Re: [RFCv2 03/10] x86: Introduce userspace API to handle per-thread features

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To: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Subject: Re: [RFCv2 03/10] x86: Introduce userspace API to handle per-thread features
From: Alexander Potapenko <glider@xxxxxxxxxx>
Date: Fri, 13 May 2022 16:09:05 +0200
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, "the arch/x86 maintainers" <x86@xxxxxxxxxx>, Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>, "H . J . Lu" <hjl.tools@xxxxxxxxx>, Andi Kleen <ak@xxxxxxxxxxxxxxx>, Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx>, Linux Memory Management List <linux-mm@xxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <20220511022751.65540-5-kirill.shutemov@linux.intel.com>
References: <20220511022751.65540-1-kirill.shutemov@linux.intel.com> <20220511022751.65540-5-kirill.shutemov@linux.intel.com>

> +
> +       /* Handle ARCH_THREAD_FEATURE_ENABLE */
> +
> +       task->thread.features |= features;
> +out:
> +       return task->thread.features;
Isn't arch_prctl() supposed to return 0 on success?

Follow-Ups:
- Re: [RFCv2 03/10] x86: Introduce userspace API to handle per-thread features
  - From: Edgecombe, Rick P

References:
- [RFCv2 00/10] Linear Address Masking enabling
  - From: Kirill A. Shutemov
- [RFCv2 03/10] x86: Introduce userspace API to handle per-thread features
  - From: Kirill A. Shutemov

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