From: "Arnd Bergmann" <arnd@arndb.de>
To: "Anna-Maria Gleixner" <anna-maria@linutronix.de>,
"Naresh Kamboju" <naresh.kamboju@linaro.org>,
"open list" <linux-kernel@vger.kernel.org>,
lkft-triage@lists.linaro.org,
"Linux ARM" <linux-arm-kernel@lists.infradead.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Vincenzo Frascino" <vincenzo.frascino@arm.com>
Cc: "Ard Biesheuvel" <ardb@kernel.org>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Kees Cook" <keescook@chromium.org>
Subject: Re: arch/arm64/include/asm/atomic_ll_sc.h:298:9: error: unknown type name 'u128'
Date: Mon, 26 Feb 2024 17:19:49 +0100 [thread overview]
Message-ID: <23e6b40b-deb4-4e94-b454-cb2af0543af1@app.fastmail.com> (raw)
In-Reply-To: <871q8zkygb.fsf@somnus>
On Mon, Feb 26, 2024, at 17:00, Anna-Maria Behnsen wrote:
> "Arnd Bergmann" <arnd@arndb.de> writes:
>> Commit a0d2fcd62ac2 ("vdso/ARM: Make union vdso_data_store
>> available for all architectures") introduced a reference to
>> the asm/page.h in include/vdso/datapage.h, but this is outside
>> of the vdso/*.h namespace and doesn't work in the compat vdso.
>
> But the asm namespace works for the vdso namespace. Only linux headers
> do not work, or am I wrong?
The vdso namespace was added to have something that works for
userspace code in both compat 32-bit mode and native (32 or
64) bit mode, while anything outside of include/vdso may not
work here.
> PAGE_SIZE is defined in asm/page-def.h for arm64. So this could be a
> fast fix (tested with clang-14):
>
> ---8<----
> --- a/include/vdso/datapage.h
> +++ b/include/vdso/datapage.h
> @@ -19,7 +19,11 @@
> #include <vdso/time32.h>
> #include <vdso/time64.h>
>
> +#ifdef CONFIG_ARM64
> +#include <asm/page-def.h>
> +#else
> #include <asm/page.h>
> +#endif
>
> #ifdef CONFIG_ARCH_HAS_VDSO_DATA
> #include <asm/vdso/data.h>
> ---8<---
I've sent my own patch now, which is something we probably want
anyway, but is obviously much more invasive thank your four-line
patch.
Maybe we can put your quick fix in the tip tree for the moment
and I put my patches into the asm-generic tree, then
we can do the trivial cleanup from my final patch later.
Arnd
next prev parent reply other threads:[~2024-02-26 16:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-23 9:10 arch/arm64/include/asm/atomic_ll_sc.h:298:9: error: unknown type name 'u128' Naresh Kamboju
2024-02-23 9:25 ` Arnd Bergmann
2024-02-26 15:33 ` Naresh Kamboju
2024-02-26 15:45 ` Arnd Bergmann
2024-02-26 16:00 ` Anna-Maria Behnsen
2024-02-26 16:19 ` Arnd Bergmann [this message]
2024-02-26 17:19 ` Anna-Maria Behnsen
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