After several considerations, I decided to set VTV_PAGE_SIZE to 16KB under 
loongarch64.

v1 - > v2:

1. When the macro __loongarch_lp64 is defined, the VTV_PAGE_SIZE is set to 64K.
2. In the vtv_malloc.cc file __vtv_malloc_init function, it does not check
   whether VTV_PAGE_SIZE is equal to the system page size, if the macro
   __loongarch_lp64 is defined.

v2 -> v3:

Set VTV_PAGE_SIZE to 16KB under loongarch64.



All regression tests of libvtv passed.

                === libvtv Summary ===

# of expected passes            176

-----------------------------------------

The loongarch64 kernel supports 4KB,16KB, or 64KB pages,
but only 16k pages are currently supported in this code.

Co-Authored-By: qijingwen <qijing...@loongson.cn>

include/ChangeLog:

        * vtv-change-permission.h (defined):
        (VTV_PAGE_SIZE): Set VTV_PAGE_SIZE to 16KB under loongarch64.

libvtv/ChangeLog:

        * configure.tgt: Add loongarch support.
---
 include/vtv-change-permission.h | 5 +++++
 libvtv/configure.tgt            | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/include/vtv-change-permission.h b/include/vtv-change-permission.h
index 70bdad92bca..f61d8b68ef6 100644
--- a/include/vtv-change-permission.h
+++ b/include/vtv-change-permission.h
@@ -48,6 +48,11 @@ extern void __VLTChangePermission (int);
 #else 
 #if defined(__sun__) && defined(__svr4__) && defined(__sparc__)
 #define VTV_PAGE_SIZE 8192
+#elif defined(__loongarch_lp64)
+/* The page size can be configured to 4, 16, or 64KB configuring the kernel.
+   However, only 16KB pages are supported here. Please modify this macro if you
+   want to support other page sizes.  */
+#define VTV_PAGE_SIZE 16384
 #else
 #define VTV_PAGE_SIZE 4096
 #endif
diff --git a/libvtv/configure.tgt b/libvtv/configure.tgt
index aa2a3f675b8..6cdd1e97ab1 100644
--- a/libvtv/configure.tgt
+++ b/libvtv/configure.tgt
@@ -50,6 +50,9 @@ case "${target}" in
        ;;
   x86_64-*-darwin[1]* | i?86-*-darwin[1]*)
        ;;
+  loongarch*-*-linux*)
+       VTV_SUPPORTED=yes
+       ;;
   *)
        ;;
 esac
-- 
2.31.1

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