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| author |   Paul Mundt <lethal@linux-sh.org> | 2012-05-14 15:07:52 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-05-14 15:07:52 +0900 |
| commit | 9a7b7739f9dba4014fc93531e4c2b6efac41b0a7 (patch) | |
| tree | 8f9f69de41c2b46f3c1e174e4b0676ca9f53dece | |
| parent | sh: Support thread fault code encoding. (diff) | |
| download | linux-dev-9a7b7739f9dba4014fc93531e4c2b6efac41b0a7.tar.xz linux-dev-9a7b7739f9dba4014fc93531e4c2b6efac41b0a7.zip | |
sh64: Utilize thread fault code encoding.
This plugs in fault code encoding for the sh64 page fault, too.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | arch/sh/kernel/cpu/sh5/entry.S | 20 | ||||
| -rw-r--r-- | arch/sh/mm/tlbflush_64.c | 12 |
2 files changed, 16 insertions, 16 deletions
diff --git a/arch/sh/kernel/cpu/sh5/entry.S b/arch/sh/kernel/cpu/sh5/entry.S index 6b80295dd7a4..de60dc8d737d 100644 --- a/arch/sh/kernel/cpu/sh5/entry.S +++ b/arch/sh/kernel/cpu/sh5/entry.S @@ -1079,9 +1079,8 @@ restore_all: * * Kernel TLB fault handlers will get a slightly different interface. * (r2) struct pt_regs *, original register's frame pointer - * (r3) writeaccess, whether it's a store fault as opposed to load fault - * (r4) execaccess, whether it's a ITLB fault as opposed to DTLB fault - * (r5) Effective Address of fault + * (r3) page fault error code (see asm/thread_info.h) + * (r4) Effective Address of fault * (LINK) return address * (SP) = r2 * @@ -1092,26 +1091,25 @@ restore_all: tlb_miss_load: or SP, ZERO, r2 or ZERO, ZERO, r3 /* Read */ - or ZERO, ZERO, r4 /* Data */ - getcon TEA, r5 + getcon TEA, r4 pta call_do_page_fault, tr0 beq ZERO, ZERO, tr0 tlb_miss_store: or SP, ZERO, r2 - movi 1, r3 /* Write */ - or ZERO, ZERO, r4 /* Data */ - getcon TEA, r5 + movi FAULT_CODE_WRITE, r3 /* Write */ + getcon TEA, r4 pta call_do_page_fault, tr0 beq ZERO, ZERO, tr0 itlb_miss_or_IRQ: pta its_IRQ, tr0 beqi/u r4, EVENT_INTERRUPT, tr0 + + /* ITLB miss */ or SP, ZERO, r2 - or ZERO, ZERO, r3 /* Read */ - movi 1, r4 /* Text */ - getcon TEA, r5 + movi FAULT_CODE_ITLB, r3 + getcon TEA, r4 /* Fall through */ call_do_page_fault: diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c index be01f92f8c89..99c5833036be 100644 --- a/arch/sh/mm/tlbflush_64.c +++ b/arch/sh/mm/tlbflush_64.c @@ -61,15 +61,17 @@ static pte_t *lookup_pte(struct mm_struct *mm, unsigned long address) * and the problem, and then passes it off to one of the appropriate * routines. */ -asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long writeaccess, - unsigned long textaccess, unsigned long address) +asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long error_code, + unsigned long address) { struct task_struct *tsk; struct mm_struct *mm; struct vm_area_struct * vma; const struct exception_table_entry *fixup; + int write = error_code & FAULT_CODE_WRITE; + int textaccess = error_code & FAULT_CODE_ITLB; unsigned int flags = (FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE | - (writeaccess ? FAULT_FLAG_WRITE : 0)); + (write ? FAULT_FLAG_WRITE : 0)); pte_t *pte; int fault; @@ -122,7 +124,7 @@ good_area: if (!(vma->vm_flags & VM_EXEC)) goto bad_area; } else { - if (writeaccess) { + if (write) { if (!(vma->vm_flags & VM_WRITE)) goto bad_area; } else { @@ -239,7 +241,7 @@ no_context: printk(KERN_ALERT "Unable to handle kernel paging request"); printk(" at virtual address %08lx\n", address); printk(KERN_ALERT "pc = %08Lx%08Lx\n", regs->pc >> 32, regs->pc & 0xffffffff); - die("Oops", regs, writeaccess); + die("Oops", regs, error_code); do_exit(SIGKILL); /* |