On 10/06/2025 22.26, Segher Boessenkool wrote:
On Tue, Jun 10, 2025 at 06:01:28PM +0200, Thomas Huth wrote:
From: Thomas Huth <th...@redhat.com>
While the GCC and Clang compilers already define __ASSEMBLER__
automatically when compiling assembly code, __ASSEMBLY__ is a
macro that only gets defined by the Makefiles in the kernel.
And it should not, the kernel is not allowed to define any symbol
starting with two underscores at all! Including __ASSEMBLER__ yes.
Right, I can add that in the next version, too.
This can be very confusing when switching between userspace
and kernelspace coding, or when dealing with uapi headers that
rather should use __ASSEMBLER__ instead. So let's standardize on
the __ASSEMBLER__ macro that is provided by the compilers now.
"Now"? This is true since at least 2003, and probably a lot longer
already.
Sorry, I've put the "now" into the wrong location ... it should rather be in
the first half of the sentence instead :-)
Thomas
