Messages in this thread | | | Subject | Re: [PATCH v2 09/19] s390/vdso: Remove vdso_base pointer from mm->context | From | Christophe Leroy <> | Date | Tue, 24 Nov 2020 07:22:45 +0100 |
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Le 24/11/2020 à 01:29, Dmitry Safonov a écrit : > Not used any more.
Same, what about mremap(), why can it be removed ?
> > 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; > >
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