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Commit 556024d4 authored by Andy Lutomirski's avatar Andy Lutomirski Committed by Paul Walmsley
Browse files

riscv: Remove gate area stubs 



Since commit a6c19dfe ("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: default avatarAndy Lutomirski <luto@kernel.org>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarPaul Walmsley <paul.walmsley@sifive.com>
parent 71ec982f

arch/riscv/include/asm/page.h

+0 −4
Original line number Diff line number Diff line
@@ -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 */

arch/riscv/kernel/vdso.c

+0 −19
Original line number Diff line number Diff line
@@ -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;

}