From: Dave Hansen <dave.hansen@intel.com>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: mathieu.desnoyers@efficios.com, peterz@infradead.org,
boqun.feng@gmail.com, tglx@linutronix.de, mingo@redhat.com,
bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com,
aruna.ramakrishna@oracle.com, elver@google.com,
"Paul E. McKenney" <paulmck@kernel.org>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/4] pkeys: add API to switch to permissive pkey register
Date: Wed, 26 Feb 2025 09:21:39 -0800 [thread overview]
Message-ID: <feefc184-d0eb-4eb9-a495-b7ea6774208c@intel.com> (raw)
In-Reply-To: <CACT4Y+awOeS8aDkCTJbf4DQXui6pGhVadMkU6ukxnNA6ue88pA@mail.gmail.com>
On 2/26/25 02:00, Dmitry Vyukov wrote:
>> We could typedef it to some fake struct. Such a struct can't be passed
>> to any function accepting an integer type (real pkeys), and any
>> arithmetic won't work on it.
> Dave, how should we proceed? Do you think this is a potential misuse
> worth preventing proactively? If yes, I can send v7.
I don't think it's worth doing anything too weird. Defining some kind of
special struct would be pretty weird.
next prev parent reply other threads:[~2025-02-26 17:21 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1739790300.git.dvyukov@google.com>
2025-02-17 11:07 ` [PATCH 1/4] pkeys: add API to switch to permissive pkey register Dmitry Vyukov
2025-02-17 20:03 ` Mathieu Desnoyers
2025-02-17 20:08 ` Mathieu Desnoyers
2025-02-17 20:09 ` Mathieu Desnoyers
2025-02-21 17:01 ` Dave Hansen
2025-02-24 13:25 ` Dmitry Vyukov
2025-02-25 16:15 ` Dave Hansen
2025-02-25 21:56 ` Dmitry Vyukov
2025-02-26 10:00 ` Dmitry Vyukov
2025-02-26 17:21 ` Dave Hansen [this message]
2025-02-27 13:58 ` Dmitry Vyukov
2025-02-21 17:37 ` Dave Hansen
2025-02-17 11:07 ` [PATCH 2/4] x86/signal: Use switch_to_permissive_pkey_reg() helper Dmitry Vyukov
2025-02-21 16:26 ` Dave Hansen
2025-02-24 13:13 ` Dmitry Vyukov
2025-02-17 11:07 ` [PATCH 3/4] rseq: Make rseq work with protection keys Dmitry Vyukov
2025-02-17 20:21 ` Mathieu Desnoyers
2025-02-18 7:55 ` Dmitry Vyukov
2025-02-18 14:57 ` Mathieu Desnoyers
2025-02-18 15:10 ` Dmitry Vyukov
2025-02-18 15:27 ` Mathieu Desnoyers
2025-02-18 15:37 ` Dmitry Vyukov
2025-02-21 11:22 ` Dmitry Vyukov
2025-02-21 19:41 ` Mathieu Desnoyers
2025-02-21 17:17 ` Dave Hansen
2025-02-21 19:38 ` Mathieu Desnoyers
2025-02-21 19:48 ` Dave Hansen
2025-02-21 20:05 ` Mathieu Desnoyers
2025-02-21 20:50 ` Dave Hansen
2025-02-21 21:11 ` Mathieu Desnoyers
2025-02-21 21:36 ` Mathieu Desnoyers
2025-02-21 21:45 ` Dave Hansen
2025-02-24 13:35 ` Dmitry Vyukov
2025-02-21 21:40 ` Dave Hansen
2025-02-17 11:07 ` [PATCH 4/4] selftests/rseq: Add test for rseq+pkeys Dmitry Vyukov
2025-02-17 20:23 ` Mathieu Desnoyers
2025-02-21 17:24 ` Dave Hansen
2025-02-24 13:22 ` Dmitry Vyukov
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