arch/mips/kvm/emulate.c:946:23: warning: no previous prototype for function 'kvm_mips_emul_eret'

[kernel test robot <lkp@intel.com>]

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Hi Huacai,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d835ff6c96ae6fa1ea474b0290a46e514ab6742b
commit: 0f78355c450835053fed85828c9d6526594c0921 KVM: MIPS: Enable KVM support for Loongson-3
date:   11 months ago
config: mips-randconfig-r026-20210504 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8f5a2a5836cc8e4c1def2bdeb022e7b496623439)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f78355c450835053fed85828c9d6526594c0921
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0f78355c450835053fed85828c9d6526594c0921
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=mips 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from include/linux/thread_info.h:38:
   In file included from arch/mips/include/asm/thread_info.h:16:
   In file included from arch/mips/include/asm/processor.h:14:
   In file included from include/linux/atomic.h:7:
   arch/mips/include/asm/atomic.h:262:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
   ATOMIC_SIP_OP(atomic64, s64, dsubu, lld, scd)
   ^
   arch/mips/include/asm/atomic.h:252:7: note: expanded from macro 'ATOMIC_SIP_OP'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/emulate.c:14:
   In file included from include/linux/ktime.h:24:
   In file included from include/linux/time.h:6:
   In file included from include/linux/seqlock.h:36:
   In file included from include/linux/spinlock.h:83:
   In file included from include/linux/spinlock_types.h:18:
   In file included from include/linux/lockdep.h:44:
   include/linux/debug_locks.h:17:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
           return xchg(&debug_locks, 0);
                  ^
   arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/emulate.c:14:
   In file included from include/linux/ktime.h:24:
   In file included from include/linux/time.h:74:
   In file included from include/linux/time32.h:13:
   In file included from include/linux/timex.h:65:
   In file included from arch/mips/include/asm/timex.h:19:
   In file included from arch/mips/include/asm/cpu-type.h:12:
   In file included from include/linux/smp.h:15:
   include/linux/llist.h:222:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
           return xchg(&head->first, NULL);
                  ^
   arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/emulate.c:15:
   In file included from include/linux/kvm_host.h:14:
   In file included from include/linux/mm.h:95:
   arch/mips/include/asm/pgtable.h:210:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
                   cmpxchg64(&buddy->pte, 0, _PAGE_GLOBAL);
                   ^
   arch/mips/include/asm/cmpxchg.h:220:2: note: expanded from macro 'cmpxchg64'
           cmpxchg((ptr), (o), (n));                                       \
           ^
   arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/emulate.c:15:
   In file included from include/linux/kvm_host.h:14:
   In file included from include/linux/mm.h:95:
   arch/mips/include/asm/pgtable.h:210:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
   arch/mips/include/asm/cmpxchg.h:220:2: note: expanded from macro 'cmpxchg64'
           cmpxchg((ptr), (o), (n));                                       \
           ^
   arch/mips/include/asm/cmpxchg.h:204:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/emulate.c:15:
   include/linux/kvm_host.h:331:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
           return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
                  ^
   arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/emulate.c:15:
   include/linux/kvm_host.h:331:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
   arch/mips/include/asm/cmpxchg.h:204:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/emulate.c:24:
   In file included from arch/mips/include/asm/mmu_context.h:23:
   arch/mips/include/asm/ginvt.h:41:20: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
           addr &= PAGE_MASK << 1;
                   ~~~~~~~~~ ^
   arch/mips/include/asm/ginvt.h:52:20: warning: shifting a negative signed value is undefined [-Wshift-negative-value]
           addr &= PAGE_MASK << 1;
                   ~~~~~~~~~ ^
>> arch/mips/kvm/emulate.c:946:23: warning: no previous prototype for function 'kvm_mips_emul_eret' [-Wmissing-prototypes]
   enum emulation_result kvm_mips_emul_eret(struct kvm_vcpu *vcpu)
                         ^
   arch/mips/kvm/emulate.c:946:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   enum emulation_result kvm_mips_emul_eret(struct kvm_vcpu *vcpu)
   ^
   static 
>> arch/mips/kvm/emulate.c:1029:23: warning: no previous prototype for function 'kvm_mips_emul_tlbr' [-Wmissing-prototypes]
   enum emulation_result kvm_mips_emul_tlbr(struct kvm_vcpu *vcpu)
                         ^
   arch/mips/kvm/emulate.c:1029:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   enum emulation_result kvm_mips_emul_tlbr(struct kvm_vcpu *vcpu)
   ^
   static 
>> arch/mips/kvm/emulate.c:1102:23: warning: no previous prototype for function 'kvm_mips_emul_tlbwi' [-Wmissing-prototypes]
