[SPARC64]: Correctable ECC errors cannot occur at trap level > 0.
The are distrupting, which by the sparc v9 definition means they
can only occur when interrupts are enabled in the %pstate register.
This never occurs in any of the trap handling code running at
trap levels > 0.
So just mark it as an unexpected trap.
This allows us to kill off the cee_stuff member of struct thread_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index f47f4874..7e52e89 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -2169,7 +2169,6 @@
TI_KERN_CNTD0 != offsetof(struct thread_info, kernel_cntd0) ||
TI_KERN_CNTD1 != offsetof(struct thread_info, kernel_cntd1) ||
TI_PCR != offsetof(struct thread_info, pcr_reg) ||
- TI_CEE_STUFF != offsetof(struct thread_info, cee_stuff) ||
TI_PRE_COUNT != offsetof(struct thread_info, preempt_count) ||
TI_NEW_CHILD != offsetof(struct thread_info, new_child) ||
TI_SYS_NOERROR != offsetof(struct thread_info, syscall_noerror) ||
diff --git a/arch/sparc64/kernel/ttable.S b/arch/sparc64/kernel/ttable.S
index 2fb7a33..9953142 100644
--- a/arch/sparc64/kernel/ttable.S
+++ b/arch/sparc64/kernel/ttable.S
@@ -222,23 +222,7 @@
tl1_ivec: TRAP_IVEC
tl1_paw: TRAPTL1(do_paw_tl1)
tl1_vaw: TRAPTL1(do_vaw_tl1)
-
- /* The grotty trick to save %g1 into current->thread.cee_stuff
- * is because when we take this trap we could be interrupting
- * trap code already using the trap alternate global registers.
- *
- * We cross our fingers and pray that this store/load does
- * not cause yet another CEE trap.
- */
-tl1_cee: membar #Sync
- stx %g1, [%g6 + TI_CEE_STUFF]
- ldxa [%g0] ASI_AFSR, %g1
- membar #Sync
- stxa %g1, [%g0] ASI_AFSR
- membar #Sync
- ldx [%g6 + TI_CEE_STUFF], %g1
- retry
-
+tl1_cee: BTRAPTL1(0x63)
tl1_iamiss: BTRAPTL1(0x64) BTRAPTL1(0x65) BTRAPTL1(0x66) BTRAPTL1(0x67)
tl1_damiss:
#include "dtlb_miss.S"
diff --git a/include/asm-sparc64/thread_info.h b/include/asm-sparc64/thread_info.h
index ac9d068..2ebf7f2 100644
--- a/include/asm-sparc64/thread_info.h
+++ b/include/asm-sparc64/thread_info.h
@@ -64,8 +64,6 @@
__u64 kernel_cntd0, kernel_cntd1;
__u64 pcr_reg;
- __u64 cee_stuff;
-
struct restart_block restart_block;
struct pt_regs *kern_una_regs;
@@ -104,10 +102,9 @@
#define TI_KERN_CNTD0 0x00000480
#define TI_KERN_CNTD1 0x00000488
#define TI_PCR 0x00000490
-#define TI_CEE_STUFF 0x00000498
-#define TI_RESTART_BLOCK 0x000004a0
-#define TI_KUNA_REGS 0x000004c8
-#define TI_KUNA_INSN 0x000004d0
+#define TI_RESTART_BLOCK 0x00000498
+#define TI_KUNA_REGS 0x000004c0
+#define TI_KUNA_INSN 0x000004c8
#define TI_FPREGS 0x00000500
/* We embed this in the uppermost byte of thread_info->flags */