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Date: Wed, 12 Feb 2020 09:28:00 +0000
From: Catalin Marinas <>
To: Kees Cook <>
Cc: Ingo Molnar <>, Hector Marco-Gisbert <>,
	Will Deacon <>,
	Jason Gunthorpe <>, Jann Horn <>,
	Russell King <>,,,,,
Subject: Re: [PATCH v3 6/7] arm64, elf: Disable automatic READ_IMPLIES_EXEC
 for 64-bit address spaces

On Mon, Feb 10, 2020 at 11:30:48AM -0800, Kees Cook wrote:
> With arm64 64-bit environments, there should never be a need for automatic
> READ_IMPLIES_EXEC, as the architecture has always been execute-bit aware
> (as in, the default memory protection should be NX unless a region
> explicitly requests to be executable).
> Suggested-by: Hector Marco-Gisbert <>
> Signed-off-by: Kees Cook <>

Reviewed-by: Catalin Marinas <>

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