From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C70F0C433FF for ; Sun, 28 Jul 2019 14:37:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9AAB42064C for ; Sun, 28 Jul 2019 14:37:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564324653; bh=N9wq1E/HquH4VxKibyh0Xk1LhplvO32iq3CEBuqAVWU=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=XLEqu++V/HpWrFz4JhyoJ2hhrWoQ9+UwMYKKfOxpNteqmjARbSAexCBFHC01np5Wa jzE5NaYAqDzAhFt0WklBpDry+W79Tlt2wEheUjT/iCmueYCDxsxu1onXczI+Ofqo3x MZ6KCXGcimlXUS3xYpgNw/DqvJHtHEucjuCSobpw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726173AbfG1Ohc (ORCPT ); Sun, 28 Jul 2019 10:37:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:40832 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726032AbfG1Ohc (ORCPT ); Sun, 28 Jul 2019 10:37:32 -0400 Received: from mail-wr1-f49.google.com (mail-wr1-f49.google.com [209.85.221.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id ECF20216B7 for ; Sun, 28 Jul 2019 14:37:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1564324651; bh=N9wq1E/HquH4VxKibyh0Xk1LhplvO32iq3CEBuqAVWU=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=AoM+LRLoFy1Q/8/GCIhERvnjrv03YUKqcjItxuvI3uQFdkZOwCyEXWVykGj4h/Oy0 ItUDDEcgWU4K6lXW1GazAzjcBa8KtYRnz9MjO5TlttNemlLZuCsb+C2/ZyX3kxK4L0 tO3iQ3I0HHJStcuEDcxsCMpPvzaprYZHbjgVu6Zo= Received: by mail-wr1-f49.google.com with SMTP id z1so59047386wru.13 for ; Sun, 28 Jul 2019 07:37:30 -0700 (PDT) X-Gm-Message-State: APjAAAWAopDQNj0Iwz8BryRmLU5ni0mL5b1eNzouD6u4QrJ9tJn4VQzz HU/gdPvubsPuFmXZkdDUslSrYFOUZB5vTYOi6ue6/A== X-Google-Smtp-Source: APXvYqxqjJp3XvQiEZhET9n8ZMGY72nI8z8fMmxWbnzKLjgNDVeJMtZj2llThVjXB90XfqsG/ghs0AyLAPj+2Fl15sc= X-Received: by 2002:adf:dd0f:: with SMTP id a15mr27171962wrm.265.1564324649417; Sun, 28 Jul 2019 07:37:29 -0700 (PDT) MIME-Version: 1.0 References: <20190728131251.622415456@linutronix.de> <20190728131648.695579736@linutronix.de> In-Reply-To: <20190728131648.695579736@linutronix.de> From: Andy Lutomirski Date: Sun, 28 Jul 2019 07:37:18 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [patch 2/5] lib/vdso: Move fallback invocation to the callers To: Thomas Gleixner Cc: LKML , X86 ML , Andy Lutomirski , Vincenzo Frascino , Sean Christopherson , Kees Cook , Paul Bolle , Will Deacon Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jul 28, 2019 at 6:20 AM Thomas Gleixner wrote: > > To allow syscall fallbacks using the legacy 32bit syscall for 32bit VDSO > builds, move the fallback invocation out into the callers. > > Split the common code out of __cvdso_clock_gettime/getres() and invoke the > syscall fallback in the 64bit and 32bit variants. > > Preparatory work for using legacy syscalls in 32bit VDSO. No functional > change. Reviewed-by: Andy Lutomirski