GPUDirect Storage kernel driver (nvidia-fs) ver-2.17.5 commit

removed the use of symbol_get APIs for nvidia_p2p_* APIs.

ChangeLog

@@ -1,3 +1,7 @@
+nvidia-fs (2.17.5) RELEASE; urgency=low
+  * removed the use of symbol_get APIs for nvidia_p2p_* APIs. nvidia-fs is restricted to NVIDIA UNIX Open Kernel Module for x86_64 
+
+-- Aug 2023
 nvidia-fs (2.17.4) RELEASE; urgency=low
   * Added support for Grace-Hopper platform with 4k and 64k Page support
 

src/Makefile

@@ -44,7 +44,7 @@ ccflags-y += -Wall
 ccflags-y += -I$(NVIDIA_SRC_DIR)
 
 ccflags-y += -I/usr/lib/gcc/x86_64-linux-gnu/7/include/
-nvidia-fs-y = nvfs-core.o nvfs-dma.o nvfs-mmap.o nvfs-pci.o nvfs-proc.o nvfs-mod.o nvfs-kernel-interface.o nvfs-p2p.o
+nvidia-fs-y = nvfs-core.o nvfs-dma.o nvfs-mmap.o nvfs-pci.o nvfs-proc.o nvfs-mod.o nvfs-kernel-interface.o
 nvidia-fs-$(CONFIG_NVFS_STATS) += nvfs-stat.o
 nvidia-fs-$(CONFIG_FAULT_INJECTION) += nvfs-fault.o
 GDS_VERSION ?= $(shell cat GDS_VERSION)

src/nvfs-core.c

@@ -1061,17 +1061,9 @@ static int nvfs_open(struct inode *inode, struct file *file)
 	mutex_lock(&nvfs_module_mutex);
 	nvfs_get_ops();
 
-	if(nvfs_nvidia_p2p_init()) {
-		nvfs_err("Could not load nvidia_p2p* symbols\n");
-		nvfs_put_ops();
-		ret = -EOPNOTSUPP;
-		goto out;
-	}
-
 	ret = nvfs_blk_register_dma_ops();
 	if (ret < 0) {
 		nvfs_err("nvfs modules probe failed with error :%d\n", ret);
-		nvfs_nvidia_p2p_exit();
 		nvfs_put_ops();
 		goto out;
 	}
@@ -1089,7 +1081,6 @@ static int nvfs_close(struct inode *inode, struct file *file)
 	nvfs_put_ops();
 	if (nvfs_count_ops() == 0) {
 		nvfs_blk_unregister_dma_ops();
-		nvfs_nvidia_p2p_exit();
 		nvfs_dbg("Unregistering dma ops and nvidia p2p ops\n");
 	}
 	mutex_unlock(&nvfs_module_mutex);

src/nvfs-p2p.h

@@ -25,44 +25,11 @@
 
 #include "nv-p2p.h"
 
-typedef int (*nvidia_p2p_dma_unmap_pages_fptr) (struct pci_dev*,
-		struct nvidia_p2p_page_table*,
-		struct nvidia_p2p_dma_mapping*);
-typedef int (*nvidia_p2p_get_pages_fptr) (uint64_t, uint32_t,
-		uint64_t,
-		uint64_t ,
-		struct nvidia_p2p_page_table **,
-		void (*free_callback)(void *data),
-		void *);
-typedef int (*nvidia_p2p_put_pages_fptr)(uint64_t, uint32_t,
-		uint64_t,
-		struct nvidia_p2p_page_table *);
-typedef int (*nvidia_p2p_dma_map_pages_fptr)(struct pci_dev *,
-		        struct nvidia_p2p_page_table *,
-			struct nvidia_p2p_dma_mapping **);
-typedef int (*nvidia_p2p_free_dma_mapping_fptr)(struct nvidia_p2p_dma_mapping *);
-typedef int (*nvidia_p2p_free_page_table_fptr)(struct nvidia_p2p_page_table *);
-
-
-int nvfs_nvidia_p2p_dma_unmap_pages(struct pci_dev *peer,
-		struct nvidia_p2p_page_table *page_table,
-		struct nvidia_p2p_dma_mapping *dma_mapping);
-int nvfs_nvidia_p2p_get_pages(uint64_t p2p_token, uint32_t va_space,
-		uint64_t virtual_address,
-		uint64_t length,
-		struct nvidia_p2p_page_table **page_table,
-		void (*free_callback)(void *data),
-		void *data);
-int nvfs_nvidia_p2p_put_pages(uint64_t p2p_token, uint32_t va_space,
-		uint64_t virtual_address,
-		struct nvidia_p2p_page_table *page_table);
-int nvfs_nvidia_p2p_dma_map_pages(struct pci_dev *peer,
-		        struct nvidia_p2p_page_table *page_table,
-			        struct nvidia_p2p_dma_mapping **dma_mapping);
-int nvfs_nvidia_p2p_free_dma_mapping(struct nvidia_p2p_dma_mapping *dma_mapping);
-int nvfs_nvidia_p2p_free_page_table(struct nvidia_p2p_page_table *page_table);
-
-int nvfs_nvidia_p2p_init(void);
-void nvfs_nvidia_p2p_exit(void);
+#define nvfs_nvidia_p2p_get_pages  nvidia_p2p_get_pages
+#define nvfs_nvidia_p2p_put_pages nvidia_p2p_put_pages
+#define nvfs_nvidia_p2p_dma_map_pages nvidia_p2p_dma_map_pages
+#define nvfs_nvidia_p2p_dma_unmap_pages nvidia_p2p_dma_unmap_pages
+#define nvfs_nvidia_p2p_free_page_table nvidia_p2p_free_page_table
+#define nvfs_nvidia_p2p_free_dma_mapping nvidia_p2p_free_dma_mapping
 
 #endif

src/nvfs-vers.h

@@ -29,7 +29,7 @@
 #define NVFS_DRIVER_MINOR_VERSION   17 //2-bytes
 
 // template for build version
-#define NVFS_DRIVER_PATCH_VERSION  4
+#define NVFS_DRIVER_PATCH_VERSION  5
 
 static inline unsigned int nvfs_driver_version(void) {
     return (NVFS_DRIVER_MAJOR_VERSION << 16) | NVFS_DRIVER_MINOR_VERSION;