linux-kernel - Re: (subset) [PATCH 0/3] arm64: uapi: Provide correct __BITS_PER

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Message-ID: <175689848208.2711243.6145487727322080491.b4-ty@arm.com>
Date: Wed,  3 Sep 2025 12:21:22 +0100
From: Catalin Marinas <catalin.marinas@....com>
To: Will Deacon <will@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnd Bergmann <arnd@...db.de>,
	Andy Lutomirski <luto@...nel.org>,
	Vincenzo Frascino <vincenzo.frascino@....com>,
	Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Cc: John Stultz <jstultz@...gle.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: (subset) [PATCH 0/3] arm64: uapi: Provide correct __BITS_PER_LONG for the compat vDSO

On Thu, 21 Aug 2025 09:56:43 +0200, Thomas Weißschuh wrote:
> The generic vDSO library uses the UAPI headers. On arm64 __BITS_PER_LONG is
> always '64' even when used from the compat vDSO. In that case __GENMASK()
> does an illegal bitshift, invoking undefined behaviour.
> 
> The first patch should go into the 6.17 tree.
> 
> 
> [...]

Applied to arm64 (for-next/fixes), thanks! And sorry for the delay,
missed it due to holidays.

[1/3] arm64: uapi: Provide correct __BITS_PER_LONG for the compat vDSO
      https://git.kernel.org/arm64/c/9a6d3ff10f7f

I'll leave the other two patches to Will for the upcoming merging
window.

-- 
Catalin