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=-6.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED 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 DBD78C282C7 for ; Thu, 31 Jan 2019 10:11:54 +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 0F3BD20B1F for ; Thu, 31 Jan 2019 10:11:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="GKdWvunu" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0F3BD20B1F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=c-s.fr 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 43qwxz42ZzzDqSv for ; Thu, 31 Jan 2019 21:11:51 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=c-s.fr (client-ip=93.17.236.30; helo=pegase1.c-s.fr; envelope-from=christophe.leroy@c-s.fr; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=c-s.fr header.i=@c-s.fr header.b="GKdWvunu"; dkim-atps=neutral Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (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 43qwtS3mhVzDqQ3 for ; Thu, 31 Jan 2019 21:08:48 +1100 (AEDT) Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 43qwtN1rwCz9tyxC; Thu, 31 Jan 2019 11:08:44 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=GKdWvunu; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id F1nUlcsWzmyM; Thu, 31 Jan 2019 11:08:44 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 43qwtN0npFz9tyx9; Thu, 31 Jan 2019 11:08:44 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1548929324; bh=JyArn9ovGYYICE5HdUVE4XQ2hlQLfgffs4ttLpyQrP4=; h=In-Reply-To:References:From:Subject:To:Cc:Date:From; b=GKdWvunu8Inbiyi6nHvll7xcEt3YpczszfDe2WmIb37eMjakI56XhAukLl7BGkA3x ViDyRkULydz746kWSf7j4D2BDAzW4B8/vIjN9lYd4dduopoiLstW/IJocf1jYri9aa 2q43WbG4WlnzfK4amvSYtLLNpTKW3vEXfYyG0iLw= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 3EF2E8B814; Thu, 31 Jan 2019 11:08:45 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id 2QKi2J4PYWlb; Thu, 31 Jan 2019 11:08:45 +0100 (CET) Received: from po16846vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id DE9978B78D; Thu, 31 Jan 2019 11:08:44 +0100 (CET) Received: by po16846vm.idsi0.si.c-s.fr (Postfix, from userid 0) id 85AA872E14; Thu, 31 Jan 2019 10:08:44 +0000 (UTC) Message-Id: In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v15 01/13] powerpc/irq: use memblock functions returning virtual address To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Nicholas Piggin Date: Thu, 31 Jan 2019 10:08:44 +0000 (UTC) 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: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" Since only the virtual address of allocated blocks is used, lets use functions returning directly virtual address. Those functions have the advantage of also zeroing the block. Suggested-by: Mike Rapoport Acked-by: Mike Rapoport Signed-off-by: Christophe Leroy --- arch/powerpc/kernel/irq.c | 5 ----- arch/powerpc/kernel/setup_32.c | 26 ++++++++++++++++---------- arch/powerpc/kernel/setup_64.c | 19 +++++++------------ 3 files changed, 23 insertions(+), 27 deletions(-) diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index bb299613a462..4a5dd8800946 100644 --- a/arch/powerpc/kernel/irq.c +++ b/arch/powerpc/kernel/irq.c @@ -725,18 +725,15 @@ void exc_lvl_ctx_init(void) #endif #endif - memset((void *)critirq_ctx[cpu_nr], 0, THREAD_SIZE); tp = critirq_ctx[cpu_nr]; tp->cpu = cpu_nr; tp->preempt_count = 0; #ifdef CONFIG_BOOKE - memset((void *)dbgirq_ctx[cpu_nr], 0, THREAD_SIZE); tp = dbgirq_ctx[cpu_nr]; tp->cpu = cpu_nr; tp->preempt_count = 0; - memset((void *)mcheckirq_ctx[cpu_nr], 0, THREAD_SIZE); tp = mcheckirq_ctx[cpu_nr]; tp->cpu = cpu_nr; tp->preempt_count = HARDIRQ_OFFSET; @@ -754,12 +751,10 @@ void irq_ctx_init(void) int i; for_each_possible_cpu(i) { - memset((void *)softirq_ctx[i], 0, THREAD_SIZE); tp = softirq_ctx[i]; tp->cpu = i; klp_init_thread_info(tp); - memset((void *)hardirq_ctx[i], 0, THREAD_SIZE); tp = hardirq_ctx[i]; tp->cpu = i; klp_init_thread_info(tp); diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 947f904688b0..1f0b7629c1a6 100644 --- a/arch/powerpc/kernel/setup_32.c +++ b/arch/powerpc/kernel/setup_32.c @@ -196,6 +196,17 @@ static int __init ppc_init(void) } arch_initcall(ppc_init); +static void *__init alloc_stack(void) +{ + void *ptr = memblock_alloc(THREAD_SIZE, THREAD_SIZE); + + if (!ptr) + panic("cannot allocate %d bytes for stack at %pS\n", + THREAD_SIZE, (void *)_RET_IP_); + + return ptr; +} + void __init irqstack_early_init(void) { unsigned int i; @@ -203,10 +214,8 @@ void __init irqstack_early_init(void) /* interrupt stacks must be in lowmem, we get that for free on ppc32 * as the memblock is limited to lowmem by default */ for_each_possible_cpu(i) { - softirq_ctx[i] = (struct thread_info *) - __va(memblock_phys_alloc(THREAD_SIZE, THREAD_SIZE)); - hardirq_ctx[i] = (struct thread_info *) - __va(memblock_phys_alloc(THREAD_SIZE, THREAD_SIZE)); + softirq_ctx[i] = alloc_stack(); + hardirq_ctx[i] = alloc_stack(); } } @@ -224,13 +233,10 @@ void __init exc_lvl_early_init(void) hw_cpu = 0; #endif - critirq_ctx[hw_cpu] = (struct thread_info *) - __va(memblock_phys_alloc(THREAD_SIZE, THREAD_SIZE)); + critirq_ctx[hw_cpu] = alloc_stack(); #ifdef CONFIG_BOOKE - dbgirq_ctx[hw_cpu] = (struct thread_info *) - __va(memblock_phys_alloc(THREAD_SIZE, THREAD_SIZE)); - mcheckirq_ctx[hw_cpu] = (struct thread_info *) - __va(memblock_phys_alloc(THREAD_SIZE, THREAD_SIZE)); + dbgirq_ctx[hw_cpu] = alloc_stack(); + mcheckirq_ctx[hw_cpu] = alloc_stack(); #endif } } diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 236c1151a3a7..080dd515d587 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -634,19 +634,17 @@ __init u64 ppc64_bolted_size(void) static void *__init alloc_stack(unsigned long limit, int cpu) { - unsigned long pa; + void *ptr; BUILD_BUG_ON(STACK_INT_FRAME_SIZE % 16); - pa = memblock_alloc_base_nid(THREAD_SIZE, THREAD_SIZE, limit, - early_cpu_to_node(cpu), MEMBLOCK_NONE); - if (!pa) { - pa = memblock_alloc_base(THREAD_SIZE, THREAD_SIZE, limit); - if (!pa) - panic("cannot allocate stacks"); - } + ptr = memblock_alloc_try_nid(THREAD_SIZE, THREAD_SIZE, + MEMBLOCK_LOW_LIMIT, limit, + early_cpu_to_node(cpu)); + if (!ptr) + panic("cannot allocate stacks"); - return __va(pa); + return ptr; } void __init irqstack_early_init(void) @@ -739,20 +737,17 @@ void __init emergency_stack_init(void) struct thread_info *ti; ti = alloc_stack(limit, i); - memset(ti, 0, THREAD_SIZE); emerg_stack_init_thread_info(ti, i); paca_ptrs[i]->emergency_sp = (void *)ti + THREAD_SIZE; #ifdef CONFIG_PPC_BOOK3S_64 /* emergency stack for NMI exception handling. */ ti = alloc_stack(limit, i); - memset(ti, 0, THREAD_SIZE); emerg_stack_init_thread_info(ti, i); paca_ptrs[i]->nmi_emergency_sp = (void *)ti + THREAD_SIZE; /* emergency stack for machine check exception handling. */ ti = alloc_stack(limit, i); - memset(ti, 0, THREAD_SIZE); emerg_stack_init_thread_info(ti, i); paca_ptrs[i]->mc_emergency_sp = (void *)ti + THREAD_SIZE; #endif -- 2.13.3