From patchwork Wed May 12 14:43:17 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 438648 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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT 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 93B60C43461 for ; Wed, 12 May 2021 15:17:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6204E61C36 for ; Wed, 12 May 2021 15:17:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232845AbhELPSN (ORCPT ); Wed, 12 May 2021 11:18:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:50548 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234272AbhELPQV (ORCPT ); Wed, 12 May 2021 11:16:21 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6F79F61979; Wed, 12 May 2021 15:06:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620831967; bh=1KwjSEPuyYELqNeMMr9CppIyN2C+J6HxBghmNQPymyM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SiBk/di5dFMMpBxvpT71ZL6HuBAm0MpsGEoDHjJZsgy4bWDly+1ZCloa2z7+tu4X0 tZk8HS5bOZ4FqsztN/dspUXwwx+7FoBlw9JcXgsFAbMvctNuDg6RZCh1M2BOVZBbeQ dsreJtAqUFLS5ol/AMUGfplxmIL5GdSdIx03MDa0= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Vasily Gorbik , David Hildenbrand , Christian Borntraeger , Cornelia Huck , Janosch Frank , Heiko Carstens Subject: [PATCH 5.10 087/530] s390: fix detection of vector enhancements facility 1 vs. vector packed decimal facility Date: Wed, 12 May 2021 16:43:17 +0200 Message-Id: <20210512144822.645889783@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144819.664462530@linuxfoundation.org> References: <20210512144819.664462530@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: David Hildenbrand commit b208108638c4bd3215792415944467c36f5dfd97 upstream. The PoP documents: 134: The vector packed decimal facility is installed in the z/Architecture architectural mode. When bit 134 is one, bit 129 is also one. 135: The vector enhancements facility 1 is installed in the z/Architecture architectural mode. When bit 135 is one, bit 129 is also one. Looks like we confuse the vector enhancements facility 1 ("EXT") with the Vector packed decimal facility ("BCD"). Let's fix the facility checks. Detected while working on QEMU/tcg z14 support and only unlocking the vector enhancements facility 1, but not the vector packed decimal facility. Fixes: 2583b848cad0 ("s390: report new vector facilities") Cc: Vasily Gorbik Signed-off-by: David Hildenbrand Reviewed-by: Christian Borntraeger Reviewed-by: Cornelia Huck Reviewed-by: Janosch Frank Link: https://lore.kernel.org/r/20210503121244.25232-1-david@redhat.com Signed-off-by: Heiko Carstens Signed-off-by: Greg Kroah-Hartman --- arch/s390/kernel/setup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -925,9 +925,9 @@ static int __init setup_hwcaps(void) if (MACHINE_HAS_VX) { elf_hwcap |= HWCAP_S390_VXRS; if (test_facility(134)) - elf_hwcap |= HWCAP_S390_VXRS_EXT; - if (test_facility(135)) elf_hwcap |= HWCAP_S390_VXRS_BCD; + if (test_facility(135)) + elf_hwcap |= HWCAP_S390_VXRS_EXT; if (test_facility(148)) elf_hwcap |= HWCAP_S390_VXRS_EXT2; if (test_facility(152))