s390/vdso: move boot_vdso_data to vdso.c
The boot_vdso_data variable is related to the vdso code, the magic of the initial vdso area for the early boot and the replacement of it in vdso_init should all be put into vdso.c. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -46,6 +46,7 @@ struct vdso_per_cpu_data {
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extern struct vdso_data *vdso_data;
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extern struct vdso_data *vdso_data;
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void vdso_alloc_boot_cpu(struct lowcore *lowcore);
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int vdso_alloc_per_cpu(struct lowcore *lowcore);
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int vdso_alloc_per_cpu(struct lowcore *lowcore);
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void vdso_free_per_cpu(struct lowcore *lowcore);
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void vdso_free_per_cpu(struct lowcore *lowcore);
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@ -349,7 +349,7 @@ static void __init setup_lowcore(void)
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if (MACHINE_HAS_GS)
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if (MACHINE_HAS_GS)
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lc->mcesad |= bits;
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lc->mcesad |= bits;
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}
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}
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lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];
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vdso_alloc_boot_cpu(lc);
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lc->sync_enter_timer = S390_lowcore.sync_enter_timer;
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lc->sync_enter_timer = S390_lowcore.sync_enter_timer;
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lc->async_enter_timer = S390_lowcore.async_enter_timer;
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lc->async_enter_timer = S390_lowcore.async_enter_timer;
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lc->exit_timer = S390_lowcore.exit_timer;
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lc->exit_timer = S390_lowcore.exit_timer;
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@ -140,6 +140,20 @@ static void __init vdso_init_data(struct vdso_data *vd)
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*/
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*/
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#define SEGMENT_ORDER 2
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#define SEGMENT_ORDER 2
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/*
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* The initial vdso_data structure for the boot CPU. Eventually
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* it is replaced with a properly allocated structure in vdso_init.
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* This is necessary because a valid S390_lowcore.vdso_per_cpu_data
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* pointer is required to be able to return from an interrupt or
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* program check. See the exit paths in entry.S.
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*/
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struct vdso_data boot_vdso_data __initdata;
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void __init vdso_alloc_boot_cpu(struct lowcore *lowcore)
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{
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lowcore->vdso_per_cpu_data = (unsigned long) &boot_vdso_data;
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}
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int vdso_alloc_per_cpu(struct lowcore *lowcore)
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int vdso_alloc_per_cpu(struct lowcore *lowcore)
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{
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{
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unsigned long segment_table, page_table, page_frame;
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unsigned long segment_table, page_table, page_frame;
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