From patchwork Thu Sep 3 20:30:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sami Tolvanen X-Patchwork-Id: 11754761 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2BA2F13B1 for ; Thu, 3 Sep 2020 20:33:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12E00208C7 for ; Thu, 3 Sep 2020 20:33:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="foQd1ccG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729618AbgICUdM (ORCPT ); Thu, 3 Sep 2020 16:33:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729576AbgICUcz (ORCPT ); Thu, 3 Sep 2020 16:32:55 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 59AEFC061A03 for ; Thu, 3 Sep 2020 13:31:41 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id k11so4070802ybp.1 for ; Thu, 03 Sep 2020 13:31:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=gZC6Tdrs+v21YOKu6+arkvfjaZ3DhZrnypdcQEca1D0=; b=foQd1ccGGkpo+boEYd5oWFvOEqUFsLOsw7HcQjk7CIRbm5LCTNdOl5wa0EML7/VvYr hSLaVdQouhjHuUbPo9f+4M/xtC0IJ15IspdRTNtqyRPgMX042InznCYV0QaqUuGWaZhX yr7qh5/zqONdjl6THb/gM+tHALShdMZci7V3798taH3nzPLYknSe4WOZdF55ISWlVC3u oLyB9I0hC5kzOIAog1H5BSrk+Esklfb706f6Xf7yzVXsjl9ZpU6T7CFpRH7UhCjFZzfF BO8x4gbp7vwKwvsRhpfOm93Ook2I3FtazoTsJN46AzCHKk4H0tMI+BnAuZN4NELK8Mrk NY9Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=gZC6Tdrs+v21YOKu6+arkvfjaZ3DhZrnypdcQEca1D0=; b=SNnOEnxkb4Eb4YlC1FmjLG1HhNdQDhP8I+j6TL8Zw9Gf4ctcZoWX1NyjJQep2K1h3j ovoE8D34eqRF1bnKDC1Kgo63sjohR44zL5G97vbfUE3EwAAylHZYt/ZoDaLrsEE0uuxO /70YNiy3FSwl+3JPfZQByJIfk8gcNrJjrdGTRmyG00O1nXTGD+y/SwLn7TCTqUCZOky1 Ad98C9BS/yz08dtI4ofyY/TBGgLhc4TKagFXyCPCTZAJpNkuFun9fHCtPQfwc6Pz7TBN HX1c/mwj92hE+SAb1yd+8rK3jJiY7nB+PrmvAamU8XMeKoeNYcbJthGs20teDIan4y9p OlvA== X-Gm-Message-State: AOAM531fvLtZgU15SKGC6Ss12aOpg9heKOQX7njO0Nk4vXM36t+lsd4h GOd1cduazZUWHLjkSwb554bP5FfQy8X92kpkXmA= X-Google-Smtp-Source: ABdhPJyXSwgng3rbQFnr3rvYfakxH4HxONln41kDPV0y/dTw4tzhlXUtl0E/eHCkBgnTPRrKKknIT40to5VxsCjgMHM= X-Received: from samitolvanen1.mtv.corp.google.com ([2620:15c:201:2:f693:9fff:fef4:1b6d]) (user=samitolvanen job=sendgmr) by 2002:a25:d84e:: with SMTP id p75mr5687011ybg.94.1599165100560; Thu, 03 Sep 2020 13:31:40 -0700 (PDT) Date: Thu, 3 Sep 2020 13:30:47 -0700 In-Reply-To: <20200903203053.3411268-1-samitolvanen@google.com> Message-Id: <20200903203053.3411268-23-samitolvanen@google.com> Mime-Version: 1.0 References: <20200624203200.78870-1-samitolvanen@google.com> <20200903203053.3411268-1-samitolvanen@google.com> X-Mailer: git-send-email 2.28.0.526.ge36021eeef-goog Subject: [PATCH v2 22/28] arm64: export CC_USING_PATCHABLE_FUNCTION_ENTRY From: Sami Tolvanen To: Masahiro Yamada , Will Deacon Cc: Peter Zijlstra , Steven Rostedt , Greg Kroah-Hartman , "Paul E. McKenney" , Kees Cook , Nick Desaulniers , clang-built-linux@googlegroups.com, kernel-hardening@lists.openwall.com, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, Sami Tolvanen Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Since arm64 does not use -pg in CC_FLAGS_FTRACE with DYNAMIC_FTRACE_WITH_REGS, skip running recordmcount by exporting CC_USING_PATCHABLE_FUNCTION_ENTRY. Signed-off-by: Sami Tolvanen Reviewed-by: Kees Cook --- arch/arm64/Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile index 130569f90c54..eeaf3c2e0971 100644 --- a/arch/arm64/Makefile +++ b/arch/arm64/Makefile @@ -127,6 +127,7 @@ endif ifeq ($(CONFIG_DYNAMIC_FTRACE_WITH_REGS),y) KBUILD_CPPFLAGS += -DCC_USING_PATCHABLE_FUNCTION_ENTRY CC_FLAGS_FTRACE := -fpatchable-function-entry=2 + export CC_USING_PATCHABLE_FUNCTION_ENTRY := 1 endif # Default value