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Message-Id: <20230301085109.2373524-1-chenhuacai@loongson.cn>
Date: Wed, 1 Mar 2023 16:51:09 +0800
From: Huacai Chen <chenhuacai@...ngson.cn>
To: Arnd Bergmann <arnd@...db.de>, Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev, linux-arch@...r.kernel.org,
Xuefeng Li <lixuefeng@...ngson.cn>,
Guo Ren <guoren@...nel.org>, Xuerui Wang <kernel@...0n.name>,
Jiaxun Yang <jiaxun.yang@...goat.com>,
linux-kernel@...r.kernel.org, loongson-kernel@...ts.loongnix.cn,
Huacai Chen <chenhuacai@...ngson.cn>
Subject: [PATCH] LoongArch: Export some symbols without GPL
Some symbols, i.e., 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.
Details about vm_map_base: may be referenced through macros PCI_IOBASE,
VMALLOC_START and VMALLOC_END.
Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
---
arch/loongarch/kernel/cpu-probe.c | 2 +-
arch/loongarch/mm/init.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/loongarch/kernel/cpu-probe.c b/arch/loongarch/kernel/cpu-probe.c
index 008b0249905f..001e43dd94ca 100644
--- a/arch/loongarch/kernel/cpu-probe.c
+++ b/arch/loongarch/kernel/cpu-probe.c
@@ -60,7 +60,7 @@ static inline void set_elf_platform(int cpu, const char *plat)
/* MAP BASE */
unsigned long vm_map_base;
-EXPORT_SYMBOL_GPL(vm_map_base);
+EXPORT_SYMBOL(vm_map_base);
static void cpu_probe_addrbits(struct cpuinfo_loongarch *c)
{
diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c
index e018aed34586..3b7d8129570b 100644
--- a/arch/loongarch/mm/init.c
+++ b/arch/loongarch/mm/init.c
@@ -41,7 +41,7 @@
* don't have to care about aliases on other CPUs.
*/
unsigned long empty_zero_page, zero_page_mask;
-EXPORT_SYMBOL_GPL(empty_zero_page);
+EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(zero_page_mask);
void setup_zero_pages(void)
@@ -270,7 +270,7 @@ pud_t invalid_pud_table[PTRS_PER_PUD] __page_aligned_bss;
#endif
#ifndef __PAGETABLE_PMD_FOLDED
pmd_t invalid_pmd_table[PTRS_PER_PMD] __page_aligned_bss;
-EXPORT_SYMBOL_GPL(invalid_pmd_table);
+EXPORT_SYMBOL(invalid_pmd_table);
#endif
pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned_bss;
EXPORT_SYMBOL(invalid_pte_table);
--
2.39.1
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