diff options
Diffstat (limited to 'arch/tile/kernel/intvec_64.S')
| -rw-r--r-- | arch/tile/kernel/intvec_64.S | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/arch/tile/kernel/intvec_64.S b/arch/tile/kernel/intvec_64.S index df19d4f..3b35bb4 100644 --- a/arch/tile/kernel/intvec_64.S +++ b/arch/tile/kernel/intvec_64.S @@ -132,13 +132,9 @@ intvec_\vecname: mfspr r3, SPR_SYSTEM_SAVE_K_0 /* Get &thread_info->unalign_jit_tmp[0] in r3. */ + bfexts r3, r3, 0, CPU_SHIFT-1 mm r3, zero, LOG2_THREAD_SIZE, 63 -#if THREAD_SIZE < 65536 - addli r3, r3, -(PAGE_SIZE - THREAD_INFO_UNALIGN_JIT_TMP_OFFSET) -#else - addli r3, r3, -(PAGE_SIZE/2) - addli r3, r3, -(PAGE_SIZE/2 - THREAD_INFO_UNALIGN_JIT_TMP_OFFSET) -#endif + addli r3, r3, THREAD_INFO_UNALIGN_JIT_TMP_OFFSET /* * Save r0, r1, r2 into thread_info array r3 points to @@ -365,13 +361,13 @@ intvec_\vecname: 2: /* - * SYSTEM_SAVE_K_0 holds the cpu number in the low bits, and - * the current stack top in the higher bits. So we recover - * our stack top by just masking off the low bits, then + * SYSTEM_SAVE_K_0 holds the cpu number in the high bits, and + * the current stack top in the lower bits. So we recover + * our starting stack value by sign-extending the low bits, then * point sp at the top aligned address on the actual stack page. */ mfspr r0, SPR_SYSTEM_SAVE_K_0 - mm r0, zero, LOG2_THREAD_SIZE, 63 + bfexts r0, r0, 0, CPU_SHIFT-1 0: /* @@ -393,6 +389,9 @@ intvec_\vecname: * cache line 1: r6...r13 * cache line 0: 2 x frame, r0..r5 */ +#if STACK_TOP_DELTA != 64 +#error STACK_TOP_DELTA must be 64 for assumptions here and in task_pt_regs() +#endif andi r0, r0, -64 /* @@ -690,7 +689,7 @@ intvec_\vecname: } { shl16insli r21, r21, hw1(__per_cpu_offset) - bfextu r20, r20, 0, LOG2_THREAD_SIZE-1 + bfextu r20, r20, CPU_SHIFT, 63 } shl16insli r21, r21, hw0(__per_cpu_offset) shl3add r20, r20, r21 |
