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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 278B6C4360C for ; Thu, 26 Sep 2019 20:17:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0066F222C2 for ; Thu, 26 Sep 2019 20:17:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728786AbfIZURv (ORCPT ); Thu, 26 Sep 2019 16:17:51 -0400 Received: from foss.arm.com ([217.140.110.172]:59030 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727857AbfIZURu (ORCPT ); Thu, 26 Sep 2019 16:17:50 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 405EF142F; Thu, 26 Sep 2019 13:17:50 -0700 (PDT) Received: from [172.23.27.158] (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E485D3F67D; Thu, 26 Sep 2019 13:17:45 -0700 (PDT) Subject: Re: [PATCH v2 2/4] arm64: vdso32: Detect binutils support for dmb ishld To: Catalin Marinas Cc: ard.biesheuvel@linaro.org, ndesaulniers@google.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, will@kernel.org, linux-arm-kernel@lists.infradead.org References: <20190926133805.52348-1-vincenzo.frascino@arm.com> <20190926133805.52348-3-vincenzo.frascino@arm.com> <20190926142642.GF9689@arrakis.emea.arm.com> From: Vincenzo Frascino Message-ID: <88d1b318-5c20-b3f4-6c24-60917c673f91@arm.com> Date: Thu, 26 Sep 2019 21:19:23 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20190926142642.GF9689@arrakis.emea.arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/26/19 3:26 PM, Catalin Marinas wrote: > On Thu, Sep 26, 2019 at 02:38:03PM +0100, Vincenzo Frascino wrote: >> diff --git a/arch/arm64/Kbuild b/arch/arm64/Kbuild >> index d6465823b281..75cf8c796d0e 100644 >> --- a/arch/arm64/Kbuild >> +++ b/arch/arm64/Kbuild >> @@ -4,3 +4,9 @@ obj-$(CONFIG_NET) += net/ >> obj-$(CONFIG_KVM) += kvm/ >> obj-$(CONFIG_XEN) += xen/ >> obj-$(CONFIG_CRYPTO) += crypto/ >> + >> +# as-instr-compat >> +# Usage: cflags-y += $(call as-instr-compat,instr,option1,option2) >> + >> +as-instr-compat = $(call try-run,\ >> + printf "%b\n" "$(1)" | $(COMPATCC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" -,$(2),$(3)) > > This doesn't seem to be used anywhere. Was it meant to be replaced by > cc32-as-instr? > Forgot to squash a stash here. Will fix in v3. This is not used anymore was just an experiment. -- Regards, Vincenzo