diff --git a/bootloader/rustsbi-k210.bin b/bootloader/rustsbi-k210.bin
index 158bfa4c..c53ed1fc 100755
Binary files a/bootloader/rustsbi-k210.bin and b/bootloader/rustsbi-k210.bin differ
diff --git a/bootloader/rustsbi-qemu.bin b/bootloader/rustsbi-qemu.bin
index 76e0e59e..ddbf336a 100755
Binary files a/bootloader/rustsbi-qemu.bin and b/bootloader/rustsbi-qemu.bin differ
diff --git a/os/Cargo.toml b/os/Cargo.toml
index c98e71ef..cc93ff4e 100644
--- a/os/Cargo.toml
+++ b/os/Cargo.toml
@@ -14,3 +14,6 @@ cfg-if = { version = "1.0.0" }
 [features]
 board_qemu = []
 board_k210 = []
+
+[profile.release]
+debug = true
diff --git a/os/Makefile b/os/Makefile
index f3e40c1a..6da9228f 100644
--- a/os/Makefile
+++ b/os/Makefile
@@ -1,6 +1,6 @@
 # Building
 TARGET := riscv64gc-unknown-none-elf
-MODE := debug
+MODE := release
 KERNEL_ELF := target/$(TARGET)/$(MODE)/os
 KERNEL_BIN := $(KERNEL_ELF).bin
 DISASM_TMP := target/$(TARGET)/$(MODE)/asm
@@ -103,4 +103,4 @@ gdbserver: build
 gdbclient:
 	@riscv64-unknown-elf-gdb -ex 'file $(KERNEL_ELF)' -ex 'set arch riscv:rv64' -ex 'target remote localhost:1234'
 
-.PHONY: build env kernel clean disasm disasm-vim run-inner switch-check gdbserver
+.PHONY: build env kernel clean disasm disasm-vim run-inner switch-check gdbserver gdbclient
diff --git a/user/Cargo.toml b/user/Cargo.toml
index 817ca525..d843673c 100644
--- a/user/Cargo.toml
+++ b/user/Cargo.toml
@@ -7,3 +7,6 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+
+[profile.release]
+debug = true