diff --git a/address_space/src/address_space.rs b/address_space/src/address_space.rs
index e87ccfa59423732de2837dded81d1c00bd61dd88..135923db79a51f8ae212bd2a891cd2376c3c10b5 100644
--- a/address_space/src/address_space.rs
+++ b/address_space/src/address_space.rs
@@ -313,11 +313,11 @@ impl AddressSpace {
         )
     }
 
-    /// Write memory segment to `dst`.
+    /// Write data to specified memory address.
     ///
     /// # Arguments
     ///
-    /// * `dst` - Destination the data would be written to.
+    /// * `src` - Data buffer to write.
     /// * `addr` - Start address.
     /// * `count` - Size of data.
     ///
diff --git a/boot_loader/src/x86_64/mod.rs b/boot_loader/src/x86_64/mod.rs
index a4bcb3f1f32069df597c36d82d362df34be73864..095d7bd2df8f0aefae0e2cab1730dc82d97ed0c2 100644
--- a/boot_loader/src/x86_64/mod.rs
+++ b/boot_loader/src/x86_64/mod.rs
@@ -100,8 +100,8 @@ const EBDA_START: u64 = 0x0009_fc00;
 const VGA_RAM_BEGIN: u64 = 0x000a_0000;
 const MB_BIOS_BEGIN: u64 = 0x000f_0000;
 const VMLINUX_RAM_START: u64 = 0x0010_0000;
-const KVM_32BIT_GAP_SIZE: u64 = 0x0300 << 20; /* 3GB */
-const KVM_32BIT_MAX_MEM_SIZE: u64 = 1 << 32; /* 4GB */
+const KVM_32BIT_GAP_SIZE: u64 = 0x0300 << 20;   /* 768MB */
+const KVM_32BIT_MAX_MEM_SIZE: u64 = 1 << 32;    /* 4GB */
 const KVM_32BIT_GAP_START: u64 = KVM_32BIT_MAX_MEM_SIZE - KVM_32BIT_GAP_SIZE;
 const INITRD_ADDR_MAX: u64 = 0x37ff_ffff;