parisc: Drop per_cpu uaccess related exception_data struct

The last users have been migrated off by commits d19f5e4 ("parisc:
Clean up fixup routines for get_user()/put_user()") and 554bfec
("parisc: Fix access fault handling in pa_memcpy()").

Signed-off-by: Helge Deller <[email protected]>

Author: hdeller

arch/parisc/include/asm/uaccess.h

@@ -68,17 +68,6 @@ struct exception_table_entry {
 #define ASM_EXCEPTIONTABLE_ENTRY_EFAULT( fault_addr, except_addr )\
 	ASM_EXCEPTIONTABLE_ENTRY( fault_addr, except_addr + 1)
 
-/*
- * The page fault handler stores, in a per-cpu area, the following information
- * if a fixup routine is available.
- */
-struct exception_data {
-	unsigned long fault_ip;
-	unsigned long fault_gp;
-	unsigned long fault_space;
-	unsigned long fault_addr;
-};
-
 /*
  * load_sr2() preloads the space register %%sr2 - based on the value of
  * get_fs() - with either a value of 0 to access kernel space (KERNEL_DS which

arch/parisc/kernel/asm-offsets.c

@@ -297,11 +297,6 @@ int main(void)
 #else
 	DEFINE(HUGEPAGE_SIZE, PAGE_SIZE);
 #endif
-	BLANK();
-	DEFINE(EXCDATA_IP, offsetof(struct exception_data, fault_ip));
-	DEFINE(EXCDATA_GP, offsetof(struct exception_data, fault_gp));
-	DEFINE(EXCDATA_SPACE, offsetof(struct exception_data, fault_space));
-	DEFINE(EXCDATA_ADDR, offsetof(struct exception_data, fault_addr));
 	BLANK();
 	DEFINE(ASM_PDC_RESULT_SIZE, NUM_PDC_RESULT * sizeof(unsigned long));
 	BLANK();

arch/parisc/mm/fault.c

@@ -29,8 +29,6 @@
 #define BITSSET		0x1c0	/* for identifying LDCW */
 
 
-DEFINE_PER_CPU(struct exception_data, exception_data);
-
 int show_unhandled_signals = 1;
 
 /*
@@ -143,13 +141,6 @@ int fixup_exception(struct pt_regs *regs)
 
 	fix = search_exception_tables(regs->iaoq[0]);
 	if (fix) {
-		struct exception_data *d;
-		d = this_cpu_ptr(&exception_data);
-		d->fault_ip = regs->iaoq[0];
-		d->fault_gp = regs->gr[27];
-		d->fault_space = regs->isr;
-		d->fault_addr = regs->ior;
-
 		/*
 		 * Fix up get_user() and put_user().
 		 * ASM_EXCEPTIONTABLE_ENTRY_EFAULT() sets the least-significant