:
> > On Mon, Apr 27, 2026 at 07:13:43PM +0200, Christophe Leroy (CS GROUP) wrote:
> >> Among the 21 architectures supported by the kernel, 16 define both
> >> INLINE_COPY_TO_USER and INLINE_COPY_FROM_USER while the 5 other ones
> >> don't define any of the two.
> >>
> >> To simplify and reduce risk of mistakes, convert them to a single
> >> kconfig item named CONFIG_ARCH_WANTS_NOINLINE_COPY which will be
> > We've got a special word for it: outline. Can you name it
> > CONFIG_OUTLINE_USERCOPY, or similar?
> 
> You can't swap the "in" for "out" like this.  "out of line" is the
> opposite of "inline" in this context, while "outline" means something
> different and unrelated.

Check KASAN_OUTLINE vs KASAN_INLINE for example