   enum emulation_result kvm_mips_emul_tlbwi(struct kvm_vcpu *vcpu)
                         ^
   arch/mips/kvm/emulate.c:1102:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   enum emulation_result kvm_mips_emul_tlbwi(struct kvm_vcpu *vcpu)
   ^
   static 
>> arch/mips/kvm/emulate.c:1138:23: warning: no previous prototype for function 'kvm_mips_emul_tlbwr' [-Wmissing-prototypes]
   enum emulation_result kvm_mips_emul_tlbwr(struct kvm_vcpu *vcpu)
                         ^
   arch/mips/kvm/emulate.c:1138:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   enum emulation_result kvm_mips_emul_tlbwr(struct kvm_vcpu *vcpu)
   ^
   static 
>> arch/mips/kvm/emulate.c:1163:23: warning: no previous prototype for function 'kvm_mips_emul_tlbp' [-Wmissing-prototypes]
   enum emulation_result kvm_mips_emul_tlbp(struct kvm_vcpu *vcpu)
                         ^
   arch/mips/kvm/emulate.c:1163:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   enum emulation_result kvm_mips_emul_tlbp(struct kvm_vcpu *vcpu)
   ^
   static 
   21 warnings generated.
   Assembler messages:
   Fatal error: invalid -march= option: `mips64r2'
   clang-13: error: assembler command failed with exit code 1 (use -v to see invocation)
--
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/loongson_ipi.c:11:
   In file included from include/linux/kvm_host.h:7:
   In file included from include/linux/hardirq.h:5:
   In file included from include/linux/context_tracking_state.h:5:
   In file included from include/linux/percpu.h:6:
   In file included from include/linux/preempt.h:78:
   In file included from ./arch/mips/include/generated/asm/preempt.h:1:
   In file included from include/asm-generic/preempt.h:5:
   In file included from include/linux/thread_info.h:38:
   In file included from arch/mips/include/asm/thread_info.h:16:
   In file included from arch/mips/include/asm/processor.h:14:
   In file included from include/linux/atomic.h:7:
   arch/mips/include/asm/atomic.h:262:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
   ATOMIC_SIP_OP(atomic64, s64, dsubu, lld, scd)
   ^
   arch/mips/include/asm/atomic.h:252:7: note: expanded from macro 'ATOMIC_SIP_OP'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/loongson_ipi.c:11:
   In file included from include/linux/kvm_host.h:7:
   In file included from include/linux/hardirq.h:5:
   In file included from include/linux/context_tracking_state.h:5:
   In file included from include/linux/percpu.h:7:
   In file included from include/linux/smp.h:15:
   include/linux/llist.h:222:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
           return xchg(&head->first, NULL);
                  ^
   arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/loongson_ipi.c:11:
   In file included from include/linux/kvm_host.h:7:
   In file included from include/linux/hardirq.h:7:
   In file included from include/linux/lockdep.h:44:
   include/linux/debug_locks.h:17:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
           return xchg(&debug_locks, 0);
                  ^
   arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/loongson_ipi.c:11:
   In file included from include/linux/kvm_host.h:14:
   In file included from include/linux/mm.h:95:
   arch/mips/include/asm/pgtable.h:210:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
                   cmpxchg64(&buddy->pte, 0, _PAGE_GLOBAL);
                   ^
   arch/mips/include/asm/cmpxchg.h:220:2: note: expanded from macro 'cmpxchg64'
           cmpxchg((ptr), (o), (n));                                       \
           ^
   arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/loongson_ipi.c:11:
   In file included from include/linux/kvm_host.h:14:
   In file included from include/linux/mm.h:95:
   arch/mips/include/asm/pgtable.h:210:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
   arch/mips/include/asm/cmpxchg.h:220:2: note: expanded from macro 'cmpxchg64'
           cmpxchg((ptr), (o), (n));                                       \
           ^
   arch/mips/include/asm/cmpxchg.h:204:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/loongson_ipi.c:11:
   include/linux/kvm_host.h:331:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
           return cmpxchg(&vcpu->mode, IN_GUEST_MODE, EXITING_GUEST_MODE);
                  ^
   arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
   In file included from arch/mips/kvm/loongson_ipi.c:11:
   include/linux/kvm_host.h:331:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare]
   arch/mips/include/asm/cmpxchg.h:204:7: note: expanded from macro 'cmpxchg'
           if (!__SYNC_loongson3_war)                                      \
                ^
   arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war'
   # define __SYNC_loongson3_war   (1 << 31)
                                      ^
>> arch/mips/kvm/loongson_ipi.c:190:6: warning: no previous prototype for function 'kvm_init_loongson_ipi' [-Wmissing-prototypes]
   void kvm_init_loongson_ipi(struct kvm *kvm)
        ^
   arch/mips/kvm/loongson_ipi.c:190:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void kvm_init_loongson_ipi(struct kvm *kvm)
   ^
   static 
   15 warnings generated.
