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Date:   Sat, 4 Feb 2017 12:44:34 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tipbuild@...or.com
Subject: [tip:WIP.sched/core 138/144] arch/mips/kernel/smp-mt.c:215:2: note:
 in expansion of macro 'write_tc_gpr_sp'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.sched/core
head:   f83f0b0647162b099f62e62c203b1cfb90b40239
commit: 3ab291518ff78c8410fd336e02eb59f10d98d4e7 [138/144] sched/headers: Split <linux/sched/task_stack> out of <linux/sched.h>
config: mips-malta_kvm_defconfig (attached as .config)
compiler: mipsel-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 3ab291518ff78c8410fd336e02eb59f10d98d4e7
        # save the attached .config to linux build tree
        make.cross ARCH=mips 

All warnings (new ones prefixed by >>):

   In file included from arch/mips/include/asm/irq.h:16:0,
                    from include/linux/irq.h:26,
                    from include/asm-generic/hardirq.h:12,
                    from arch/mips/include/asm/hardirq.h:16,
                    from include/linux/hardirq.h:8,
                    from include/linux/interrupt.h:12,
                    from arch/mips/kernel/smp-mt.c:23:
   arch/mips/kernel/smp-mt.c: In function 'vsmp_boot_secondary':
   arch/mips/include/asm/processor.h:384:41: error: implicit declaration of function 'task_stack_page' [-Werror=implicit-function-declaration]
    #define __KSTK_TOS(tsk) ((unsigned long)task_stack_page(tsk) + \
                                            ^
   arch/mips/include/asm/mipsmtregs.h:339:11: note: in definition of macro 'mttgpr'
     : : "r" (v));       \
              ^
>> arch/mips/kernel/smp-mt.c:215:2: note: in expansion of macro 'write_tc_gpr_sp'
     write_tc_gpr_sp( __KSTK_TOS(idle));
     ^~~~~~~~~~~~~~~
>> arch/mips/kernel/smp-mt.c:215:19: note: in expansion of macro '__KSTK_TOS'
     write_tc_gpr_sp( __KSTK_TOS(idle));
                      ^~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/write_tc_gpr_sp +215 arch/mips/kernel/smp-mt.c

