From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-4192269-1516208264-2-13172887471612181779 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 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES ensvca, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='com', MailFrom='org' X-Spam-charsets: X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-api-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1516208263; b=aibb6ZULMQBi6OSajp41anSChhPV2EcK9a/Fp9StKEeX09J wmTLhmq1sz7nN5F8xag14at4r6E0qbhL7VnLBzqM3PTIOBA73ufmlRxyjcimyX32 F6Br+pC7HtVziMdPlGSPnO8moVSVuU9XCpGufhWeCpcAaJdJAH4BnfCMnuxYfd1N EcA/DPiy+LJaEziQRSEF8TcapInSV5/PL7DNYw8VrVipi5r0HHYiwsHmfW7AC5G2 YnkTjsfS4rEsNTp4bmse+o2Gycy0OFu3rMNM2eF+zUuqq8AYwn4n5PKBhMigr4vW xIxN6V7FCqJGYpNwCBO9dSwM7VMQ0f/SP/3qn1Q== 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:sender:list-id; s=arctest; t=1516208263; bh=7FJKUhmaQPtH+9YbNAu1/t/kInOxn8I+71YVfqx9gdE=; b=DSrXsRT8CHnQ mFvozqg3yZuWE9AkvcPfgBEegTY4PwlAuVG5xvVCu54ziM6ulVDzg6SCfIjAj89e 0Vr2Rr+Mrrf+vJ8fuauZG7ivscgcpxo6yKRbX0xM8BOIzTSm9RXXI129+Bi1Hgro FnP37pFIrvLB3qziKRLXrpG/1c73riZJO3jucNaWriCxrL1i7sL8xXHd7mUyBUi7 uDZVPno+amWg7q9wArPaNXf5GS7RdEGTkcYBYUuRJs3H/9OxudFuH3As94LtZlSG h/YfWw9QWukCDgrZb+oXVYKJGKSi4mMDlDJiWjb104+oLMHPW5J/57uyn+5zbpqI qrE5fuYbFA== ARC-Authentication-Results: i=1; mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=efficios.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-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=efficios.com header.result=pass header_is_org_domain=yes Authentication-Results: mx2.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=efficios.com; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-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=efficios.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753779AbeAQQ42 (ORCPT ); Wed, 17 Jan 2018 11:56:28 -0500 Received: from mail.efficios.com ([167.114.142.141]:46397 "EHLO mail.efficios.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754204AbeAQQ40 (ORCPT ); Wed, 17 Jan 2018 11:56:26 -0500 From: Mathieu Desnoyers To: Ingo Molnar , Peter Zijlstra , Thomas Gleixner Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org, Andy Lutomirski , "Paul E . McKenney" , Boqun Feng , Andrew Hunter , Maged Michael , Avi Kivity , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Dave Watson , "H . Peter Anvin" , Andrea Parri , Russell King , Greg Hackmann , Will Deacon , David Sehr , Linus Torvalds , x86@kernel.org, Mathieu Desnoyers , linux-arch@vger.kernel.org Subject: [PATCH for 4.16 10/11] membarrier: arm64: Provide core serializing command Date: Wed, 17 Jan 2018 11:54:57 -0500 Message-Id: <20180117165458.13330-11-mathieu.desnoyers@efficios.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180117165458.13330-1-mathieu.desnoyers@efficios.com> References: <20180117165458.13330-1-mathieu.desnoyers@efficios.com> Sender: linux-api-owner@vger.kernel.org X-Mailing-List: linux-api@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Signed-off-by: Mathieu Desnoyers CC: Peter Zijlstra CC: Andy Lutomirski CC: Paul E. McKenney CC: Boqun Feng CC: Andrew Hunter CC: Maged Michael CC: Avi Kivity CC: Benjamin Herrenschmidt CC: Paul Mackerras CC: Michael Ellerman CC: Dave Watson CC: Thomas Gleixner CC: Ingo Molnar CC: "H. Peter Anvin" CC: Andrea Parri CC: Russell King CC: Greg Hackmann CC: Will Deacon CC: David Sehr CC: x86@kernel.org CC: linux-arch@vger.kernel.org --- arch/arm64/Kconfig | 1 + arch/arm64/kernel/entry.S | 4 ++++ 2 files changed, 5 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index c9a7e9e1414f..5b0c06d8dbbe 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -16,6 +16,7 @@ config ARM64 select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA select ARCH_HAS_KCOV + select ARCH_HAS_MEMBARRIER_SYNC_CORE select ARCH_HAS_SET_MEMORY select ARCH_HAS_SG_CHAIN select ARCH_HAS_STRICT_KERNEL_RWX diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index 6d14b8f29b5f..5edde1c2e93e 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -302,6 +302,10 @@ alternative_else_nop_endif ldp x28, x29, [sp, #16 * 14] ldr lr, [sp, #S_LR] add sp, sp, #S_FRAME_SIZE // restore sp + /* + * ARCH_HAS_MEMBARRIER_SYNC_CORE rely on eret context synchronization + * when returning from IPI handler, and when returning to user-space. + */ eret // return to kernel .endm -- 2.11.0