linux-kernel - [PATCH 5.15 058/779] RISC-V: Add modules to virtual kernel memory layout dump

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Date:   Mon, 15 Aug 2022 19:55:02 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Guo Ren <guoren@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Xianting Tian <xianting.tian@...ux.alibaba.com>,
        Palmer Dabbelt <palmer@...osinc.com>
Subject: [PATCH 5.15 058/779] RISC-V: Add modules to virtual kernel memory layout dump

From: Xianting Tian <xianting.tian@...ux.alibaba.com>

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@...nel.org>
Reviewed-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Xianting Tian <xianting.tian@...ux.alibaba.com>
Link: https://lore.kernel.org/r/20220811074150.3020189-5-xianting.tian@linux.alibaba.com
Cc: stable@...r.kernel.org
Fixes: 2bfc6cd81bd1 ("riscv: Move kernel mapping outside of linear mapping")
Signed-off-by: Palmer Dabbelt <palmer@...osinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 arch/riscv/mm/init.c |    4 ++++
 1 file changed, 4 insertions(+)

--- 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