   Assembler messages:
   Fatal error: invalid -march= option: `mips64r2'
   clang-13: error: assembler command failed with exit code 1 (use -v to see invocation)


vim +/kvm_mips_emul_eret +946 arch/mips/kvm/emulate.c

e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   945  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  @946  enum emulation_result kvm_mips_emul_eret(struct kvm_vcpu *vcpu)
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   947  {
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   948  	struct mips_coproc *cop0 = vcpu->arch.cop0;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   949  	enum emulation_result er = EMULATE_DONE;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   950  
ede5f3e7b54a43 arch/mips/kvm/emulate.c       James Hogan   2016-10-25   951  	if (kvm_read_c0_guest_status(cop0) & ST0_ERL) {
ede5f3e7b54a43 arch/mips/kvm/emulate.c       James Hogan   2016-10-25   952  		kvm_clear_c0_guest_status(cop0, ST0_ERL);
ede5f3e7b54a43 arch/mips/kvm/emulate.c       James Hogan   2016-10-25   953  		vcpu->arch.pc = kvm_read_c0_guest_errorepc(cop0);
ede5f3e7b54a43 arch/mips/kvm/emulate.c       James Hogan   2016-10-25   954  	} else if (kvm_read_c0_guest_status(cop0) & ST0_EXL) {
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   955  		kvm_debug("[%#lx] ERET to %#lx\n", vcpu->arch.pc,
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   956  			  kvm_read_c0_guest_epc(cop0));
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   957  		kvm_clear_c0_guest_status(cop0, ST0_EXL);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   958  		vcpu->arch.pc = kvm_read_c0_guest_epc(cop0);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   959  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   960  	} else {
6ad78a5c75c5bc arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26   961  		kvm_err("[%#lx] ERET when MIPS_SR_EXL|MIPS_SR_ERL == 0\n",
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   962  			vcpu->arch.pc);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   963  		er = EMULATE_FAIL;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   964  	}
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   965  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   966  	return er;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   967  }
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   968  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   969  enum emulation_result kvm_mips_emul_wait(struct kvm_vcpu *vcpu)
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   970  {
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   971  	kvm_debug("[%#lx] !!!WAIT!!! (%#lx)\n", vcpu->arch.pc,
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   972  		  vcpu->arch.pending_exceptions);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   973  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   974  	++vcpu->stat.wait_exits;
1e09e86ac13747 arch/mips/kvm/emulate.c       James Hogan   2016-06-14   975  	trace_kvm_exit(vcpu, KVM_TRACE_EXIT_WAIT);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   976  	if (!vcpu->arch.pending_exceptions) {
f4474d50c7d483 arch/mips/kvm/emulate.c       James Hogan   2017-03-14   977  		kvm_vz_lose_htimer(vcpu);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   978  		vcpu->arch.wait = 1;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   979  		kvm_vcpu_block(vcpu);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   980  
d116e812f9026e arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26   981  		/*
d116e812f9026e arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26   982  		 * We we are runnable, then definitely go off to user space to
d116e812f9026e arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26   983  		 * check if any I/O interrupts are pending.
