[PATCH v2 09/19] s390/vdso: Remove vdso_base pointer from mm->context

Dmitry Safonov
2020-11-24T00:30:00Z

Not used any more.

Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: linux-s390@vger.kernel.org
Signed-off-by: Dmitry Safonov <dima@arista.com>
---
arch/s390/include/asm/mmu.h | 1 -
arch/s390/kernel/vdso.c | 10 ----------
2 files changed, 11 deletions(-)

diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h
index e12ff0f29d1a..095d0596f700 100644
--- a/arch/s390/include/asm/mmu.h
+++ b/arch/s390/include/asm/mmu.h
@@ -15,7 +15,6 @@ typedef struct {
unsigned long gmap_asce;
unsigned long asce;
unsigned long asce_limit;
- unsigned long vdso_base;
/* The mmu context belongs to a secure guest. */
atomic_t is_protected;
/*
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 810b72f8985c..3f07711a07c1 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -58,18 +58,9 @@ static vm_fault_t vdso_fault(const struct vm_special_mapping *sm,
return 0;
}

-static int vdso_mremap(const struct vm_special_mapping *sm,
- struct vm_area_struct *vma)
-{
- current->mm->context.vdso_base = vma->vm_start;
-
- return 0;
-}
-
static const struct vm_special_mapping vdso_mapping = {
.name = "[vdso]",
.fault = vdso_fault,
- .mremap = vdso_mremap,
};

static int __init vdso_setup(char *str)
@@ -204,7 +195,6 @@ int arch_setup_additional_pages(unsigned long *sysinfo_ehdr)
goto out_up;
}

- current->mm->context.vdso_base = vdso_base;
*sysinfo_ehdr = vdso_base;
rc = 0;

--
2.29.2