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Re: [PATCH] xen/arm: Replace __ASSEMBLY__ with __ASSEMBLER__ in interface.h
- To: Stefano Stabellini <sstabellini@xxxxxxxxxx>
- From: Thomas Huth <thuth@xxxxxxxxxx>
- Date: Wed, 22 Apr 2026 06:57:18 +0200
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- Cc: Juergen Gross <jgross@xxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- Delivery-date: Wed, 22 Apr 2026 04:57:44 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 22/04/2026 00.15, Stefano Stabellini wrote:
On Tue, 21 Apr 2026, Thomas Huth wrote:
From: Thomas Huth <thuth@xxxxxxxxxx>
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.
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 now
on the __ASSEMBLER__ macro that is provided by the compilers.
Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx>
I haven't been closely following the __ASSEMBLER__ vs __ASSEMBLY__
discussion. If there is general agreement to use __ASSEMBLER__ in
headers, I am happy to go along with that. Currently, I see more than
140 uses of __ASSEMBLY__ compared to fewer than 20 uses of
__ASSEMBLER__, but I'll defer to your judgment if the project is moving
in that direction.
I assume you only counted the occurrences in the main include/ folder?
Please also take the arch/*/include/ folders into account:
thuth:~/devel/linux$ grep -r __ASSEMBLER__ arch/*/include/ | wc -l
1492
thuth:~/devel/linux$ grep -r __ASSEMBLY__ arch/*/include/ | wc -l
120
So most spots have been converted already. It would be great if you could
help with the xen header!
Thanks,
Thomas
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