From: Catalin Marinas <catalin.marinas@arm.com>
To: Yeoreum Yun <yeoreum.yun@arm.com>
Cc: will@kernel.org, broonie@kernel.org, maz@kernel.org,
oliver.upton@linux.dev, joey.gouly@arm.com, james.morse@arm.com,
ardb@kernel.org, scott@os.amperecomputing.com,
suzuki.poulose@arm.com, yuzenghui@huawei.com,
mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org,
kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org
Subject: Re: [PATCH RESEND v7 1/6] arm64: cpufeature: add FEAT_LSUI
Date: Fri, 12 Sep 2025 17:12:56 +0100 [thread overview]
Message-ID: <aMRGiF9Ez18tc4u9@arm.com> (raw)
In-Reply-To: <20250816151929.197589-2-yeoreum.yun@arm.com>
On Sat, Aug 16, 2025 at 04:19:24PM +0100, Yeoreum Yun wrote:
> Since Armv9.6, FEAT_LSUI supplies load/store instructions
> for privileged level to access user memory without clearing PSTATE.PAN bit.
>
> Add LSUI feature so that the unprevilieged load/store instructions
> could be used when kernel accesses user memory without clearing PSTATE.PAN bit.
These two paragraphs are pretty much saying the same thing. Just replace
the second with something like "Add CPU feature detection for
FEAT_LSUI". No need to explain the PSTATE.PAN again.
> Signed-off-by: Yeoreum Yun <yeoreum.yun@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
next prev parent reply other threads:[~2025-09-12 16:13 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-16 15:19 [PATCH RESEND v7 0/6] support FEAT_LSUI and apply it on futex atomic ops Yeoreum Yun
2025-08-16 15:19 ` [PATCH RESEND v7 1/6] arm64: cpufeature: add FEAT_LSUI Yeoreum Yun
2025-09-12 16:12 ` Catalin Marinas [this message]
2025-08-16 15:19 ` [PATCH RESEND v7 2/6] KVM: arm64: expose FEAT_LSUI to guest Yeoreum Yun
2025-09-12 16:25 ` Catalin Marinas
2025-08-16 15:19 ` [PATCH RESEND v7 3/6] arm64: Kconfig: add LSUI Kconfig Yeoreum Yun
2025-09-12 16:24 ` Catalin Marinas
2025-09-15 10:42 ` Yeoreum Yun
2025-09-15 11:32 ` Will Deacon
2025-09-15 11:41 ` Yeoreum Yun
2025-08-16 15:19 ` [PATCH RESEND v7 4/6] arm64: futex: refactor futex atomic operation Yeoreum Yun
2025-09-11 15:38 ` Will Deacon
2025-09-11 16:04 ` Yeoreum Yun
2025-09-12 16:44 ` Catalin Marinas
2025-09-12 17:01 ` Catalin Marinas
2025-09-15 10:39 ` Yeoreum Yun
2025-09-12 16:53 ` Catalin Marinas
2025-09-15 10:32 ` Yeoreum Yun
2025-09-15 19:40 ` Catalin Marinas
2025-09-15 20:35 ` Will Deacon
2025-09-16 7:02 ` Catalin Marinas
2025-09-16 9:15 ` Yeoreum Yun
2025-09-16 9:24 ` Yeoreum Yun
2025-09-16 10:02 ` Yeoreum Yun
2025-09-16 10:16 ` Will Deacon
2025-09-16 12:50 ` Yeoreum Yun
2025-09-17 9:32 ` Yeoreum Yun
2025-09-16 12:47 ` Mark Rutland
2025-09-16 13:27 ` Yeoreum Yun
2025-09-16 13:45 ` Mark Rutland
2025-09-16 13:58 ` Yeoreum Yun
2025-09-16 14:07 ` Mark Rutland
2025-09-16 14:15 ` Yeoreum Yun
2025-09-15 22:34 ` Yeoreum Yun
2025-09-16 12:53 ` Catalin Marinas
2025-08-16 15:19 ` [PATCH v7 RESEND 5/6] arm64: futex: small optimisation for __llsc_futex_atomic_set() Yeoreum Yun
2025-09-11 15:28 ` Will Deacon
2025-09-11 16:19 ` Yeoreum Yun
2025-09-12 16:36 ` Catalin Marinas
2025-09-15 10:41 ` Yeoreum Yun
2025-08-16 15:19 ` [PATCH RESEND v7 6/6] arm64: futex: support futex with FEAT_LSUI Yeoreum Yun
2025-09-11 15:22 ` Will Deacon
2025-09-11 16:45 ` Yeoreum Yun
2025-09-12 17:16 ` Catalin Marinas
2025-09-15 9:15 ` Yeoreum Yun
2025-09-12 17:09 ` Catalin Marinas
2025-09-15 8:24 ` Yeoreum Yun
2025-09-01 10:06 ` [PATCH RESEND v7 0/6] support FEAT_LSUI and apply it on futex atomic ops Yeoreum Yun
2025-09-11 15:09 ` Will Deacon
2025-09-11 16:22 ` Catalin Marinas
2025-09-15 20:37 ` Will Deacon
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