RISC-V: Add modules to virtual kernel memory layout dump

commit f9293ad46d8ba9909187a37b7215324420ad4596 upstream.

Modules always live before the kernel, MODULES_END is fixed but
MODULES_VADDR isn't fixed, it depends on the kernel size.
Let's add it to virtual kernel memory layout dump.

As MODULES is only defined for CONFIG_64BIT, so we dump it when
CONFIG_64BIT=y.

eg,
MODULES_VADDR - MODULES_END
0xffffffff01133000 - 0xffffffff80000000

Reviewed-by: Guo Ren <guoren@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Xianting Tian <xianting.tian@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220811074150.3020189-5-xianting.tian@linux.alibaba.com
Cc: stable@vger.kernel.org
Fixes: 2bfc6cd81bd1 ("riscv: Move kernel mapping outside of linear mapping")
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index c58a7c7..a37a08c 100644 (file)
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -100,6 +100,10 @@ static void __init print_vm_layout(void)
                  (unsigned long)VMEMMAP_END);
        print_mlm("vmalloc", (unsigned long)VMALLOC_START,
                  (unsigned long)VMALLOC_END);
+#ifdef CONFIG_64BIT
+       print_mlm("modules", (unsigned long)MODULES_VADDR,
+                 (unsigned long)MODULES_END);
+#endif
        print_mlm("lowmem", (unsigned long)PAGE_OFFSET,
                  (unsigned long)high_memory);
 #ifdef CONFIG_64BIT