linux-kernel - RE: [PATCH v2 3/8] arm64: Add hardware prefetch control support for ARM64

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Date:   Mon, 4 Apr 2022 11:56:32 +0000
From:   "tarumizu.kohei@...itsu.com" <tarumizu.kohei@...itsu.com>
To:     'Rob Herring' <robh@...nel.org>
CC:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        X86 ML <x86@...nel.org>, "H. Peter Anvin" <hpa@...or.com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2 3/8] arm64: Add hardware prefetch control support for
 ARM64

> This has nothing to do with arm64 arch other than you access registers as sysregs.
> That's not enough of a reason to put in arch/arm64. Move this to drivers/
> assuming it continues. I agree that this seems questionable to expose to
> userspace in the first place...

I move it under drivers/ in the next version.