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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-06-13 10:36:00 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2016-08-24 09:23:55 +0200 |
| commit | 44b6cc8130e80e673ba8b3baf8e41891fe484786 (patch) | |
| tree | 08427794ef7fd6898a965addc41f672e544557b9 /arch/s390/include/asm/mmu_context.h | |
| parent | s390/mm: no local TLB flush for clearing-by-ASCE IDTE (diff) | |
| download | linux-dev-44b6cc8130e80e673ba8b3baf8e41891fe484786.tar.xz linux-dev-44b6cc8130e80e673ba8b3baf8e41891fe484786.zip | |
s390/mm,kvm: flush gmap address space with IDTE
The __tlb_flush_mm() helper uses a global flush if the mm struct
has a gmap structure attached to it. Replace the global flush with
two individual flushes by means of the IDTE instruction if only a
single gmap is attached the the mm.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/mmu_context.h')
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index c6a088c91aee..515fea5a3fc4 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -21,6 +21,7 @@ static inline int init_new_context(struct task_struct *tsk, INIT_LIST_HEAD(&mm->context.gmap_list); cpumask_clear(&mm->context.cpu_attach_mask); atomic_set(&mm->context.flush_count, 0); + mm->context.gmap_asce = 0; mm->context.flush_mm = 0; #ifdef CONFIG_PGSTE mm->context.alloc_pgste = page_table_allocate_pgste; |