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authorAndy Lutomirski <luto@kernel.org>2019-06-26 21:46:18 -0700
committerPaul Walmsley <paul.walmsley@sifive.com>2019-07-01 13:13:36 -0700
commit556024d41f39ce23809178dd81e1f95802ae7d94 (patch)
treeeb9c7c761bf0006c8d1bfcfe7906cf5bc27ea641 /arch/riscv
parent71ec982fad75aea7ca409a55eefecff328597f62 (diff)
riscv: Remove gate area stubs
Since commit a6c19dfe3994 ("arm64,ia64,ppc,s390,sh,tile,um,x86,mm: remove default gate area"), which predates riscv's inclusion in Linux by almost three years, the default behavior wrt the gate area is sane. Remove riscv's gate area stubs. Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: linux-riscv@lists.infradead.org Signed-off-by: Andy Lutomirski <luto@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/include/asm/page.h4
-rw-r--r--arch/riscv/kernel/vdso.c19
2 files changed, 0 insertions, 23 deletions
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 8ddb6c7fedac..d3e5f6c0c21a 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -115,8 +115,4 @@ extern unsigned long min_low_pfn;
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
-/* vDSO support */
-/* We do define AT_SYSINFO_EHDR but don't use the gate mechanism */
-#define __HAVE_ARCH_GATE_AREA
-
#endif /* _ASM_RISCV_PAGE_H */
diff --git a/arch/riscv/kernel/vdso.c b/arch/riscv/kernel/vdso.c
index a0084c36d270..c9c21e0d5641 100644
--- a/arch/riscv/kernel/vdso.c
+++ b/arch/riscv/kernel/vdso.c
@@ -92,22 +92,3 @@ const char *arch_vma_name(struct vm_area_struct *vma)
return "[vdso]";
return NULL;
}
-
-/*
- * Function stubs to prevent linker errors when AT_SYSINFO_EHDR is defined
- */
-
-int in_gate_area_no_mm(unsigned long addr)
-{
- return 0;
-}
-
-int in_gate_area(struct mm_struct *mm, unsigned long addr)
-{
- return 0;
-}
-
-struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
-{
- return NULL;
-}