linux-kernel - Re: [PATCH 1/8] x86/mm/pat: cpa-test: fix length for CPA

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Message-ID: <20250103111959.GD22934@noisy.programming.kicks-ass.net>
Date: Fri, 3 Jan 2025 12:19:59 +0100
From: Peter Zijlstra <peterz@...radead.org>
To: Mike Rapoport <rppt@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Andy Lutomirski <luto@...nel.org>,
	Anton Ivanov <anton.ivanov@...bridgegreys.com>,
	Borislav Petkov <bp@...en8.de>,
	Brendan Higgins <brendan.higgins@...ux.dev>,
	Daniel Gomez <da.gomez@...sung.com>,
	Daniel Thompson <danielt@...nel.org>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	David Gow <davidgow@...gle.com>,
	Douglas Anderson <dianders@...omium.org>,
	Ingo Molnar <mingo@...hat.com>,
	Jason Wessel <jason.wessel@...driver.com>,
	Jiri Kosina <jikos@...nel.org>,
	Joe Lawrence <joe.lawrence@...hat.com>,
	Johannes Berg <johannes@...solutions.net>,
	Josh Poimboeuf <jpoimboe@...nel.org>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
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	Mark Rutland <mark.rutland@....com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Miroslav Benes <mbenes@...e.cz>, "H. Peter Anvin" <hpa@...or.com>,
	Petr Mladek <pmladek@...e.com>, Petr Pavlu <petr.pavlu@...e.com>,
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	Steven Rostedt <rostedt@...dmis.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	kgdb-bugreport@...ts.sourceforge.net, kunit-dev@...glegroups.com,
	linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
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	live-patching@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH 1/8] x86/mm/pat: cpa-test: fix length for CPA_ARRAY test

On Fri, Dec 27, 2024 at 09:28:18AM +0200, Mike Rapoport wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@...nel.org>
> 
> The CPA_ARRAY test always uses len[1] as numpages argument to
> change_page_attr_set() although the addresses array is different each
> iteration of the test loop.
> 
> Replace len[1] with len[i] to have numpages matching the addresses array.

D'oh..