From: Kevin Brodsky <kevin.brodsky@arm.com>
To: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org,
Catalin Marinas <catalin.marinas@arm.com>,
Joey Gouly <joey.gouly@arm.com>, Shuah Khan <shuah@kernel.org>,
Will Deacon <will@kernel.org>,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: Re: [PATCH 2/2] kselftest/arm64: Add test for atomic futex uaccess with POE
Date: Thu, 21 May 2026 14:01:17 +0200 [thread overview]
Message-ID: <c140c0da-4ad7-48ed-ad83-663ada282b14@arm.com> (raw)
In-Reply-To: <8fc7713d-6451-4f05-86cd-df833cedd94b@sirena.org.uk>
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
next prev parent reply other threads:[~2026-05-21 12:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-21 9:42 [PATCH 0/2] Add test for atomic uaccess with permission overlay Kevin Brodsky
2026-05-21 9:42 ` [PATCH 1/2] arm64: mm: Add note about overlays in PIE_EL1 Kevin Brodsky
2026-05-21 9:48 ` Kevin Brodsky
2026-05-22 9:20 ` Yeoreum Yun
2026-05-21 9:42 ` [PATCH 2/2] kselftest/arm64: Add test for atomic futex uaccess with POE Kevin Brodsky
2026-05-21 11:22 ` Mark Brown
2026-05-21 12:01 ` Kevin Brodsky [this message]
2026-05-21 12:06 ` Mark Brown
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