From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id F23FF3C7DEB; Thu, 21 May 2026 12:01:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779364883; cv=none; b=YdE2tbme7RxcOAdLjpwckqfxEw4u3He5Foof3lEgYFdANZHI+zrpEglqnr0e6xn/QgnjU/2CvvjN7P29YusHBbt+YGqRSPyfRYEzmZ99kuUl/1w6ckh+W1R773Tly/kL2QvEbUpdNuqobjhIM7UvbB+KS7/Q9YvJGfcJne94hgA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779364883; c=relaxed/simple; bh=AKox+I3lfcI7F4Zd1m11OMejg4p8pbjFloWjUNceEro=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=UoGHaDIY3xZbX3O4RLOry6BaTqq1MeXQQWbICMIYgxfeQ21oJf16yVNAxxup8th7XRue+9N6Y46Xehh+yzxxxJvgNLFN44XA9twXfm6aizAv1+eaW+U7Chahj9oXMKYnGi5/3OmIAj/A0gCVY5/NLcaFpiATJ4rImGk9DmWXJNQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=inUFKYNu; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="inUFKYNu" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 336DD35FA; Thu, 21 May 2026 05:01:16 -0700 (PDT) Received: from [10.57.91.210] (unknown [10.57.91.210]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7FF063F7B4; Thu, 21 May 2026 05:01:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1779364881; bh=AKox+I3lfcI7F4Zd1m11OMejg4p8pbjFloWjUNceEro=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=inUFKYNuwBXm2ITxleIMuYo8OlLrBV5ZX56ZvsglK23uoBnzOYxGy9jglFtf9Xwj6 iaasWDrS0c/gjMrHsajAiSmp3i935puDPddekm5/K2wexEFlnAwtnKpkMjmDCKW98I lha84eQI3hGwv9GYba3f81qwwMQ6qV5LX6zUEQZA= Message-ID: Date: Thu, 21 May 2026 14:01:17 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] kselftest/arm64: Add test for atomic futex uaccess with POE To: Mark Brown Cc: linux-arm-kernel@lists.infradead.org, Catalin Marinas , Joey Gouly , Shuah Khan , Will Deacon , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org References: <20260521-poe_futex-v1-0-1da286b8f9b2@arm.com> <20260521-poe_futex-v1-2-1da286b8f9b2@arm.com> <8fc7713d-6451-4f05-86cd-df833cedd94b@sirena.org.uk> From: Kevin Brodsky Content-Language: en-GB In-Reply-To: <8fc7713d-6451-4f05-86cd-df833cedd94b@sirena.org.uk> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 21/05/2026 13:22, Mark Brown wrote: > On Thu, May 21, 2026 at 10:42:31AM +0100, Kevin Brodsky wrote: > >> Add a new test to ensure that atomic futex uaccess succeeds on >> memory mapped with a non-default POIndex/pkey. >> + ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, >> + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); >> + ASSERT_NE(ptr, MAP_FAILED); > Doesn't matter while there's only one test but we should probably > munmap() this when we're done. Fair enough, I was being lazy :) A pkey_free() is also in order to be comprehensive, another wrapper to add. I considered using ../../mm/pkey-helpers.h but helpers there aren't implemented inline... Maybe refactoring for later. - Kevin