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   984  		 */
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   985  		if (kvm_check_request(KVM_REQ_UNHALT, vcpu)) {
72875d8a4d92f6 arch/mips/kvm/emulate.c       Radim Krčmář  2017-04-26   986  			kvm_clear_request(KVM_REQ_UNHALT, vcpu);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   987  			vcpu->run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   988  		}
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   989  	}
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   990  
d98403a525fe16 arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26   991  	return EMULATE_DONE;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   992  }
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21   993  
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14   994  static void kvm_mips_change_entryhi(struct kvm_vcpu *vcpu,
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14   995  				    unsigned long entryhi)
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14   996  {
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14   997  	struct mips_coproc *cop0 = vcpu->arch.cop0;
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14   998  	struct mm_struct *kern_mm = &vcpu->arch.guest_kernel_mm;
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14   999  	int cpu, i;
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1000  	u32 nasid = entryhi & KVM_ENTRYHI_ASID;
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1001  
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1002  	if (((kvm_read_c0_guest_entryhi(cop0) & KVM_ENTRYHI_ASID) != nasid)) {
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1003  		trace_kvm_asid_change(vcpu, kvm_read_c0_guest_entryhi(cop0) &
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1004  				      KVM_ENTRYHI_ASID, nasid);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1005  
d116e812f9026e arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26  1006  		/*
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1007  		 * Flush entries from the GVA page tables.
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1008  		 * Guest user page table will get flushed lazily on re-entry to
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1009  		 * guest user if the guest ASID actually changes.
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1010  		 */
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1011  		kvm_mips_flush_gva_pt(kern_mm->pgd, KMF_KERN);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1012  
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1013  		/*
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1014  		 * Regenerate/invalidate kernel MMU context.
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1015  		 * The user MMU context will be regenerated lazily on re-entry
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1016  		 * to guest user if the guest ASID actually changes.
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1017  		 */
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1018  		preempt_disable();
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1019  		cpu = smp_processor_id();
4739f7dd99d757 arch/mips/kvm/emulate.c       Paul Burton   2019-02-02  1020  		get_new_mmu_context(kern_mm);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1021  		for_each_possible_cpu(i)
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1022  			if (i != cpu)
0b317c389c6771 arch/mips/kvm/emulate.c       Paul Burton   2019-02-02  1023  				set_cpu_context(i, kern_mm, 0);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1024  		preempt_enable();
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1025  	}
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1026  	kvm_write_c0_guest_entryhi(cop0, entryhi);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1027  }
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1028  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21 @1029  enum emulation_result kvm_mips_emul_tlbr(struct kvm_vcpu *vcpu)
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1030  {
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1031  	struct mips_coproc *cop0 = vcpu->arch.cop0;
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1032  	struct kvm_mips_tlb *tlb;
8cffd197485122 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1033  	unsigned long pc = vcpu->arch.pc;
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1034  	int index;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1035  
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1036  	index = kvm_read_c0_guest_index(cop0);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1037  	if (index < 0 || index >= KVM_MIPS_GUEST_TLB_SIZE) {
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1038  		/* UNDEFINED */
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1039  		kvm_debug("[%#lx] TLBR Index %#x out of range\n", pc, index);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1040  		index &= KVM_MIPS_GUEST_TLB_SIZE - 1;
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1041  	}
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1042  
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1043  	tlb = &vcpu->arch.guest_tlb[index];
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1044  	kvm_write_c0_guest_pagemask(cop0, tlb->tlb_mask);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1045  	kvm_write_c0_guest_entrylo0(cop0, tlb->tlb_lo[0]);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1046  	kvm_write_c0_guest_entrylo1(cop0, tlb->tlb_lo[1]);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1047  	kvm_mips_change_entryhi(vcpu, tlb->tlb_hi);
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1048  
dc44abd6aad224 arch/mips/kvm/emulate.c       James Hogan   2017-03-14  1049  	return EMULATE_DONE;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1050  }
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1051  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1052  /**
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1053   * kvm_mips_invalidate_guest_tlb() - Indicates a change in guest MMU map.
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1054   * @vcpu:	VCPU with changed mappings.
