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Date: Mon, 17 Feb 2020 16:32:19 +0800 From: Zong Li <zong.li@...ive.com> To: paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu, linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org Cc: Zong Li <zong.li@...ive.com> Subject: [PATCH 4/8] riscv: move exception table immediately after RO_DATA Move EXCEPTION_TABLE immediately after RO_DATA. Make it easy to set the attribution of the sections which should be read-only at a time. Move .sdata to indicate the start of data section with write permission. This patch is prepared for STRICT_KERNEL_RWX support. Signed-off-by: Zong Li <zong.li@...ive.com> --- arch/riscv/kernel/vmlinux.lds.S | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S index 1e0193ded420..4ba8a5397e8b 100644 --- a/arch/riscv/kernel/vmlinux.lds.S +++ b/arch/riscv/kernel/vmlinux.lds.S @@ -9,6 +9,7 @@ #include <asm/page.h> #include <asm/cache.h> #include <asm/thread_info.h> +#include <asm/set_memory.h> OUTPUT_ARCH(riscv) ENTRY(_start) @@ -52,12 +53,15 @@ SECTIONS } /* Start of data section */ - _sdata = .; RO_DATA(L1_CACHE_BYTES) .srodata : { *(.srodata*) } + EXCEPTION_TABLE(0x10) + + _sdata = .; + RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE) .sdata : { __global_pointer$ = . + 0x800; @@ -69,8 +73,6 @@ SECTIONS BSS_SECTION(PAGE_SIZE, PAGE_SIZE, 0) - EXCEPTION_TABLE(0x10) - .rel.dyn : { *(.rel.dyn*) } -- 2.25.0
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