提交 f2bb8693 编写于 作者: C Christophe Leroy 提交者: Michael Ellerman

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: NChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/41c99bc06394a6bc2888631cb98a3ed2ae281ddb.1568295907.git.christophe.leroy@c-s.fr
上级 bf9c95e2
...@@ -237,14 +237,6 @@ void __init paging_init(void) ...@@ -237,14 +237,6 @@ void __init paging_init(void)
unsigned long long total_ram = memblock_phys_mem_size(); unsigned long long total_ram = memblock_phys_mem_size();
phys_addr_t top_of_ram = memblock_end_of_DRAM(); 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 #ifdef CONFIG_HIGHMEM
map_kernel_page(PKMAP_BASE, 0, __pgprot(0)); /* XXX gross */ map_kernel_page(PKMAP_BASE, 0, __pgprot(0)); /* XXX gross */
pkmap_page_table = virt_to_kpte(PKMAP_BASE); pkmap_page_table = virt_to_kpte(PKMAP_BASE);
......
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