linux-kernel - Re: [PATCH v5 0/5] support FEAT_LSUI and apply it on futex atomic ops

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Message-ID: <86ikjk8efp.wl-maz@kernel.org>
Date: Tue, 22 Jul 2025 15:53:30 +0100
From: Marc Zyngier <maz@...nel.org>
To: Yeoreum Yun <yeoreum.yun@....com>
Cc: catalin.marinas@....com,
	will@...nel.org,
	broonie@...nel.org,
	oliver.upton@...ux.dev,
	shameerali.kolothum.thodi@...wei.com,
	joey.gouly@....com,
	james.morse@....com,
	ardb@...nel.org,
	scott@...amperecomputing.com,
	suzuki.poulose@....com,
	yuzenghui@...wei.com,
	mark.rutland@....com,
	linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 0/5] support FEAT_LSUI and apply it on futex atomic ops

Hi Yeoreum,

On Tue, 22 Jul 2025 13:19:51 +0100,
Yeoreum Yun <yeoreum.yun@....com> wrote:
> 
> Since Armv9.6, FEAT_LSUI supplies the load/store instructions for
> previleged level to access to access user memory without clearing
> PSTATE.PAN bit.
> 
> This patchset support FEAT_LSUI and applies in futex atomic operation
> where can replace from ldxr/stlxr pair implmentation with clearing
> PSTATE.PAN bit to correspondant load/store unprevileged atomic operation
> without clearing PSTATE.PAN bit.

[...]

Please give people a chance to review your series without having to
jump to the new one within 48 hours. If anything, it actively prevents
people from reviewing it (why would I review it, since the author is
going to post a new version in a couple of days...).

Also, given that we're >this< close to the next merge window, I don't
think this series is likely to be a candidate for 6.17. Give yourself
the space to polish the series and look at it with a critical eye,
there is plenty of time for 6.18.

Thanks,

	M.

-- 
Without deviation from the norm, progress is not possible.