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Date:   Fri, 14 Jun 2019 11:23:55 +0100
From:   Will Deacon <will.deacon@arm.com>
To:     Dave Martin <Dave.Martin@arm.com>
Cc:     Anisse Astier <aastier@freebox.fr>,
        Catalin Marinas <catalin.marinas@arm.com>,
        linux-arm-kernel@lists.infradead.org,
        Mark Rutland <mark.rutland@arm.com>,
        Richard Henderson <richard.henderson@linaro.org>,
        Rich Felker <dalias@aerifal.cx>, linux-kernel@vger.kernel.org,
        Kristina Martsenko <kristina.martsenko@arm.com>,
        "Dmitry V . Levin" <ldv@altlinux.org>,
        Ricardo Salveti <ricardo@foundries.io>
Subject: Re: [PATCH] arm64/sve: <uapi/asm/ptrace.h> should not depend on
 <uapi/linux/prctl.h>
Message-ID: <20190614102355.GE10659@fuggles.cambridge.arm.com>
References: <20190613163801.21949-1-aastier@freebox.fr>
 <20190613171432.GA2790@e103592.cambridge.arm.com>
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On Thu, Jun 13, 2019 at 06:14:44PM +0100, Dave Martin wrote:
> On Thu, Jun 13, 2019 at 06:38:01PM +0200, Anisse Astier wrote:
> >   */
> > -#define SVE_PT_VL_INHERIT		(PR_SVE_VL_INHERIT >> 16)
> > -#define SVE_PT_VL_ONEXEC		(PR_SVE_SET_VL_ONEXEC >> 16)
> > +#define SVE_PT_VL_INHERIT		(1 << 1) /* PR_SVE_VL_INHERIT */
> > +#define SVE_PT_VL_ONEXEC		(1 << 2) /* PR_SVE_SET_VL_ONEXEC */
> 
> Makes sense, but...
> 
> Since sve_context.h was already introduced to solve a closely related
> problem, I wonder whether we can provide shadow definitions there,
> similarly to way the arm64/include/uapi/asm/ptrace.h definitions are
> derived.  Although it's a slight abuse of that header, I think that
> would be my preferred approach.

Yes, that sounds better to me as well. Please send a v2!

Will