Huacai Chen dce5ea1d0f LoongArch: Mark 3 symbol exports as non-GPL ... vm_map_base, empty_zero_page and invalid_pmd_table could be accessed widely by some out-of-tree non-GPL but important file systems or drivers (e.g. OpenZFS). Let's use EXPORT_SYMBOL() instead of EXPORT_SYMBOL_GPL() to export them, so as to avoid build errors. 1, Details about vm_map_base: This is a LoongArch-specific symbol and may be referenced through macros PCI_IOBASE, VMALLOC_START and VMALLOC_END. 2, Details about empty_zero_page: As it stands today, only 3 architectures export empty_zero_page as a GPL symbol: IA64, LoongArch and MIPS. LoongArch gets the GPL export by inheriting from MIPS, and the MIPS export was first introduced in commit 497d2adcbf ("[MIPS] Export empty_zero_page for sake of the ext4 module."). The IA64 export was similar: commit a7d57ecf42 ("[IA64] Export three symbols for module use") did so for kvm. In both IA64 and MIPS, the export of empty_zero_page was done for satisfying some in-kernel component built as module (kvm and ext4 respectively), and given its reasonably low-level nature, GPL is a reasonable choice. But looking at the bigger picture it is evident most other architectures do not regard it as GPL, so in effect the symbol probably should not be treated as such, in favor of consistency. 3, Details about invalid_pmd_table: Keep consistency with invalid_pte_table and make it be possible by some modules. Cc: stable@vger.kernel.org Reviewed-by: WANG Xuerui <git@xen0n.name> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>		2023-04-18 19:38:58 +08:00
..
cache.c	LoongArch: Refactor cache probe and flush methods	2022-10-12 16:36:14 +08:00
extable.c	LoongArch: BPF: Add BPF exception tables	2022-12-14 08:36:11 +08:00
fault.c	LoongArch: Add kprobes support	2023-02-25 22:12:17 +08:00
hugetlbpage.c	LoongArch: Add memory management	2022-06-03 20:09:28 +08:00
init.c	LoongArch: Mark 3 symbol exports as non-GPL	2023-04-18 19:38:58 +08:00
ioremap.c	LoongArch: Add memory management	2022-06-03 20:09:28 +08:00
maccess.c	LoongArch: Add memory management	2022-06-03 20:09:28 +08:00
Makefile
mmap.c	LoongArch: Support access filter to /dev/mem interface	2022-10-12 16:36:14 +08:00
page.S	LoongArch: Re-tab the assembly files	2022-07-29 18:22:32 +08:00
pgtable.c	MIPS&LoongArch&NIOS2: adjust prototypes of p?d_init()	2022-12-11 18:12:11 -08:00
tlb.c	LoongArch: Add generic ex-handler unwind in prologue unwinder	2023-01-17 11:42:16 +08:00
tlbex.S	LoongArch: Add la_abs macro implementation	2023-02-25 22:12:16 +08:00