linux-kernel - Re: [PATCH v16 5/5] x86: vdso: Wire up getrandom() vDSO implementation

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Date: Wed, 05 Jun 2024 23:41:44 +0200
From: Thomas Gleixner <tglx@...utronix.de>
To: "Jason A. Donenfeld" <Jason@...c4.com>, linux-kernel@...r.kernel.org,
 patches@...ts.linux.dev
Cc: "Jason A. Donenfeld" <Jason@...c4.com>, linux-crypto@...r.kernel.org,
 linux-api@...r.kernel.org, x86@...nel.org, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>, Adhemerval Zanella Netto
 <adhemerval.zanella@...aro.org>, Carlos O'Donell <carlos@...hat.com>,
 Florian Weimer <fweimer@...hat.com>, Arnd Bergmann <arnd@...db.de>, Jann
 Horn <jannh@...gle.com>, Christian Brauner <brauner@...nel.org>, David
 Hildenbrand <dhildenb@...hat.com>, Samuel Neves <sneves@....uc.pt>
Subject: Re: [PATCH v16 5/5] x86: vdso: Wire up getrandom() vDSO implementation

On Tue, May 28 2024 at 14:19, Jason A. Donenfeld wrote:
> +
> +static __always_inline const struct vdso_rng_data *__arch_get_vdso_rng_data(void)
> +{
> +	if (__vdso_data->clock_mode == VDSO_CLOCKMODE_TIMENS)

Lacks an IS_ENABLED(CONFIG_TIMENS)

> +		return (void *)&__vdso_rng_data + ((void *)&__timens_vdso_data - (void *)&__vdso_data);
> +	return &__vdso_rng_data;
> +}

Thanks,

        tglx