From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2179907-1518720295-2-6950305259897949571 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.001, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1518720294; b=R45zw+ClhHlCKCu/s3RqQOXQKXmQFSmJhtyXz/uDGqzjFnD Vlq3qrLIo78kibX9A5UCDedsXqbPiTxEUcx5k/b45TapXSs2k69ylhnSe+y3vrUS 0LIdeTqgKBkxzIAfkK+OTempn/Wieu7CvZDVuvJ4w7oPi3U4kww1f4Tc7JiI4Ixr I6SiTR/LZ0QDWSyBJKakrim1a/3m8MPJxiUrAhuJtSG+yZzIzjfB2/IpuVIKQRUO 6E8z/KV/H9avrIalg9yAZvnhcKLBdbB4A7ly8PjDtQb6RMbtHaruLKVy/KbNS0F1 BArUJjC3Pua3Jt4jwZ8I28FXszh7f6/j24WxD5Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1518720294; bh=W434HqLNjxqYGO/9T3OiuXUo4H 6gC5DU3Bkh4lgG+XQ=; b=ZfYQoerbskUqjJgvoNLC5jx/28+31ix6Wzd8zhQsXx cHqn+tIUAp/OsKaBV24DNMKK/uX9viZwWs+N8Qi1xWDNxsdpJW307/PW6DzQpPkJ YeNZVjJvG3qBpr32/B/UNYS9z4k2nz1sYwUJtwsfZladIpSQU4IYWhP72FQUw1A7 UFG6yxLzv0HULs5iL/ytAXEQwTIUfw5xZwyv1SgI1Gqq3yX4dCzYTWyoqFCEUBKv bRf6Ab7e4Kugvo4uyu+l0h1RGpCHGFS9egh7Uu2IJH/PTp0TrZl7kKrAA287gBny S2XvCFLiizKkAy9HDzPXmqtLjPvM37iZlkq5I9QppxOw== ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1162529AbeBOPXC (ORCPT ); Thu, 15 Feb 2018 10:23:02 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:50474 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161910AbeBOPXA (ORCPT ); Thu, 15 Feb 2018 10:23:00 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Oliver OHalloran , Michael Ellerman Subject: [PATCH 4.4 014/108] powerpc/powernv: Check device-tree for RFI flush settings Date: Thu, 15 Feb 2018 16:16:11 +0100 Message-Id: <20180215151224.462003315@linuxfoundation.org> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20180215151222.267507937@linuxfoundation.org> References: <20180215151222.267507937@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Oliver O'Halloran commit 6e032b350cd1fdb830f18f8320ef0e13b4e24094 upstream. New device-tree properties are available which tell the hypervisor settings related to the RFI flush. Use them to determine the appropriate flush instruction to use, and whether the flush is required. Signed-off-by: Oliver O'Halloran Signed-off-by: Michael Ellerman Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/powernv/setup.c | 50 +++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) --- a/arch/powerpc/platforms/powernv/setup.c +++ b/arch/powerpc/platforms/powernv/setup.c @@ -35,13 +35,63 @@ #include #include #include +#include +#include #include "powernv.h" +static void pnv_setup_rfi_flush(void) +{ + struct device_node *np, *fw_features; + enum l1d_flush_type type; + int enable; + + /* Default to fallback in case fw-features are not available */ + type = L1D_FLUSH_FALLBACK; + enable = 1; + + np = of_find_node_by_name(NULL, "ibm,opal"); + fw_features = of_get_child_by_name(np, "fw-features"); + of_node_put(np); + + if (fw_features) { + np = of_get_child_by_name(fw_features, "inst-l1d-flush-trig2"); + if (np && of_property_read_bool(np, "enabled")) + type = L1D_FLUSH_MTTRIG; + + of_node_put(np); + + np = of_get_child_by_name(fw_features, "inst-l1d-flush-ori30,30,0"); + if (np && of_property_read_bool(np, "enabled")) + type = L1D_FLUSH_ORI; + + of_node_put(np); + + /* Enable unless firmware says NOT to */ + enable = 2; + np = of_get_child_by_name(fw_features, "needs-l1d-flush-msr-hv-1-to-0"); + if (np && of_property_read_bool(np, "disabled")) + enable--; + + of_node_put(np); + + np = of_get_child_by_name(fw_features, "needs-l1d-flush-msr-pr-0-to-1"); + if (np && of_property_read_bool(np, "disabled")) + enable--; + + of_node_put(np); + of_node_put(fw_features); + } + + setup_rfi_flush(type, enable > 0); +} + static void __init pnv_setup_arch(void) { set_arch_panic_timeout(10, ARCH_PANIC_TIMEOUT); + pnv_setup_rfi_flush(); + /* Initialize SMP */ pnv_smp_init();