41c594ab6 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-04-05   17   *    Ralf Baechle (ralf@...ux-mips.org)
41c594ab6 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-04-05   18   * Copyright (C) 2006 Ralf Baechle (ralf@...ux-mips.org)
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   19   */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   20  #include <linux/kernel.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   21  #include <linux/sched.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   22  #include <linux/cpumask.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  @23  #include <linux/interrupt.h>
4060bbe99 arch/mips/kernel/smp-mt.c Andrew Bresticker 2014-10-20   24  #include <linux/irqchip/mips-gic.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   25  #include <linux/compiler.h>
0ab7aefc4 arch/mips/kernel/smp-mt.c Ralf Baechle      2007-03-02   26  #include <linux/smp.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   27  
60063497a arch/mips/kernel/smp-mt.c Arun Sharma       2011-07-26   28  #include <linux/atomic.h>
41c594ab6 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-04-05   29  #include <asm/cacheflush.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   30  #include <asm/cpu.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   31  #include <asm/processor.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   32  #include <asm/hardirq.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   33  #include <asm/mmu_context.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   34  #include <asm/time.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   35  #include <asm/mipsregs.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   36  #include <asm/mipsmtregs.h>
41c594ab6 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-04-05   37  #include <asm/mips_mt.h>
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   38  
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28   39  static void __init smvp_copy_vpe_config(void)
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   40  {
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   41  	write_vpe_c0_status(
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   42  		(read_c0_status() & ~(ST0_IM | ST0_IE | ST0_KSU)) | ST0_CU0);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   43  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   44  	/* set config to be the same as vpe0, particularly kseg0 coherency alg */
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   45  	write_vpe_c0_config( read_c0_config());
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   46  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   47  	/* make sure there are no software interrupts pending */
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   48  	write_vpe_c0_cause(0);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   49  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   50  	/* Propagate Config7 */
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   51  	write_vpe_c0_config7(read_c0_config7());
70e46f48c arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   52  
70e46f48c arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   53  	write_vpe_c0_count(read_c0_count());
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   54  }
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   55  
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28   56  static unsigned int __init smvp_vpe_init(unsigned int tc, unsigned int mvpconf0,
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   57  	unsigned int ncpu)
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   58  {
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   59  	if (tc > ((mvpconf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT))
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   60  		return ncpu;
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   61  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   62  	/* Deactivate all but VPE 0 */
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   63  	if (tc != 0) {
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   64  		unsigned long tmp = read_vpe_c0_vpeconf0();
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   65  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   66  		tmp &= ~VPECONF0_VPA;
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   67  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   68  		/* master VPE */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   69  		tmp |= VPECONF0_MVP;
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   70  		write_vpe_c0_vpeconf0(tmp);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   71  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   72  		/* Record this as available CPU */
4037ac6e2 arch/mips/kernel/smp-mt.c Rusty Russell     2009-09-24   73  		set_cpu_possible(tc, true);
c2c2a6449 arch/mips/kernel/smp-mt.c Markos Chandras   2013-10-09   74  		set_cpu_present(tc, true);
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   75  		__cpu_number_map[tc]	= ++ncpu;
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   76  		__cpu_logical_map[ncpu] = tc;
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   77  	}
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   78  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   79  	/* Disable multi-threading with TC's */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   80  	write_vpe_c0_vpecontrol(read_vpe_c0_vpecontrol() & ~VPECONTROL_TE);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   81  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   82  	if (tc != 0)
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28   83  		smvp_copy_vpe_config();
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   84  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   85  	return ncpu;
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   86  }
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   87  
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28   88  static void __init smvp_tc_init(unsigned int tc, unsigned int mvpconf0)
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   89  {
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   90  	unsigned long tmp;
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   91  
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   92  	if (!tc)
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   93  		return;
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   94  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   95  	/* bind a TC to each VPE, May as well put all excess TC's
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   96  	   on the last VPE */
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   97  	if (tc >= (((mvpconf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT)+1))
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31   98  		write_tc_c0_tcbind(read_tc_c0_tcbind() | ((mvpconf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT));
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17   99  	else {
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  100  		write_tc_c0_tcbind(read_tc_c0_tcbind() | tc);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  101  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  102  		/* and set XTC */
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  103  		write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() | (tc << VPECONF0_XTC_SHIFT));
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  104  	}
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  105  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  106  	tmp = read_tc_c0_tcstatus();
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  107  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  108  	/* mark not allocated and not dynamically allocatable */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  109  	tmp &= ~(TCSTATUS_A | TCSTATUS_DA);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  110  	tmp |= TCSTATUS_IXMT;		/* interrupt exempt */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  111  	write_tc_c0_tcstatus(tmp);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  112  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  113  	write_tc_c0_tchalt(TCHALT_H);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  114  }
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  115  
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  116  static void vsmp_send_ipi_single(int cpu, unsigned int action)
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  117  {
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  118  	int i;
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  119  	unsigned long flags;
