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=-9.0 required=3.0 tests=INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 3E5BEC43387 for ; Fri, 21 Dec 2018 17:41:04 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E43A22190A for ; Fri, 21 Dec 2018 17:41:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E43A22190A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43Lws957JSzDqYW for ; Sat, 22 Dec 2018 04:41:01 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nxp.com (client-ip=92.121.34.21; helo=inva021.nxp.com; envelope-from=diana.craciun@nxp.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=nxp.com Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43Lwdy20GyzDr28 for ; Sat, 22 Dec 2018 04:31:16 +1100 (AEDT) Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 450622000C4; Fri, 21 Dec 2018 18:31:13 +0100 (CET) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 396B3200002; Fri, 21 Dec 2018 18:31:13 +0100 (CET) Received: from fsr-ub1664-009.ea.freescale.net (fsr-ub1664-009.ea.freescale.net [10.171.71.77]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id 02031205E9; Fri, 21 Dec 2018 18:31:12 +0100 (CET) From: Diana Craciun To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH 02/11 v2] powerpc/fsl: Add macro to flush the branch predictor Date: Fri, 21 Dec 2018 19:30:28 +0200 Message-Id: <1545413437-5538-3-git-send-email-diana.craciun@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1545413437-5538-1-git-send-email-diana.craciun@nxp.com> References: <1545413437-5538-1-git-send-email-diana.craciun@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Diana Craciun Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" The BUCSR register can be used to invalidate the entries in the branch prediction mechanisms. Signed-off-by: Diana Craciun --- v1-->v2 - no change arch/powerpc/include/asm/ppc_asm.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/powerpc/include/asm/ppc_asm.h b/arch/powerpc/include/asm/ppc_asm.h index b5d0236..5c901bf 100644 --- a/arch/powerpc/include/asm/ppc_asm.h +++ b/arch/powerpc/include/asm/ppc_asm.h @@ -821,4 +821,14 @@ END_FTR_SECTION_IFCLR(CPU_FTR_601) stringify_in_c(.long (_target) - . ;) \ stringify_in_c(.previous) +#ifdef CONFIG_PPC_FSL_BOOK3E +#define BTB_FLUSH(reg) \ + lis reg,BUCSR_INIT@h; \ + ori reg,reg,BUCSR_INIT@l; \ + mtspr SPRN_BUCSR,reg; \ + isync; +#else +#define BTB_FLUSH(reg) +#endif /* CONFIG_PPC_FSL_BOOK3E */ + #endif /* _ASM_POWERPC_PPC_ASM_H */ -- 2.5.5