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06beb72fbe
We need to decide in some cases like uprobe instruction analysis that whether the current mm context belongs to a 32 bit task or 64 bit. This patch has introduced an unsigned flag variable in mm_context_t. Currently, we set and clear TIF_32BIT depending on the condition that whether an elf binary load sets personality for 32 bit or 64 bit respectively. Signed-off-by: Pratyush Anand <panand@redhat.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/*
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* Copyright (C) 2012 ARM Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __ASM_MMU_H
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#define __ASM_MMU_H
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typedef struct {
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atomic64_t id;
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void *vdso;
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unsigned long flags;
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} mm_context_t;
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/*
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* This macro is only used by the TLBI code, which cannot race with an
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* ASID change and therefore doesn't need to reload the counter using
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* atomic64_read.
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*/
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#define ASID(mm) ((mm)->context.id.counter & 0xffff)
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extern void paging_init(void);
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extern void bootmem_init(void);
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extern void __iomem *early_io_map(phys_addr_t phys, unsigned long virt);
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extern void init_mem_pgprot(void);
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extern void create_pgd_mapping(struct mm_struct *mm, phys_addr_t phys,
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unsigned long virt, phys_addr_t size,
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pgprot_t prot, bool page_mappings_only);
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extern void *fixmap_remap_fdt(phys_addr_t dt_phys);
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#endif
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