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From: Mark Brown <broonie@kernel.org>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Shuah Khan <skhan@linuxfoundation.org>,
	Will Deacon <will@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	Vincenzo Frascino <vincenzo.frascino@arm.com>,
	linux-kselftest@vger.kernel.org, Shuah Khan <shuah@kernel.org>
Subject: Re: [PATCH v3 0/5] arm64: vdso: getcpu() support
Date: Tue, 1 Sep 2020 11:46:52 +0100	[thread overview]
Message-ID: <20200901104652.GA6262@sirena.org.uk> (raw)
In-Reply-To: <20200901092551.GG5561@gaia>

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On Tue, Sep 01, 2020 at 10:25:52AM +0100, Catalin Marinas wrote:

> Thanks Shuah for the ack. We are still pondering whether the merge these
> patches as they have some limitations (the per-CPU data structures may
> not fit in the sole data vDSO page).

They definitely don't fit, I did have some half-written proof of concept
patches that I posted that extend this but I was waiting to see if there
was any interest in a vDSO getcpu() at all before taking it further.
Vincenzo's work on doing the multipage user data that he announced at
Plumbers would cover it as well, I hadn't been aware of that.

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      reply	other threads:[~2020-09-01 10:47 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-19 12:13 [PATCH v3 0/5] arm64: vdso: getcpu() support Mark Brown
2020-08-19 12:13 ` [PATCH v3 1/5] arm64: vdso: Provide a define when building the vDSO Mark Brown
2020-08-19 12:13 ` [PATCH v3 2/5] arm64: vdso: Add per-CPU data Mark Brown
2020-08-19 12:13 ` [PATCH v3 3/5] arm64: vdso: Initialise the per-CPU vDSO data Mark Brown
2020-08-19 12:13 ` [PATCH v3 4/5] arm64: vdso: Add getcpu() implementation Mark Brown
2020-08-19 12:13 ` [PATCH v3 5/5] selftests: vdso: Support arm64 in getcpu() test Mark Brown
2020-08-31 21:47 ` [PATCH v3 0/5] arm64: vdso: getcpu() support Shuah Khan
2020-09-01  9:25   ` Catalin Marinas
2020-09-01 10:46     ` Mark Brown [this message]

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