From: Jonathan Neuschäfer Date: Wed, 28 Mar 2018 00:25:44 +0000 (+0200) Subject: powerpc/mm/32: Remove the reserved memory hack X-Git-Tag: v5.15~9084^2~44 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7e1405917c145edbb7d4cd520e890e44161dd7be;p=platform%2Fkernel%2Flinux-starfive.git powerpc/mm/32: Remove the reserved memory hack This hack, introduced in commit c5df7f775148 ("powerpc: allow ioremap within reserved memory regions") is now unnecessary. Signed-off-by: Jonathan Neuschäfer Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index a2bf696..3e59e5d 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -88,11 +88,6 @@ void MMU_init(void); int __map_without_bats; int __map_without_ltlbs; -/* - * This tells the system to allow ioremapping memory marked as reserved. - */ -int __allow_ioremap_reserved; - /* max amount of low RAM to map in */ unsigned long __max_low_memory = MAX_LOW_MEM; diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h index 57fbc55..c4c0a09 100644 --- a/arch/powerpc/mm/mmu_decl.h +++ b/arch/powerpc/mm/mmu_decl.h @@ -98,7 +98,6 @@ extern void setbat(int index, unsigned long virt, phys_addr_t phys, unsigned int size, pgprot_t prot); extern int __map_without_bats; -extern int __allow_ioremap_reserved; extern unsigned int rtas_data, rtas_size; struct hash_pte; diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c index 6668ecc..120a49b 100644 --- a/arch/powerpc/mm/pgtable_32.c +++ b/arch/powerpc/mm/pgtable_32.c @@ -148,8 +148,7 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags, * mem_init() sets high_memory so only do the check after that. */ if (slab_is_available() && (p < virt_to_phys(high_memory)) && - page_is_ram(__phys_to_pfn(p)) && - !(__allow_ioremap_reserved && memblock_is_region_reserved(p, size))) { + page_is_ram(__phys_to_pfn(p))) { printk("__ioremap(): phys addr 0x%llx is RAM lr %ps\n", (unsigned long long)p, __builtin_return_address(0)); return NULL;