From f2bb86937d86ebcb0e52f95b6d19aba1d850e601 Mon Sep 17 00:00:00 2001 From: Christophe Leroy <christophe.leroy@c-s.fr> Date: Thu, 12 Sep 2019 13:49:41 +0000 Subject: [PATCH] powerpc/fixmap: don't clear fixmap area in paging_init() fixmap is intended to map things permanently like the IMMR region on FSL SOC (8xx, 83xx, ...), so don't clear it when initialising paging() Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/41c99bc06394a6bc2888631cb98a3ed2ae281ddb.1568295907.git.christophe.leroy@c-s.fr --- arch/powerpc/mm/mem.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 7573002077a67b..bf0c54b1f161d8 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -237,14 +237,6 @@ void __init paging_init(void) unsigned long long total_ram = memblock_phys_mem_size(); phys_addr_t top_of_ram = memblock_end_of_DRAM(); -#ifdef CONFIG_PPC32 - unsigned long v = __fix_to_virt(__end_of_fixed_addresses - 1); - unsigned long end = __fix_to_virt(FIX_HOLE); - - for (; v < end; v += PAGE_SIZE) - map_kernel_page(v, 0, __pgprot(0)); /* XXX gross */ -#endif - #ifdef CONFIG_HIGHMEM map_kernel_page(PKMAP_BASE, 0, __pgprot(0)); /* XXX gross */ pkmap_page_table = virt_to_kpte(PKMAP_BASE); -- GitLab