From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A6D352288D5; Tue, 7 Apr 2026 14:00:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775570430; cv=none; b=Nc8JGuvFhEy/kftzU3hARTSaTlUvG+EsdnHU9M2jYexm0ekqutIdYyEOfxkiKL3zJUQdDQCnNylPA8imGK+xdMIhEUsjDXzHY3RJMuV3MmGKv20piHXMioRQykl1JxbauQzgXelpNKxjdx+bhzO2aGuf/SGKGLQ9n+7DA0rqnBk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775570430; c=relaxed/simple; bh=ylwpwEG1Zp5ZmJr6ruzUlXPmhqsMVhkRkVSp7KXDk1c=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=og4rfJoTGE5zEWeIDmqp1vY/hK6ZYHDv0+2yKUqyHjjgIJqP6svWMLQhKMuQUPBu2dzWbo6WfkhByj/LHoVUnirT+p0OnpW/GEmpkJln07e4W4fZhXCC7EEHXapYSJcx644mUGJ8SXtTrFT3pbFToKGlZYr/DaUW5yZTBro6vmM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=CSA4SIBb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="CSA4SIBb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5B4DFC116C6; Tue, 7 Apr 2026 14:00:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1775570430; bh=ylwpwEG1Zp5ZmJr6ruzUlXPmhqsMVhkRkVSp7KXDk1c=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=CSA4SIBbZwcUH6Wvq28nMitrw6feeDhAG87iwCA0o240/79+cYbvNWxU0JZpEUnRj zHXDoEzBzHUhIuJOAFq/8jZ1UahrfJNsCQWIH2HzksUb/0FZrDqWxq45x9wJI6xMAE mRm1918vlQVhqopG/gWAHwoH8C8CXcj+uzpeEGFb4NhswoGHwT9cPbvBvGYPsal9h0 l3YZ658hIJCu6j1n8jay2QbR0vBAyWTYoMvhYs3ahv55X4A+dP0CERPVO/SJsHJq4f 90hJnbMNri3Jbeafb+97/wsJe0tm1kbZAYoyTM0iLaI1WYF6GBzgZ/x7rj4ajosGFE vMzLYTTe6RugQ== Message-ID: <0cbb6ee2-e4df-4161-9378-f2b63e849683@kernel.org> Date: Tue, 7 Apr 2026 16:00:24 +0200 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] docs: proc: document ProtectionKey in smaps To: Kevin Brodsky , linux-doc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Yury Khrustalev , Jonathan Corbet , Shuah Khan , Dave Hansen , Andrew Morton , Lorenzo Stoakes , Vlastimil Babka , Mark Rutland , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org References: <20260407125133.564182-1-kevin.brodsky@arm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 4/7/26 14:51, Kevin Brodsky wrote: > The ProtectionKey entry was added in v4.9; back then it was > x86-specific, but it now lives in generic code and applies to all > architectures supporting pkeys (currently x86, power, arm64). > > Time to document it: add a paragraph to proc.rst about the > ProtectionKey entry. > > Reported-by: Yury Khrustalev > Signed-off-by: Kevin Brodsky > --- > Cc: Jonathan Corbet > Cc: Shuah Khan > Cc: Dave Hansen > Cc: Andrew Morton > Cc: Lorenzo Stoakes > Cc: Vlastimil Babka > Cc: David Hildenbrand > Cc: Mark Rutland > Cc: linux-fsdevel@vger.kernel.org > Cc: linux-mm@kvack.org > --- > Documentation/filesystems/proc.rst | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst > index b0c0d1b45b99..d673cad7dbe4 100644 > --- a/Documentation/filesystems/proc.rst > +++ b/Documentation/filesystems/proc.rst > @@ -549,6 +549,10 @@ does not take into account swapped out page of underlying shmem objects. > naturally aligned THP pages of any currently enabled size. 1 if true, 0 > otherwise. > > +If both the kernel and the system support protection keys (pkeys), > +"ProtectionKey" indicates the memory protection key associated with the > +virtual memory area. Reviewed-by: David Hildenbrand (Arm) -- Cheers, David