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-rw-r--r--arch/cris/arch-v10/mm/fault.c96
1 files changed, 0 insertions, 96 deletions
diff --git a/arch/cris/arch-v10/mm/fault.c b/arch/cris/arch-v10/mm/fault.c
deleted file mode 100644
index e6c2251..0000000
--- a/arch/cris/arch-v10/mm/fault.c
+++ /dev/null
@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * linux/arch/cris/mm/fault.c
- *
- * Low level bus fault handler
- *
- *
- * Copyright (C) 2000-2007 Axis Communications AB
- *
- * Authors: Bjorn Wesen
- *
- */
-
-#include <linux/mm.h>
-#include <linux/uaccess.h>
-#include <asm/pgtable.h>
-#include <arch/svinto.h>
-#include <asm/mmu_context.h>
-
-/* debug of low-level TLB reload */
-#undef DEBUG
-
-#ifdef DEBUG
-#define D(x) x
-#else
-#define D(x)
-#endif
-
-extern const struct exception_table_entry
- *search_exception_tables(unsigned long addr);
-
-asmlinkage void do_page_fault(unsigned long address, struct pt_regs *regs,
- int protection, int writeaccess);
-
-/* fast TLB-fill fault handler
- * this is called from entry.S with interrupts disabled
- */
-
-void
-handle_mmu_bus_fault(struct pt_regs *regs)
-{
- int cause;
- int select;
-#ifdef DEBUG
- int index;
- int page_id;
- int acc, inv;
-#endif
- pgd_t* pgd = (pgd_t*)per_cpu(current_pgd, smp_processor_id());
- pmd_t *pmd;
- pte_t pte;
- int miss, we, writeac;
- unsigned long address;
- unsigned long flags;
-
- cause = *R_MMU_CAUSE;
-
- address = cause & PAGE_MASK; /* get faulting address */
- select = *R_TLB_SELECT;
-
-#ifdef DEBUG
- page_id = IO_EXTRACT(R_MMU_CAUSE, page_id, cause);
- acc = IO_EXTRACT(R_MMU_CAUSE, acc_excp, cause);
- inv = IO_EXTRACT(R_MMU_CAUSE, inv_excp, cause);
- index = IO_EXTRACT(R_TLB_SELECT, index, select);
-#endif
- miss = IO_EXTRACT(R_MMU_CAUSE, miss_excp, cause);
- we = IO_EXTRACT(R_MMU_CAUSE, we_excp, cause);
- writeac = IO_EXTRACT(R_MMU_CAUSE, wr_rd, cause);
-
- D(printk("bus_fault from IRP 0x%lx: addr 0x%lx, miss %d, inv %d, we %d, acc %d, dx %d pid %d\n",
- regs->irp, address, miss, inv, we, acc, index, page_id));
-
- /* leave it to the MM system fault handler */
- if (miss)
- do_page_fault(address, regs, 0, writeac);
- else
- do_page_fault(address, regs, 1, we);
-
- /* Reload TLB with new entry to avoid an extra miss exception.
- * do_page_fault may have flushed the TLB so we have to restore
- * the MMU registers.
- */
- local_irq_save(flags);
- pmd = (pmd_t *)(pgd + pgd_index(address));
- if (pmd_none(*pmd))
- goto exit;
- pte = *pte_offset_kernel(pmd, address);
- if (!pte_present(pte))
- goto exit;
- *R_TLB_SELECT = select;
- *R_TLB_HI = cause;
- *R_TLB_LO = pte_val(pte);
-exit:
- local_irq_restore(flags);
-}
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