[PATCH v4] Libvtv: Add loongarch support.

[PATCH v4] Libvtv: Add loongarch support.

[Lulu Cheng]

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 16KiB for loongarch64.

v3 -> v4:

Modifying the description.

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


The loongarch64 specification permits page sizes of 4KiB, 16KiB and 64KiB,
but only 16KiB pages are supported for now.

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

include/ChangeLog:

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

libvtv/ChangeLog:

	* configure.tgt: Add loongarch support.
---
 include/vtv-change-permission.h | 4 ++++
 libvtv/configure.tgt            | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/include/vtv-change-permission.h b/include/vtv-change-permission.h
index 70bdad92bca..e7b9294a081 100644
--- a/include/vtv-change-permission.h
+++ b/include/vtv-change-permission.h
@@ -48,6 +48,10 @@ extern void __VLTChangePermission (int);
 #else 
 #if defined(__sun__) && defined(__svr4__) && defined(__sparc__)
 #define VTV_PAGE_SIZE 8192
+#elif defined(__loongarch_lp64)
+/* The page size is configurable by the kernel to be 4, 16 or 64 KiB.
+   For now, only the default page size of 16KiB is supported.  */
+#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

Re:[pushed] [PATCH v4] Libvtv: Add loongarch support.

[Lulu Cheng]

Pushed to r13-3571.

在 2022/10/29 下午2:53, Lulu Cheng 写道:
> 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 16KiB for loongarch64.
>
> v3 -> v4:
>
> Modifying the description.
>
> ---------------------------------------
>
>
> The loongarch64 specification permits page sizes of 4KiB, 16KiB and 64KiB,
> but only 16KiB pages are supported for now.
>
> Co-Authored-By: qijingwen <qijingwen@loongson.cn>
>
> include/ChangeLog:
>
> 	* vtv-change-permission.h (defined):
> 	(VTV_PAGE_SIZE): Set VTV_PAGE_SIZE to 16KiB for loongarch64.
>
> libvtv/ChangeLog:
>
> 	* configure.tgt: Add loongarch support.
> ---
>   include/vtv-change-permission.h | 4 ++++
>   libvtv/configure.tgt            | 3 +++
>   2 files changed, 7 insertions(+)
>
> diff --git a/include/vtv-change-permission.h b/include/vtv-change-permission.h
> index 70bdad92bca..e7b9294a081 100644
> --- a/include/vtv-change-permission.h
> +++ b/include/vtv-change-permission.h
> @@ -48,6 +48,10 @@ extern void __VLTChangePermission (int);
>   #else
>   #if defined(__sun__) && defined(__svr4__) && defined(__sparc__)
>   #define VTV_PAGE_SIZE 8192
> +#elif defined(__loongarch_lp64)
> +/* The page size is configurable by the kernel to be 4, 16 or 64 KiB.
> +   For now, only the default page size of 16KiB is supported.  */
> +#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