diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/sleep.S | 26 | ||||
| -rw-r--r-- | arch/arm/kernel/suspend.c | 8 |
2 files changed, 16 insertions, 18 deletions
diff --git a/arch/arm/kernel/sleep.S b/arch/arm/kernel/sleep.S index db1536b8b30b..622460201911 100644 --- a/arch/arm/kernel/sleep.S +++ b/arch/arm/kernel/sleep.S @@ -55,6 +55,7 @@ * specific registers and some other data for resume. * r0 = suspend function arg0 * r1 = suspend function + * r2 = MPIDR value the resuming CPU will use */ ENTRY(__cpu_suspend) stmfd sp!, {r4 - r11, lr} @@ -67,23 +68,18 @@ ENTRY(__cpu_suspend) mov r5, sp @ current virtual SP add r4, r4, #12 @ Space for pgd, virt sp, phys resume fn sub sp, sp, r4 @ allocate CPU state on stack - stmfd sp!, {r0, r1} @ save suspend func arg and pointer - add r0, sp, #8 @ save pointer to save block - mov r1, r4 @ size of save block - mov r2, r5 @ virtual SP ldr r3, =sleep_save_sp + stmfd sp!, {r0, r1} @ save suspend func arg and pointer ldr r3, [r3, #SLEEP_SAVE_SP_VIRT] - ALT_SMP(mrc p15, 0, r9, c0, c0, 5) - ALT_UP_B(1f) - ldr r8, =mpidr_hash - /* - * This ldmia relies on the memory layout of the mpidr_hash - * struct mpidr_hash. - */ - ldmia r8, {r4-r7} @ r4 = mpidr mask (r5,r6,r7) = l[0,1,2] shifts - compute_mpidr_hash lr, r5, r6, r7, r9, r4 - add r3, r3, lr, lsl #2 -1: + ALT_SMP(ldr r0, =mpidr_hash) + ALT_UP_B(1f) + /* This ldmia relies on the memory layout of the mpidr_hash struct */ + ldmia r0, {r1, r6-r8} @ r1 = mpidr mask (r6,r7,r8) = l[0,1,2] shifts + compute_mpidr_hash r0, r6, r7, r8, r2, r1 + add r3, r3, r0, lsl #2 +1: mov r2, r5 @ virtual SP + mov r1, r4 @ size of save block + add r0, sp, #8 @ pointer to save block bl __cpu_suspend_save adr lr, BSYM(cpu_suspend_abort) ldmfd sp!, {r0, pc} @ call suspend fn diff --git a/arch/arm/kernel/suspend.c b/arch/arm/kernel/suspend.c index 41cf3cbf756d..2835d35234ca 100644 --- a/arch/arm/kernel/suspend.c +++ b/arch/arm/kernel/suspend.c @@ -10,7 +10,7 @@ #include <asm/suspend.h> #include <asm/tlbflush.h> -extern int __cpu_suspend(unsigned long, int (*)(unsigned long)); +extern int __cpu_suspend(unsigned long, int (*)(unsigned long), u32 cpuid); extern void cpu_resume_mmu(void); #ifdef CONFIG_MMU @@ -21,6 +21,7 @@ extern void cpu_resume_mmu(void); int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) { struct mm_struct *mm = current->active_mm; + u32 __mpidr = cpu_logical_map(smp_processor_id()); int ret; if (!idmap_pgd) @@ -32,7 +33,7 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) * resume (indicated by a zero return code), we need to switch * back to the correct page tables. */ - ret = __cpu_suspend(arg, fn); + ret = __cpu_suspend(arg, fn, __mpidr); if (ret == 0) { cpu_switch_mm(mm->pgd, mm); local_flush_bp_all(); @@ -44,7 +45,8 @@ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) #else int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) { - return __cpu_suspend(arg, fn); + u32 __mpidr = cpu_logical_map(smp_processor_id()); + return __cpu_suspend(arg, fn, __mpidr); } #define idmap_pgd NULL #endif |