riscv: don't read back satp in paging_init

init_mm.pgd (aka swapped_pgd) gets relocated like all other kernel
symbols by the elf loader, so there is no need to reload it from satp.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index a6c0e8e..c77df81 100644 (file)
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -41,8 +41,6 @@ void setup_zero_page(void)
 
 void __init paging_init(void)
 {
-       init_mm.pgd = (pgd_t *)pfn_to_virt(csr_read(sptbr));
-
        setup_zero_page();
        local_flush_tlb_all();
        zone_sizes_init();