Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fc9a0018 authored by Richard Weinberger's avatar Richard Weinberger Committed by Linus Torvalds
Browse files

um: set __HAVE_ARCH_GATE_AREA for x86_64 



Implement arch_vma_name() and make get_gate_vma(), in_gate_area() and
in_gate_area_no_mm() a nop.

We need arch_vma_name() to support vDSO.

Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 548f0a4e

arch/um/sys-x86_64/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -4,7 +4,7 @@ 
# Licensed under the GPL

#



obj-y = bug.o bugs.o delay.o fault.o ldt.o ptrace.o ptrace_user.o \

obj-y = bug.o bugs.o delay.o fault.o ldt.o ptrace.o ptrace_user.o mem.o \

	setjmp.o signal.o stub.o stub_segv.o syscalls.o syscall_table.o \

	sysrq.o ksyms.o tls.o

arch/um/sys-x86_64/asm/elf.h

+10 −0
Original line number Diff line number Diff line
@@ -119,4 +119,14 @@ extern long elf_aux_hwcap; 


#define SET_PERSONALITY(ex) do ; while(0)



#define __HAVE_ARCH_GATE_AREA 1

#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1

struct linux_binprm;

extern int arch_setup_additional_pages(struct linux_binprm *bprm,

	int uses_interp);



extern unsigned long um_vdso_addr;

#define AT_SYSINFO_EHDR 33

#define ARCH_DLINFO	NEW_AUX_ENT(AT_SYSINFO_EHDR, um_vdso_addr)



#endif

arch/um/sys-x86_64/mem.c

0 → 100644
+26 −0
Original line number Diff line number Diff line 
#include "linux/mm.h"

#include "asm/page.h"

#include "asm/mman.h"



const char *arch_vma_name(struct vm_area_struct *vma)

{

	if (vma->vm_mm && vma->vm_start == um_vdso_addr)

		return "[vdso]";



	return NULL;

}



struct vm_area_struct *get_gate_vma(struct mm_struct *mm)

{

	return NULL;

}



int in_gate_area(struct mm_struct *mm, unsigned long addr)

{

	return 0;

}



int in_gate_area_no_mm(unsigned long addr)

{

	return 0;

}