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Date: Sat, 15 Jun 2024 15:26:42 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: K Prateek Nayak <kprateek.nayak@....com>
Cc: linux-kernel@...r.kernel.org,
	"Gautham R. Shenoy" <gautham.shenoy@....com>,
	Richard Henderson <richard.henderson@...aro.org>,
	Ivan Kokshaysky <ink@...assic.park.msu.ru>,
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	Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
	Stafford Horne <shorne@...il.com>,
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
	Helge Deller <deller@....de>, Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	"Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
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	Brian Gerst <brgerst@...il.com>, Leonardo Bras <leobras@...hat.com>,
	Imran Khan <imran.f.khan@...cle.com>,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Rik van Riel <riel@...riel.com>,
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	David Vernet <void@...ifault.com>,
	Julia Lawall <julia.lawall@...ia.fr>, linux-alpha@...r.kernel.org,
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	x86@...nel.org
Subject: Re: [PATCH v2 00/14] Introducing TIF_NOTIFY_IPI flag

On Thu, Jun 13, 2024 at 06:15:59PM +0000, K Prateek Nayak wrote:
> o Dropping the ARM results since I never got my hands on the ARM64
>   system I used in my last testing. If I do manage to get my hands on it
>   again, I'll rerun the experiments and share the results on the thread.
>   To test the case where TIF_NOTIFY_IPI is not enabled for a particular
>   architecture, I applied the series only until Patch 3 and tested the
>   same on my x86 machine with a WARN_ON_ONCE() in do_idle() to check if
>   tif_notify_ipi() ever return true and then repeated the same with
>   Patch 4 applied.

Confused. ARM (32-bit) or ARM64? You patch 32-bit ARM, but you don't
touch 64-bit Arm. "ARM" on its own in the context above to me suggests
32-bit, since you refer to ARM64 later.

-- 
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!

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