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=-13.6 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,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 1A40CC11F65 for ; Wed, 30 Jun 2021 07:50:47 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 9752161C81 for ; Wed, 30 Jun 2021 07:50:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9752161C81 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4GFD6Y2CC4z3dkm for ; Wed, 30 Jun 2021 17:50:45 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=bSYQHH1O; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::536; helo=mail-pg1-x536.google.com; envelope-from=npiggin@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=bSYQHH1O; dkim-atps=neutral Received: from mail-pg1-x536.google.com (mail-pg1-x536.google.com [IPv6:2607:f8b0:4864:20::536]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4GFD222QxYz304T for ; Wed, 30 Jun 2021 17:46:50 +1000 (AEST) Received: by mail-pg1-x536.google.com with SMTP id o18so798731pgu.10 for ; Wed, 30 Jun 2021 00:46:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=QYaZltRaZgDkjpeVbKd7iwfeInjmMRYrUqsZXqNkK9w=; b=bSYQHH1O7Pn8h43ub4lo+Hu5egt7clZOxAvMgfj942ym/HzbBPsPJXmtafuk20oq2u dp1ZU8FqnAIYEpLbCUxI7i1MgcvPrg8Lulhs0ohZ4PVFZra+lBZgNuqCSebSO9lU0tu3 JUkZp8dXdr8ShCJgGIVautGYojryLliNxjevTxnQUWsP/v6FZpGhqcM/fbNmy14GmFY5 ShDe0e+4aC4IGAFk8L1tx4syjD5E54C8GgTyk4KMRpSg9slE2ZTusxJIPSxYMFRVOTpv f5y1C92ZSUWxu6zIuEWwHGID4959sbMXePuwWJiyz0DW10mV/MeRX6+uc77qxS0Tg52C ALRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=QYaZltRaZgDkjpeVbKd7iwfeInjmMRYrUqsZXqNkK9w=; b=mUPGmWoAjx8Zyj+MNrNJaOYsV2UelAO7W3MJjN8LUT0KeTIQznog917ffzFSe26yKA Srr2iPkZCzgLN89QbFpTqzuM/fLYzzBOpvpUnSU6pxbIKoW+aK5Qvo4nvw0vPDp16poE i75ZnyXAI8fb+EJHioEmzwm/nkKo0ASg2nCcSEAMLFbokD2bIWHnmPC38R6L13j/tSEm 977wItpw/Sf83/+0dWwRl+icSLlqybLQCE208T7KJkAAHtA9OQlEm4uhjB0YcBXvpcpq K9RytqjyPN4+Dq9r4V9S42HiT44/6jRp4TKKZY2MOMZb16BNZr7gd7onQz7FFTQQo/PB k8ug== X-Gm-Message-State: AOAM531l8K5UIURUz1hePadbpiGyLeZabyFipj9nE+lxmIvmRm//3N6T +DKGgpbbeiwq+A10vMHFc2yUi+MucBE= X-Google-Smtp-Source: ABdhPJwLr/VAcjp0FDkfXvy+cwuHCt3lYOctId4yQGwjUJoVYvhl0KtfV71yCRTjXWpv2OXttRfdMQ== X-Received: by 2002:a63:4d58:: with SMTP id n24mr23115652pgl.183.1625039208234; Wed, 30 Jun 2021 00:46:48 -0700 (PDT) Received: from bobo.ibm.com (220-244-87-52.tpgi.com.au. [220.244.87.52]) by smtp.gmail.com with ESMTPSA id g4sm20503369pfu.134.2021.06.30.00.46.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 30 Jun 2021 00:46:48 -0700 (PDT) From: Nicholas Piggin To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v3 9/9] powerpc/64s: move ret_from_fork etc above __end_soft_masked Date: Wed, 30 Jun 2021 17:46:21 +1000 Message-Id: <20210630074621.2109197-10-npiggin@gmail.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20210630074621.2109197-1-npiggin@gmail.com> References: <20210630074621.2109197-1-npiggin@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: Sachin Sant , Nicholas Piggin Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Code which runs with interrupts enabled should be moved above __end_soft_masked where possible, because maskable interrupts that hit below that symbol will need to consult the soft mask table, which is an extra cost. Signed-off-by: Nicholas Piggin --- arch/powerpc/kernel/interrupt_64.S | 52 +++++++++++++++--------------- 1 file changed, 26 insertions(+), 26 deletions(-) diff --git a/arch/powerpc/kernel/interrupt_64.S b/arch/powerpc/kernel/interrupt_64.S index c4336e2e2ce8..4063e8a3f704 100644 --- a/arch/powerpc/kernel/interrupt_64.S +++ b/arch/powerpc/kernel/interrupt_64.S @@ -449,32 +449,6 @@ _ASM_NOKPROBE_SYMBOL(tabort_syscall) b . /* prevent speculative execution */ #endif -#ifdef CONFIG_PPC_BOOK3S -_GLOBAL(ret_from_fork_scv) - bl schedule_tail - REST_NVGPRS(r1) - li r3,0 /* fork() return value */ - b .Lsyscall_vectored_common_exit -#endif - -_GLOBAL(ret_from_fork) - bl schedule_tail - REST_NVGPRS(r1) - li r3,0 /* fork() return value */ - b .Lsyscall_exit - -_GLOBAL(ret_from_kernel_thread) - bl schedule_tail - REST_NVGPRS(r1) - mtctr r14 - mr r3,r15 -#ifdef PPC64_ELF_ABI_v2 - mr r12,r14 -#endif - bctrl - li r3,0 - b .Lsyscall_exit - /* * If MSR EE/RI was never enabled, IRQs not reconciled, NVGPRs not * touched, no exit work created, then this can be used. @@ -768,3 +742,29 @@ interrupt_return_macro hsrr __end_soft_masked: DEFINE_FIXED_SYMBOL(__end_soft_masked) #endif /* CONFIG_PPC_BOOK3S */ + +#ifdef CONFIG_PPC_BOOK3S +_GLOBAL(ret_from_fork_scv) + bl schedule_tail + REST_NVGPRS(r1) + li r3,0 /* fork() return value */ + b .Lsyscall_vectored_common_exit +#endif + +_GLOBAL(ret_from_fork) + bl schedule_tail + REST_NVGPRS(r1) + li r3,0 /* fork() return value */ + b .Lsyscall_exit + +_GLOBAL(ret_from_kernel_thread) + bl schedule_tail + REST_NVGPRS(r1) + mtctr r14 + mr r3,r15 +#ifdef PPC64_ELF_ABI_v2 + mr r12,r14 +#endif + bctrl + li r3,0 + b .Lsyscall_exit -- 2.23.0