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1055   * @tlb:	TLB entry being removed.
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1056   *
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1057   * This is called to indicate a single change in guest MMU mappings, so that we
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1058   * can arrange TLB flushes on this and other CPUs.
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1059   */
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1060  static void kvm_mips_invalidate_guest_tlb(struct kvm_vcpu *vcpu,
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1061  					  struct kvm_mips_tlb *tlb)
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1062  {
c550d53934d821 arch/mips/kvm/emulate.c       James Hogan   2016-10-11  1063  	struct mm_struct *kern_mm = &vcpu->arch.guest_kernel_mm;
c550d53934d821 arch/mips/kvm/emulate.c       James Hogan   2016-10-11  1064  	struct mm_struct *user_mm = &vcpu->arch.guest_user_mm;
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1065  	int cpu, i;
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1066  	bool user;
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1067  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1068  	/* No need to flush for entries which are already invalid */
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1069  	if (!((tlb->tlb_lo[0] | tlb->tlb_lo[1]) & ENTRYLO_V))
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1070  		return;
aba8592950f1c6 arch/mips/kvm/emulate.c       James Hogan   2016-12-16  1071  	/* Don't touch host kernel page tables or TLB mappings */
aba8592950f1c6 arch/mips/kvm/emulate.c       James Hogan   2016-12-16  1072  	if ((unsigned long)tlb->tlb_hi > 0x7fffffff)
aba8592950f1c6 arch/mips/kvm/emulate.c       James Hogan   2016-12-16  1073  		return;
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1074  	/* User address space doesn't need flushing for KSeg2/3 changes */
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1075  	user = tlb->tlb_hi < KVM_GUEST_KSEG0;
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1076  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1077  	preempt_disable();
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1078  
aba8592950f1c6 arch/mips/kvm/emulate.c       James Hogan   2016-12-16  1079  	/* Invalidate page table entries */
aba8592950f1c6 arch/mips/kvm/emulate.c       James Hogan   2016-12-16  1080  	kvm_trap_emul_invalidate_gva(vcpu, tlb->tlb_hi & VPN2_MASK, user);
aba8592950f1c6 arch/mips/kvm/emulate.c       James Hogan   2016-12-16  1081  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1082  	/*
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1083  	 * Probe the shadow host TLB for the entry being overwritten, if one
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1084  	 * matches, invalidate it
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1085  	 */
57e3869cfaaec7 arch/mips/kvm/emulate.c       James Hogan   2016-10-08  1086  	kvm_mips_host_tlb_inv(vcpu, tlb->tlb_hi, user, true);
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1087  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1088  	/* Invalidate the whole ASID on other CPUs */
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1089  	cpu = smp_processor_id();
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1090  	for_each_possible_cpu(i) {
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1091  		if (i == cpu)
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1092  			continue;
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1093  		if (user)
0b317c389c6771 arch/mips/kvm/emulate.c       Paul Burton   2019-02-02  1094  			set_cpu_context(i, user_mm, 0);
0b317c389c6771 arch/mips/kvm/emulate.c       Paul Burton   2019-02-02  1095  		set_cpu_context(i, kern_mm, 0);
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1096  	}
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1097  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1098  	preempt_enable();
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1099  }
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1100  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1101  /* Write Guest TLB Entry @ Index */
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21 @1102  enum emulation_result kvm_mips_emul_tlbwi(struct kvm_vcpu *vcpu)
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1103  {
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1104  	struct mips_coproc *cop0 = vcpu->arch.cop0;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1105  	int index = kvm_read_c0_guest_index(cop0);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1106  	struct kvm_mips_tlb *tlb = NULL;
8cffd197485122 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1107  	unsigned long pc = vcpu->arch.pc;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1108  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1109  	if (index < 0 || index >= KVM_MIPS_GUEST_TLB_SIZE) {
6ad78a5c75c5bc arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26  1110  		kvm_debug("%s: illegal index: %d\n", __func__, index);
8cffd197485122 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1111  		kvm_debug("[%#lx] COP0_TLBWI [%d] (entryhi: %#lx, entrylo0: %#lx entrylo1: %#lx, mask: %#lx)\n",
