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=-6.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 5A3BAC282E5 for ; Thu, 23 May 2019 19:20:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27BD921841 for ; Thu, 23 May 2019 19:20:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558639227; bh=WQpS+fRauMMgJLnanTA/0cSISLnXN00vNZWmvrFuKg0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=JNWVrmuP4AdKq+Dvzpk3GLtrIRSl8E3DGkYLWjCJCnhhAkDTcjQGUxvc7dkJFkQ5s uG1pCnCjuZ1e2InC+1+m7l8Mut9X9WlSPsFRkrkNWPIhdPCtKoUL3WWy6/UaVBvpVE 8Mq9KMmfgGXFd4xJaAPv1bsllMZ2RLagDm7haSxA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390041AbfEWTU0 (ORCPT ); Thu, 23 May 2019 15:20:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:57172 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390000AbfEWTUY (ORCPT ); Thu, 23 May 2019 15:20:24 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4BCFC21851; Thu, 23 May 2019 19:20:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1558639223; bh=WQpS+fRauMMgJLnanTA/0cSISLnXN00vNZWmvrFuKg0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YYdFVnpN7qIZ8NDYIDH8VsnKKKXc89vgGEdiGRSClnN2KDWJsmLhl2kyt9tBHePFS /H5OcCWhJEHmkdkYT/wxH/yvLFBnbe8W3lMCnyoO96BzCRGjdI7he568yVMu1j3RIK FKBUOOIVyjpATGLeudvYsx6qjzxWEhbD/g96kYJA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Helge Deller Subject: [PATCH 5.0 025/139] parisc: Add memory barrier to asm pdc and sync instructions Date: Thu, 23 May 2019 21:05:13 +0200 Message-Id: <20190523181724.000772332@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190523181720.120897565@linuxfoundation.org> References: <20190523181720.120897565@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Helge Deller commit 2d94a832e246ac00fd32eec241e6f1aa6fbc5700 upstream. Add compiler memory barriers to ensure the compiler doesn't reorder memory operations around these instructions. Cc: stable@vger.kernel.org # v4.20+ Fixes: 3847dab77421 ("parisc: Add alternative coding infrastructure") Signed-off-by: Helge Deller Signed-off-by: Greg Kroah-Hartman --- arch/parisc/include/asm/cache.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/arch/parisc/include/asm/cache.h +++ b/arch/parisc/include/asm/cache.h @@ -56,10 +56,10 @@ void parisc_setup_cache_timing(void); #define asm_io_fdc(addr) asm volatile("fdc %%r0(%0)" \ ALTERNATIVE(ALT_COND_NO_DCACHE, INSN_NOP) \ ALTERNATIVE(ALT_COND_NO_IOC_FDC, INSN_NOP) \ - : : "r" (addr)) + : : "r" (addr) : "memory") #define asm_io_sync() asm volatile("sync" \ ALTERNATIVE(ALT_COND_NO_DCACHE, INSN_NOP) \ - ALTERNATIVE(ALT_COND_NO_IOC_FDC, INSN_NOP) :: ) + ALTERNATIVE(ALT_COND_NO_IOC_FDC, INSN_NOP) :::"memory") #endif /* ! __ASSEMBLY__ */