diff options
| author | Kenneth Lee <liguozhu@hisilicon.com> | 2021-07-28 10:15:57 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-08-14 01:31:51 +0300 |
| commit | fb31f0a499332a053477ed57312b214e42476e6d (patch) | |
| tree | fced1bec338729aa13e1a1b0828909981f1c4be3 /arch/riscv | |
| parent | fe45ffa4c505783637233609b677446020738b87 (diff) | |
| download | linux-fb31f0a499332a053477ed57312b214e42476e6d.tar.xz | |
riscv: fix the global name pfn_base confliction error
RISCV uses a global variable pfn_base for page/pfn translation. But this
is a common name and will be used elsewhere. In those cases, the
page-pfn macros which refer to this name will be referred to the
local/input variable instead. (such as in vfio_pin_pages_remote). This
make everything wrong.
This patch changes the name from pfn_base to riscv_pfn_base to fix
this problem.
Signed-off-by: Kenneth Lee <liguozhu@hisilicon.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Diffstat (limited to 'arch/riscv')
| -rw-r--r-- | arch/riscv/include/asm/page.h | 4 | ||||
| -rw-r--r-- | arch/riscv/mm/init.c | 6 |
2 files changed, 5 insertions, 5 deletions
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h index 4da92cf28a19..d34327be7574 100644 --- a/arch/riscv/include/asm/page.h +++ b/arch/riscv/include/asm/page.h @@ -79,8 +79,8 @@ typedef struct page *pgtable_t; #endif #ifdef CONFIG_MMU -extern unsigned long pfn_base; -#define ARCH_PFN_OFFSET (pfn_base) +extern unsigned long riscv_pfn_base; +#define ARCH_PFN_OFFSET (riscv_pfn_base) #else #define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) #endif /* CONFIG_MMU */ diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index fdf093d01c6f..888dff9530b8 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -214,8 +214,8 @@ static struct pt_alloc_ops _pt_ops __initdata; #define pt_ops _pt_ops #endif -unsigned long pfn_base __ro_after_init; -EXPORT_SYMBOL(pfn_base); +unsigned long riscv_pfn_base __ro_after_init; +EXPORT_SYMBOL(riscv_pfn_base); pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss; pgd_t trampoline_pg_dir[PTRS_PER_PGD] __page_aligned_bss; @@ -587,7 +587,7 @@ asmlinkage void __init setup_vm(uintptr_t dtb_pa) kernel_map.va_pa_offset = PAGE_OFFSET - kernel_map.phys_addr; kernel_map.va_kernel_pa_offset = kernel_map.virt_addr - kernel_map.phys_addr; - pfn_base = PFN_DOWN(kernel_map.phys_addr); + riscv_pfn_base = PFN_DOWN(kernel_map.phys_addr); /* Sanity check alignment and size */ BUG_ON((PAGE_OFFSET % PGDIR_SIZE) != 0); |