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1112  			  pc, index, kvm_read_c0_guest_entryhi(cop0),
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1113  			  kvm_read_c0_guest_entrylo0(cop0),
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1114  			  kvm_read_c0_guest_entrylo1(cop0),
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1115  			  kvm_read_c0_guest_pagemask(cop0));
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1116  		index = (index & ~0x80000000) % KVM_MIPS_GUEST_TLB_SIZE;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1117  	}
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1118  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1119  	tlb = &vcpu->arch.guest_tlb[index];
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1120  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1121  	kvm_mips_invalidate_guest_tlb(vcpu, tlb);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1122  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1123  	tlb->tlb_mask = kvm_read_c0_guest_pagemask(cop0);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1124  	tlb->tlb_hi = kvm_read_c0_guest_entryhi(cop0);
9fbfb06a406577 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1125  	tlb->tlb_lo[0] = kvm_read_c0_guest_entrylo0(cop0);
9fbfb06a406577 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1126  	tlb->tlb_lo[1] = kvm_read_c0_guest_entrylo1(cop0);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1127  
8cffd197485122 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1128  	kvm_debug("[%#lx] COP0_TLBWI [%d] (entryhi: %#lx, entrylo0: %#lx entrylo1: %#lx, mask: %#lx)\n",
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1129  		  pc, index, kvm_read_c0_guest_entryhi(cop0),
d116e812f9026e arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26  1130  		  kvm_read_c0_guest_entrylo0(cop0),
d116e812f9026e arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26  1131  		  kvm_read_c0_guest_entrylo1(cop0),
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1132  		  kvm_read_c0_guest_pagemask(cop0));
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1133  
d98403a525fe16 arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26  1134  	return EMULATE_DONE;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1135  }
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1136  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1137  /* Write Guest TLB Entry @ Random Index */
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21 @1138  enum emulation_result kvm_mips_emul_tlbwr(struct kvm_vcpu *vcpu)
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1139  {
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1140  	struct mips_coproc *cop0 = vcpu->arch.cop0;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1141  	struct kvm_mips_tlb *tlb = NULL;
8cffd197485122 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1142  	unsigned long pc = vcpu->arch.pc;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1143  	int index;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1144  
e6331a321aafcc arch/mips/kvm/emulate.c       Paul Burton   2019-03-22  1145  	index = prandom_u32_max(KVM_MIPS_GUEST_TLB_SIZE);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1146  	tlb = &vcpu->arch.guest_tlb[index];
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1147  
91e4f1b6073dd6 arch/mips/kvm/emulate.c       James Hogan   2016-09-15  1148  	kvm_mips_invalidate_guest_tlb(vcpu, tlb);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1149  
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1150  	tlb->tlb_mask = kvm_read_c0_guest_pagemask(cop0);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1151  	tlb->tlb_hi = kvm_read_c0_guest_entryhi(cop0);
9fbfb06a406577 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1152  	tlb->tlb_lo[0] = kvm_read_c0_guest_entrylo0(cop0);
9fbfb06a406577 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1153  	tlb->tlb_lo[1] = kvm_read_c0_guest_entrylo1(cop0);
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1154  
8cffd197485122 arch/mips/kvm/emulate.c       James Hogan   2016-06-09  1155  	kvm_debug("[%#lx] COP0_TLBWR[%d] (entryhi: %#lx, entrylo0: %#lx entrylo1: %#lx)\n",
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1156  		  pc, index, kvm_read_c0_guest_entryhi(cop0),
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1157  		  kvm_read_c0_guest_entrylo0(cop0),
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1158  		  kvm_read_c0_guest_entrylo1(cop0));
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1159  
d98403a525fe16 arch/mips/kvm/kvm_mips_emul.c Dengcheng Zhu 2014-06-26  1160  	return EMULATE_DONE;
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1161  }
e685c689f3a84e arch/mips/kvm/kvm_mips_emul.c Sanjay Lal    2012-11-21  1162  

:::::: The code at line 946 was first introduced by commit
:::::: e685c689f3a84e5e24a5867afc5e7b5857efa3e4 KVM/MIPS32: Privileged instruction/target branch emulation.

:::::: TO: Sanjay Lal <sanjayl@kymasys.com>
:::::: CC: Ralf Baechle <ralf@linux-mips.org>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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