diff --git a/crate/riscv b/crate/riscv
index 03033e9..82562ff 160000
--- a/crate/riscv
+++ b/crate/riscv
@@ -1 +1 @@
-Subproject commit 03033e9570079f85476280de4e155ef21d6c9e8b
+Subproject commit 82562ff04c4f269f6bf23eee363fb4e2b8536b8f
diff --git a/kernel/Makefile b/kernel/Makefile
index fb96ca9..2ca538a 100644
--- a/kernel/Makefile
+++ b/kernel/Makefile
@@ -181,7 +181,7 @@ ifeq ($(arch), riscv32)
 		$(shell rustc --print sysroot)/lib/rustlib/src/rust/src/libcore/sync/atomic.rs \
 		src/arch/riscv32/atomic.patch
 endif
-	@CC=$(cc) LOG=trace cargo xbuild $(build_args)
+	@CC=$(cc) cargo xbuild $(build_args)
 endif
 
 
diff --git a/kernel/run-qemu-script-custom-llc b/kernel/run-qemu-script-custom-llc
index 9097784..753a8b3 100755
--- a/kernel/run-qemu-script-custom-llc
+++ b/kernel/run-qemu-script-custom-llc
@@ -17,19 +17,19 @@ then
   exit 1
 fi
 
-if ! [[ ${RV32} = 1 ]]; then
+if [[ ${RV32} = 1 ]]; then
+	TARGET_ARCH=riscv32
+	COMPILER_RT_CFLAGS="-march=rv32ia -mabi=ilp32 -O3"
+	SFSIMG_CFLAGS="-march=rv32ia -mabi=ilp32"
+	RISCV_PK_CONFIGURE_FLAGS="--with-arch=rv32imac --disable-fp-emulation --host=riscv32-unknown-elf"
+	UCORE_USER_IMAGE="../user/img/ucore-rv32.img"
+else
 	TARGET_ARCH=riscv64
 	export LOG=trace
 	COMPILER_RT_CFLAGS="-march=rv64ia -mabi=lp64 -O3"
 	SFSIMG_CFLAGS="-march=rv64ia -mabi=lp64"
 	RISCV_PK_CONFIGURE_FLAGS="--with-arch=rv64imac --disable-fp-emulation --host=riscv64-unknown-elf"
 	UCORE_USER_IMAGE="../user/img/ucore-riscv64.img"
-else
-	TARGET_ARCH=riscv32
-	COMPILER_RT_CFLAGS="-march=rv32ia -mabi=ilp32 -O3"
-	SFSIMG_CFLAGS="-march=rv32ia -mabi=ilp32"
-	RISCV_PK_CONFIGURE_FLAGS="--with-arch=rv32imac --disable-fp-emulation --host=riscv32-unknown-elf"
-	UCORE_USER_IMAGE="../user/img/ucore-rv32.img"
 fi
 LLC=llc
 RUST_SRC_PATH=$(rustc --print sysroot)/lib/rustlib/src/rust/src
diff --git a/kernel/src/arch/riscv32/consts.rs b/kernel/src/arch/riscv32/consts.rs
index 4bc47ea..99396c3 100644
--- a/kernel/src/arch/riscv32/consts.rs
+++ b/kernel/src/arch/riscv32/consts.rs
@@ -12,8 +12,12 @@ pub const RECURSIVE_INDEX: usize = 0x1fd;
 //  root_table[0776] points to root_table itself as leaf page
 
 #[cfg(target_arch = "riscv32")]
-pub const KERNEL_P2_INDEX: usize = 0x8000_0000 >> 22;
+pub const KERN_VA_BASE: usize = 0;
+#[cfg(target_arch = "riscv64")]
+pub const KERN_VA_BASE: usize = 0xFFFF_FFFF_0000_0000;
 
+#[cfg(target_arch = "riscv32")]
+pub const KERNEL_P2_INDEX: usize = 0x8000_0000 >> 22;
 #[cfg(feature = "board_k210")]
 pub const KERNEL_HEAP_SIZE: usize = 0x0010_0000;
 #[cfg(not(feature = "board_k210"))]
diff --git a/kernel/src/arch/riscv32/memory.rs b/kernel/src/arch/riscv32/memory.rs
index e31a24c..867f011 100644
--- a/kernel/src/arch/riscv32/memory.rs
+++ b/kernel/src/arch/riscv32/memory.rs
@@ -3,7 +3,7 @@ use riscv::{addr::*, register::sstatus};
 use ucore_memory::PAGE_SIZE;
 use log::*;
 use crate::memory::{active_table, FRAME_ALLOCATOR, init_heap, MemoryArea, MemoryAttr, MemorySet, MEMORY_ALLOCATOR};
-use crate::consts::{MEMORY_OFFSET, MEMORY_END};
+use crate::consts::{MEMORY_OFFSET, MEMORY_END, KERN_VA_BASE};
 use riscv::register::satp;
 
 #[cfg(feature = "no_mmu")]
@@ -48,7 +48,7 @@ fn init_frame_allocator() {
 
     // TODO: delete debug code
     let mut ba = FRAME_ALLOCATOR.lock();
-    let range = to_range((end as usize) - 0xFFFF_FFFF_0000_0000 + PAGE_SIZE, MEMORY_END);
+    let range = to_range((end as usize) - KERN_VA_BASE + PAGE_SIZE, MEMORY_END);
     info!("FrameAllocator insert {} .. {}", range.start, range.end);
     ba.insert(range);
     info!("FrameAllocator init end");
diff --git a/riscv-pk b/riscv-pk
index 11fe816..f4ec45a 160000
--- a/riscv-pk
+++ b/riscv-pk
@@ -1 +1 @@
-Subproject commit 11fe816ca3b7745268e9322c51cd115d6059654e
+Subproject commit f4ec45a908005331149af5816247dcb89fbd4654