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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 21 Jan 2019 08:04:28 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x0L84RqA62455976 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 21 Jan 2019 08:04:27 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 27EADA405F; Mon, 21 Jan 2019 08:04:27 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 32B5AA4064; Mon, 21 Jan 2019 08:04:22 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.207.125]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Mon, 21 Jan 2019 08:04:22 +0000 (GMT) Received: by rapoport-lnx (sSMTP sendmail emulation); Mon, 21 Jan 2019 10:04:21 +0200 From: Mike Rapoport To: linux-mm@kvack.org Subject: [PATCH v2 02/21] powerpc: use memblock functions returning virtual address Date: Mon, 21 Jan 2019 10:03:49 +0200 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1548057848-15136-1-git-send-email-rppt@linux.ibm.com> References: <1548057848-15136-1-git-send-email-rppt@linux.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 19012108-4275-0000-0000-00000301E9E7 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19012108-4276-0000-0000-0000381015BB Message-Id: <1548057848-15136-3-git-send-email-rppt@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-01-21_04:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901210066 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190121_000446_564953_5E8851BA X-CRM114-Status: GOOD ( 24.39 ) X-Spam-Score: 1.3 (+) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (1.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [148.163.156.1 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 2.0 KHOP_DYNAMIC Relay looks like a dynamic address X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rich Felker , linux-ia64@vger.kernel.org, devicetree@vger.kernel.org, Catalin Marinas , Heiko Carstens , x86@kernel.org, linux-mips@vger.kernel.org, Max Filippov , Guo Ren , sparclinux@vger.kernel.org, Christoph Hellwig , linux-s390@vger.kernel.org, linux-c6x-dev@linux-c6x.org, Yoshinori Sato , Richard Weinberger , linux-sh@vger.kernel.org, Russell King , kasan-dev@googlegroups.com, Mike Rapoport , Geert Uytterhoeven , Mark Salter , Dennis Zhou , Matt Turner , linux-snps-arc@lists.infradead.org, uclinux-h8-devel@lists.sourceforge.jp, Petr Mladek , linux-xtensa@linux-xtensa.org, linux-alpha@vger.kernel.org, linux-um@lists.infradead.org, linux-m68k@lists.linux-m68k.org, Rob Herring , Greentime Hu , xen-devel@lists.xenproject.org, Stafford Horne , Guan Xuetao , linux-arm-kernel@lists.infradead.org, Christophe Leroy , Michal Simek , Tony Luck , Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Paul Burton , Vineet Gupta , Michael Ellerman , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , openrisc@lists.librecores.org MIME-Version: 1.0 Sender: "linux-um" Errors-To: linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org From: Christophe Leroy 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. [ MR: - updated error message in alloc_stack() to be more verbose - convereted several additional call sites ] Signed-off-by: Christophe Leroy Signed-off-by: Mike Rapoport Acked-by: Michael Ellerman --- arch/powerpc/kernel/dt_cpu_ftrs.c | 3 +-- arch/powerpc/kernel/irq.c | 5 ----- arch/powerpc/kernel/paca.c | 6 +++++- arch/powerpc/kernel/prom.c | 5 ++++- arch/powerpc/kernel/setup_32.c | 26 ++++++++++++++++---------- 5 files changed, 26 insertions(+), 19 deletions(-) diff --git a/arch/powerpc/kernel/dt_cpu_ftrs.c b/arch/powerpc/kernel/dt_cpu_ftrs.c index 8be3721..2554824 100644 --- a/arch/powerpc/kernel/dt_cpu_ftrs.c +++ b/arch/powerpc/kernel/dt_cpu_ftrs.c @@ -813,7 +813,6 @@ static int __init process_cpufeatures_node(unsigned long node, int len; f = &dt_cpu_features[i]; - memset(f, 0, sizeof(struct dt_cpu_feature)); f->node = node; @@ -1008,7 +1007,7 @@ static int __init dt_cpu_ftrs_scan_callback(unsigned long node, const char /* Count and allocate space for cpu features */ of_scan_flat_dt_subnodes(node, count_cpufeatures_subnodes, &nr_dt_cpu_features); - dt_cpu_features = __va(memblock_phys_alloc(sizeof(struct dt_cpu_feature) * nr_dt_cpu_features, PAGE_SIZE)); + dt_cpu_features = memblock_alloc(sizeof(struct dt_cpu_feature) * nr_dt_cpu_features, PAGE_SIZE); cpufeatures_setup_start(isa); diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c index 916ddc4..4a44bc3 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/paca.c b/arch/powerpc/kernel/paca.c index 8c890c6..e7382ab 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -196,7 +196,11 @@ void __init allocate_paca_ptrs(void) paca_nr_cpu_ids = nr_cpu_ids; paca_ptrs_size = sizeof(struct paca_struct *) * nr_cpu_ids; - paca_ptrs = __va(memblock_phys_alloc(paca_ptrs_size, SMP_CACHE_BYTES)); + paca_ptrs = memblock_alloc_raw(paca_ptrs_size, SMP_CACHE_BYTES); + if (!paca_ptrs) + panic("Failed to allocate %d bytes for paca pointers\n", + paca_ptrs_size); + memset(paca_ptrs, 0x88, paca_ptrs_size); } diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index e97aaf2..c0ed4fa 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -127,7 +127,10 @@ static void __init move_device_tree(void) if ((memory_limit && (start + size) > PHYSICAL_START + memory_limit) || !memblock_is_memory(start + size - 1) || overlaps_crashkernel(start, size) || overlaps_initrd(start, size)) { - p = __va(memblock_phys_alloc(size, PAGE_SIZE)); + p = memblock_alloc_raw(size, PAGE_SIZE); + if (!p) + panic("Failed to allocate %lu bytes to move device tree\n", + size); memcpy(p, initial_boot_params, size); initial_boot_params = p; DBG("Moved device tree to 0x%px\n", p); diff --git a/arch/powerpc/kernel/setup_32.c b/arch/powerpc/kernel/setup_32.c index 947f904..1f0b762 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 } }