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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 41124C07E94 for ; Fri, 4 Jun 2021 09:57:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1F3BA61415 for ; Fri, 4 Jun 2021 09:57:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229916AbhFDJ70 (ORCPT ); Fri, 4 Jun 2021 05:59:26 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:4554 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229612AbhFDJ70 (ORCPT ); Fri, 4 Jun 2021 05:59:26 -0400 Received: from localhost (mailhub3.si.c-s.fr [192.168.12.233]) by localhost (Postfix) with ESMTP id 4FxJ8y5zHqzBCh9; Fri, 4 Jun 2021 11:57:38 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cjOOqixGj5JY; Fri, 4 Jun 2021 11:57:38 +0200 (CEST) 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 4FxJ8y55mYz9ryy; Fri, 4 Jun 2021 11:57:38 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id A914B8B876; Fri, 4 Jun 2021 11:57:37 +0200 (CEST) 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 3dMIB7lb-7uV; Fri, 4 Jun 2021 11:57:37 +0200 (CEST) Received: from po15610vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 266718B86A; Fri, 4 Jun 2021 11:57:37 +0200 (CEST) Received: by po15610vm.idsi0.si.c-s.fr (Postfix, from userid 0) id DEDE264BDD; Fri, 4 Jun 2021 09:57:36 +0000 (UTC) Message-Id: <9fa9ba6807c17f93f35a582c199c646c4a8bfd9c.1622800638.git.christophe.leroy@csgroup.eu> From: Christophe Leroy Subject: [PATCH] powerpc: Remove klimit To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , wangkefeng.wang@huawei.com Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Date: Fri, 4 Jun 2021 09:57:36 +0000 (UTC) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org klimit is a global variable initialised at build time with the value of _end. This variable is never modified, so _end symbol can be used directly. Remove klimit. Signed-off-by: Christophe Leroy Cc: Kefeng Wang --- arch/powerpc/include/asm/setup.h | 1 - arch/powerpc/kernel/head_book3s_32.S | 6 ++---- arch/powerpc/kernel/prom.c | 2 +- arch/powerpc/kernel/setup-common.c | 4 +--- arch/powerpc/platforms/powermac/bootx_init.c | 2 +- 5 files changed, 5 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/include/asm/setup.h b/arch/powerpc/include/asm/setup.h index e89bfebd4e00..6c1a7d217d1a 100644 --- a/arch/powerpc/include/asm/setup.h +++ b/arch/powerpc/include/asm/setup.h @@ -10,7 +10,6 @@ extern void ppc_printk_progress(char *s, unsigned short hex); extern unsigned int rtas_data; extern unsigned long long memory_limit; extern bool init_mem_is_free; -extern unsigned long klimit; extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask); struct device_node; diff --git a/arch/powerpc/kernel/head_book3s_32.S b/arch/powerpc/kernel/head_book3s_32.S index 326262030279..b724e88bcdaf 100644 --- a/arch/powerpc/kernel/head_book3s_32.S +++ b/arch/powerpc/kernel/head_book3s_32.S @@ -766,9 +766,6 @@ PerformanceMonitor: * the kernel image to physical address PHYSICAL_START. */ relocate_kernel: - addis r9,r26,klimit@ha /* fetch klimit */ - lwz r25,klimit@l(r9) - addis r25,r25,-KERNELBASE@h lis r3,PHYSICAL_START@h /* Destination base address */ li r6,0 /* Destination offset */ li r5,0x4000 /* # bytes of memory to copy */ @@ -776,7 +773,8 @@ relocate_kernel: addi r0,r3,4f@l /* jump to the address of 4f */ mtctr r0 /* in copy and do the rest. */ bctr /* jump to the copy */ -4: mr r5,r25 +4: lis r5,_end-KERNELBASE@h + ori r5,r5,_end-KERNELBASE@l bl copy_and_flush /* copy the rest */ b turn_on_mmu diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index fbe9deebc8e1..f620e04dc9bf 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -758,7 +758,7 @@ void __init early_init_devtree(void *params) first_memblock_size = min_t(u64, first_memblock_size, memory_limit); setup_initial_memory_limit(memstart_addr, first_memblock_size); /* Reserve MEMBLOCK regions used by kernel, initrd, dt, etc... */ - memblock_reserve(PHYSICAL_START, __pa(klimit) - PHYSICAL_START); + memblock_reserve(PHYSICAL_START, __pa(_end) - PHYSICAL_START); /* If relocatable, reserve first 32k for interrupt vectors etc. */ if (PHYSICAL_START > MEMORY_START) memblock_reserve(MEMORY_START, 0x8000); diff --git a/arch/powerpc/kernel/setup-common.c b/arch/powerpc/kernel/setup-common.c index 74a98fff2c2f..138bb7f49ef9 100644 --- a/arch/powerpc/kernel/setup-common.c +++ b/arch/powerpc/kernel/setup-common.c @@ -91,8 +91,6 @@ EXPORT_SYMBOL_GPL(boot_cpuid); int dcache_bsize; int icache_bsize; -unsigned long klimit = (unsigned long) _end; - /* * This still seems to be needed... -- paulus */ @@ -930,7 +928,7 @@ void __init setup_arch(char **cmdline_p) init_mm.start_code = (unsigned long)_stext; init_mm.end_code = (unsigned long) _etext; init_mm.end_data = (unsigned long) _edata; - init_mm.brk = klimit; + init_mm.brk = (unsigned long)_end; mm_iommu_init(&init_mm); irqstack_early_init(); diff --git a/arch/powerpc/platforms/powermac/bootx_init.c b/arch/powerpc/platforms/powermac/bootx_init.c index 9d4ecd292255..d20ef35e6d9d 100644 --- a/arch/powerpc/platforms/powermac/bootx_init.c +++ b/arch/powerpc/platforms/powermac/bootx_init.c @@ -433,7 +433,7 @@ static void __init btext_welcome(boot_infos_t *bi) bootx_printf("\nframe buffer at : 0x%x", bi->dispDeviceBase); bootx_printf(" (phys), 0x%x", bi->logicalDisplayBase); bootx_printf(" (log)"); - bootx_printf("\nklimit : 0x%x",(unsigned long)klimit); + bootx_printf("\nklimit : 0x%x",(unsigned long)_end); bootx_printf("\nboot_info at : 0x%x", bi); __asm__ __volatile__ ("mfmsr %0" : "=r" (flags)); bootx_printf("\nMSR : 0x%x", flags); -- 2.25.0