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  120  	int vpflags;
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  121  
8a19b8f19 arch/mips/kernel/smp-mt.c Andrew Bresticker 2014-09-18  122  #ifdef CONFIG_MIPS_GIC
5cf8b2409 arch/mips/kernel/smp-mt.c Steven J. Hill    2013-10-09  123  	if (gic_present) {
bb11cff32 arch/mips/kernel/smp-mt.c Qais Yousef       2015-12-08  124  		mips_smp_send_ipi_single(cpu, action);
5cf8b2409 arch/mips/kernel/smp-mt.c Steven J. Hill    2013-10-09  125  		return;
5cf8b2409 arch/mips/kernel/smp-mt.c Steven J. Hill    2013-10-09  126  	}
5cf8b2409 arch/mips/kernel/smp-mt.c Steven J. Hill    2013-10-09  127  #endif
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  128  	local_irq_save(flags);
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  129  
25985edce arch/mips/kernel/smp-mt.c Lucas De Marchi   2011-03-30  130  	vpflags = dvpe();	/* can't access the other CPU's registers whilst MVPE enabled */
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  131  
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  132  	switch (action) {
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  133  	case SMP_CALL_FUNCTION:
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  134  		i = C_SW1;
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  135  		break;
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  136  
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  137  	case SMP_RESCHEDULE_YOURSELF:
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  138  	default:
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  139  		i = C_SW0;
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  140  		break;
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  141  	}
0ab7aefc4 arch/mips/kernel/smp-mt.c Ralf Baechle      2007-03-02  142  
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  143  	/* 1:1 mapping of vpe and tc... */
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  144  	settc(cpu);
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  145  	write_vpe_c0_cause(read_vpe_c0_cause() | i);
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  146  	evpe(vpflags);
781b0f8d4 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-10-31  147  
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  148  	local_irq_restore(flags);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  149  }
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  150  
48a048fed arch/mips/kernel/smp-mt.c Rusty Russell     2009-09-24  151  static void vsmp_send_ipi_mask(const struct cpumask *mask, unsigned int action)
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  152  {
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  153  	unsigned int i;
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  154  
48a048fed arch/mips/kernel/smp-mt.c Rusty Russell     2009-09-24  155  	for_each_cpu(i, mask)
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  156  		vsmp_send_ipi_single(i, action);
41c594ab6 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-04-05  157  }
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  158  
078a55fc8 arch/mips/kernel/smp-mt.c Paul Gortmaker    2013-06-18  159  static void vsmp_init_secondary(void)
41c594ab6 arch/mips/kernel/smp-mt.c Ralf Baechle      2006-04-05  160  {
8a19b8f19 arch/mips/kernel/smp-mt.c Andrew Bresticker 2014-09-18  161  #ifdef CONFIG_MIPS_GIC
d002aaadf arch/mips/kernel/smp-mt.c Ralf Baechle      2010-12-01  162  	/* This is Malta specific: IPI,performance and timer interrupts */
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28  163  	if (gic_present)
c3f134fb3 arch/mips/kernel/smp-mt.c James Hogan       2015-01-16  164  		change_c0_status(ST0_IM, STATUSF_IP2 | STATUSF_IP3 |
c3f134fb3 arch/mips/kernel/smp-mt.c James Hogan       2015-01-16  165  					 STATUSF_IP4 | STATUSF_IP5 |
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28  166  					 STATUSF_IP6 | STATUSF_IP7);
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28  167  	else
1c5992427 arch/mips/kernel/smp-mt.c Anoop P A         2011-01-25  168  #endif
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28  169  		change_c0_status(ST0_IM, STATUSF_IP0 | STATUSF_IP1 |
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28  170  					 STATUSF_IP6 | STATUSF_IP7);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  171  }
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  172  
078a55fc8 arch/mips/kernel/smp-mt.c Paul Gortmaker    2013-06-18  173  static void vsmp_smp_finish(void)
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  174  {
39b8d5254 arch/mips/kernel/smp-mt.c Ralf Baechle      2008-04-28  175  	/* CDFIXME: remove this? */
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  176  	write_c0_compare(read_c0_count() + (8* mips_hpt_frequency/HZ));
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  177  
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  178  #ifdef CONFIG_MIPS_MT_FPAFF
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  179  	/* If we have an FPU, enroll ourselves in the FPU-full mask */
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  180  	if (cpu_has_fpu)
8dd928915 arch/mips/kernel/smp-mt.c Rusty Russell     2015-03-05  181  		cpumask_set_cpu(smp_processor_id(), &mt_fpu_cpumask);
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  182  #endif /* CONFIG_MIPS_MT_FPAFF */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  183  
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  184  	local_irq_enable();
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  185  }
87353d8ac arch/mips/kernel/smp-mt.c Ralf Baechle      2007-11-19  186  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  187  /*
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  188   * Setup the PC, SP, and GP of a secondary processor and start it
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  189   * running!
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  190   * smp_bootstrap is the place to resume from
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  191   * __KSTK_TOS(idle) is apparently the stack pointer
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  192   * (unsigned long)idle->thread_info the gp
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  193   * assumes a 1:1 mapping of TC => VPE
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  194   */
078a55fc8 arch/mips/kernel/smp-mt.c Paul Gortmaker    2013-06-18  195  static void vsmp_boot_secondary(int cpu, struct task_struct *idle)
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  196  {
dc8f6029c arch/mips/kernel/smp_mt.c Al Viro           2006-01-12  197  	struct thread_info *gp = task_thread_info(idle);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  198  	dvpe();
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  199  	set_c0_mvpcontrol(MVPCONTROL_VPC);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  200  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  201  	settc(cpu);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  202  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  203  	/* restart */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  204  	write_tc_c0_tcrestart((unsigned long)&smp_bootstrap);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  205  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  206  	/* enable the tc this vpe/cpu will be running */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  207  	write_tc_c0_tcstatus((read_tc_c0_tcstatus() & ~TCSTATUS_IXMT) | TCSTATUS_A);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  208  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  209  	write_tc_c0_tchalt(0);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  210  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  211  	/* enable the VPE */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  212  	write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() | VPECONF0_VPA);
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  213  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  214  	/* stack pointer */
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17 @215  	write_tc_gpr_sp( __KSTK_TOS(idle));
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  216  
340ee4b98 arch/mips/kernel/smp_mt.c Ralf Baechle      2005-08-17  217  	/* global pointer */
dc8f6029c arch/mips/kernel/smp_mt.c Al Viro           2006-01-12  218  	write_tc_gpr_gp((unsigned long)gp);

:::::: The code at line 215 was first introduced by commit
:::::: 340ee4b98c0543b5632cac975a7449a2d28762d8 Virtual SMP support for the 34K.

:::::: TO: Ralf Baechle <ralf@...ux-mips.org>
:::::: CC: Ralf Baechle <ralf@...ux-mips.org>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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