Context |
Check |
Description |
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/merge (626a6c3d2e20da80aaa710104f34ea6037b28b33)
|
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/next (6895c5ba7bdcc55eacad03cf309ab23be63b9cac)
|
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch linus/master (92bf22614b21a2706f4993b278017e437f7785b3)
|
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/fixes (24321ac668e452a4942598533d267805f291fdc9)
|
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch linux-next (1e0d27fce010b0a4a9e595506b6ede75934c31be)
|
snowpatch_ozlabs/apply_patch |
fail
|
Failed to apply to any branch
|
@@ -57,6 +57,12 @@
.endm
.macro EXCEPTION_PROLOG_2 handle_dar_dsisr=0
+#ifdef CONFIG_PPC_8xx
+ .if \handle_dar_dsisr
+ li r11, RPN_PATTERN
+ mtspr SPRN_DAR, r11 /* Tag DAR, to be used in DTLB Error */
+ .endif
+#endif
LOAD_REG_IMMEDIATE(r11, MSR_KERNEL & ~(MSR_IR | MSR_RI)) /* can take DTLB miss */
mtmsr r11
isync
@@ -30,6 +30,12 @@
#include <asm/export.h>
#include <asm/code-patching-asm.h>
+/*
+ * Value for the bits that have fixed value in RPN entries.
+ * Also used for tagging DAR for DTLBerror.
+ */
+#define RPN_PATTERN 0x00f0
+
#include "head_32.h"
.macro compare_to_kernel_boundary scratch, addr
@@ -42,12 +48,6 @@
#endif
.endm
-/*
- * Value for the bits that have fixed value in RPN entries.
- * Also used for tagging DAR for DTLBerror.
- */
-#define RPN_PATTERN 0x00f0
-
#define PAGE_SHIFT_512K 19
#define PAGE_SHIFT_8M 23
@@ -124,8 +124,6 @@ instruction_counter:
. = 0x200
MachineCheck:
EXCEPTION_PROLOG handle_dar_dsisr=1
- li r6, RPN_PATTERN
- mtspr SPRN_DAR, r6 /* Tag DAR, to be used in DTLB Error */
addi r3,r1,STACK_FRAME_OVERHEAD
EXC_XFER_STD(0x200, machine_check_exception)
@@ -136,8 +134,6 @@ MachineCheck:
. = 0x600
Alignment:
EXCEPTION_PROLOG handle_dar_dsisr=1
- li r6, RPN_PATTERN
- mtspr SPRN_DAR, r6 /* Tag DAR, to be used in DTLB Error */
addi r3,r1,STACK_FRAME_OVERHEAD
b .Lalignment_exception_ool
@@ -331,8 +327,6 @@ DataTLBError:
cmpwi cr1, r11, RPN_PATTERN
beq- cr1, FixupDAR /* must be a buggy dcbX, icbi insn. */
DARFixed:/* Return from dcbx instruction bug workaround */
- li r11, RPN_PATTERN
- mtspr SPRN_DAR, r11 /* Tag DAR, to be used in DTLB Error */
EXCEPTION_PROLOG_1
EXCEPTION_PROLOG_2 handle_dar_dsisr=1
lwz r4, _DAR(r11)
8xx requires to tag the DAR with a magic value in order to detect fixup DAR on faults generated by 'dcbX', as the 8xx forgets to update the DAR for those faults. Do the tagging as early as possible, that is before enabling MMU. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- arch/powerpc/kernel/head_32.h | 6 ++++++ arch/powerpc/kernel/head_8xx.S | 18 ++++++------------ 2 files changed, 12 insertions(+), 12 deletions(-)