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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E87A3C6FA8E for ; Thu, 2 Mar 2023 13:17:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229836AbjCBNRd (ORCPT ); Thu, 2 Mar 2023 08:17:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48138 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229523AbjCBNRb (ORCPT ); Thu, 2 Mar 2023 08:17:31 -0500 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2DC5F3B0F5 for ; Thu, 2 Mar 2023 05:17:23 -0800 (PST) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4PSBTq2Dr6z4x80; Fri, 3 Mar 2023 00:17:19 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1677763039; bh=0JIQWJKznz7AtiZOyXNJNdwCGrnZhYEwd8v6MXpZZbk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mx3WB01f/BIglEyoyz+c+rctgDHNseoJp9meZk/si0LfJlCdGCBb32q1e/Ju7OZ9c fXqmqO2TeyTW5dj1LmXzJsKsDNHVmNC80eQ5YlYFfXOxIBMVZZaSB1U+0Ql/J0swlZ HpYWMXDdtuuH1WvKQcsjx4DRRY8cSrMlXnL7HX+al/ESHnErySHt/jcQTcTNmJlIeS GVC9R/XgWOd22ZBBJ6fYGZDm5xjhWtTQzVWiAQLA8pHPu4p64HSRTd4gjDsoSY5Z9W Mwiy64D7rMVg/u6kj/lzGJwTsM2wWvU7ouw7MSegeBNawSOrewwjZP4s4IqhHlR48X frBVjzrU/EnoA== From: Michael Ellerman To: Cc: , Subject: [PATCH 2/2] powerpc/64: Use -mtune=pwr10/9/8 for clang Date: Fri, 3 Mar 2023 00:16:56 +1100 Message-Id: <20230302131656.50626-2-mpe@ellerman.id.au> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230302131656.50626-1-mpe@ellerman.id.au> References: <20230302131656.50626-1-mpe@ellerman.id.au> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org For the -mtune option clang doesn't accept power10/9/8, instead it accepts pwr10/9/8. That will be fixed in future versions of clang, but the kernel must support the clang versions in the wild. So add support for the "pwr" spelling if clang is in use. Reported-by: Nathan Chancellor BugLink: https://github.com/ClangBuiltLinux/linux/issues/1799 Signed-off-by: Michael Ellerman --- arch/powerpc/platforms/Kconfig.cputype | 4 ++++ 1 file changed, 4 insertions(+) Need to confirm the clang <= 16 statement is correct. diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 7d7477b73951..e4e0e81be7de 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -278,6 +278,10 @@ config TUNE_CPU default "-mtune=power10" if POWERPC64_CPU && CC_IS_GCC && $(cc-option,-mtune=power10) default "-mtune=power9" if POWERPC64_CPU && CC_IS_GCC && $(cc-option,-mtune=power9) default "-mtune=power8" if POWERPC64_CPU && CC_IS_GCC && $(cc-option,-mtune=power8) + # clang <= 16 only supports the "pwr" names + default "-mtune=pwr10" if POWERPC64_CPU && CC_IS_CLANG && $(cc-option,-mtune=pwr10) + default "-mtune=pwr9" if POWERPC64_CPU && CC_IS_CLANG && $(cc-option,-mtune=pwr9) + default "-mtune=pwr8" if POWERPC64_CPU && CC_IS_CLANG && $(cc-option,-mtune=pwr8) config PPC_BOOK3S def_bool y -- 2.39.2