Re: [PATCH v2 05/23] arm64: use asm-generic/mmu_context.h for no-op implementations

From: kernel test robot
Date: Wed Aug 26 2020 - 14:58:35 EST

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In reply to: Nicholas Piggin: "Re: [PATCH v2 05/23] arm64: use asm-generic/mmu_context.h for no-op implementations"
Next in thread: kernel test robot: "Re: [PATCH v2 05/23] arm64: use asm-generic/mmu_context.h for no-op implementations"
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Hi Nicholas,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.9-rc2 next-20200826]
[cannot apply to sparc/master asm-generic/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Nicholas-Piggin/Use-asm-generic-for-mmu_context-no-op-functions/20200826-225632
base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2ac69819ba9e3d8d550bb5d2d2df74848e556812
config: arm64-randconfig-r002-20200826 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 7cfcecece0e0430937cf529ce74d3a071a4dedc6)
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 arm64 cross compiling tool for clang build
# apt-get install binutils-aarch64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64

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

All errors (new ones prefixed by >>):

In file included from arch/arm64/kernel/process.c:54:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/kernel/process.c:260:6: warning: no previous prototype for function '__show_regs' [-Wmissing-prototypes]
void __show_regs(struct pt_regs *regs)
^
arch/arm64/kernel/process.c:260:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __show_regs(struct pt_regs *regs)
^
static
arch/arm64/kernel/process.c:352:5: warning: no previous prototype for function 'arch_dup_task_struct' [-Wmissing-prototypes]
int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
^
arch/arm64/kernel/process.c:352:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
^
static
arch/arm64/kernel/process.c:554:41: warning: no previous prototype for function '__switch_to' [-Wmissing-prototypes]
__notrace_funcgraph struct task_struct *__switch_to(struct task_struct *prev,
^
arch/arm64/kernel/process.c:554:21: note: declare 'static' if the function is not intended to be used outside of this translation unit
__notrace_funcgraph struct task_struct *__switch_to(struct task_struct *prev,
^
static
arch/arm64/kernel/process.c:692:25: warning: no previous prototype for function 'arm64_preempt_schedule_irq' [-Wmissing-prototypes]
asmlinkage void __sched arm64_preempt_schedule_irq(void)
^
arch/arm64/kernel/process.c:692:12: note: declare 'static' if the function is not intended to be used outside of this translation unit
asmlinkage void __sched arm64_preempt_schedule_irq(void)
^
static
4 warnings and 1 error generated.
--
In file included from arch/arm64/kernel/setup.c:50:
In file included from arch/arm64/include/asm/efi.h:10:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
1 error generated.
--
In file included from arch/arm64/kernel/cpu_errata.c:111:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/kernel/cpu_errata.c:295:13: warning: no previous prototype for function 'arm64_update_smccc_conduit' [-Wmissing-prototypes]
void __init arm64_update_smccc_conduit(struct alt_instr *alt,
^
arch/arm64/kernel/cpu_errata.c:295:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __init arm64_update_smccc_conduit(struct alt_instr *alt,
^
static
arch/arm64/kernel/cpu_errata.c:317:13: warning: no previous prototype for function 'arm64_enable_wa2_handling' [-Wmissing-prototypes]
void __init arm64_enable_wa2_handling(struct alt_instr *alt,
^
arch/arm64/kernel/cpu_errata.c:317:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __init arm64_enable_wa2_handling(struct alt_instr *alt,
^
static
arch/arm64/kernel/cpu_errata.c:747:3: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
ERRATA_MIDR_REV_RANGE(MIDR_CORTEX_A53, 0, 0, 4),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:506:2: note: expanded from macro 'ERRATA_MIDR_REV_RANGE'
ERRATA_MIDR_RANGE(m, var, r_min, var, r_max)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:498:2: note: expanded from macro 'ERRATA_MIDR_RANGE'
CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:486:13: note: expanded from macro 'CAP_MIDR_RANGE'
.matches = is_affected_midr_range, \
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:746:14: note: previous initialization is here
.matches = is_affected_midr_range,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:753:3: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
ERRATA_MIDR_REV(MIDR_BRAHMA_B53, 0, 0),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:510:2: note: expanded from macro 'ERRATA_MIDR_REV'
ERRATA_MIDR_RANGE(model, var, rev, var, rev)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:498:2: note: expanded from macro 'ERRATA_MIDR_RANGE'
CAP_MIDR_RANGE(model, v_min, r_min, v_max, r_max)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:486:13: note: expanded from macro 'CAP_MIDR_RANGE'
.matches = is_affected_midr_range, \
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:752:14: note: previous initialization is here
.matches = is_affected_midr_range,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:913:11: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
.type = (ARM64_CPUCAP_SCOPE_LOCAL_CPU |
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:912:3: note: previous initialization is here
ERRATA_MIDR_RANGE_LIST(erratum_1418040_list),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/cpu_errata.c:519:10: note: expanded from macro 'ERRATA_MIDR_RANGE_LIST'
.type = ARM64_CPUCAP_LOCAL_CPU_ERRATUM, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/include/asm/cpufeature.h:258:2: note: expanded from macro 'ARM64_CPUCAP_LOCAL_CPU_ERRATUM'
(ARM64_CPUCAP_SCOPE_LOCAL_CPU | ARM64_CPUCAP_OPTIONAL_FOR_LATE_CPU)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 warnings and 1 error generated.
--
In file included from arch/arm64/kernel/smp.c:43:
In file included from arch/arm64/include/asm/kvm_mmu.h:90:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/kernel/smp.c:842:6: warning: no previous prototype for function 'arch_irq_work_raise' [-Wmissing-prototypes]
void arch_irq_work_raise(void)
^
arch/arm64/kernel/smp.c:842:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void arch_irq_work_raise(void)
^
static
arch/arm64/kernel/smp.c:863:6: warning: no previous prototype for function 'panic_smp_self_stop' [-Wmissing-prototypes]
void panic_smp_self_stop(void)
^
arch/arm64/kernel/smp.c:863:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void panic_smp_self_stop(void)
^
static
arch/arm64/kernel/smp.c:1067:5: warning: no previous prototype for function 'setup_profiling_timer' [-Wmissing-prototypes]
int setup_profiling_timer(unsigned int multiplier)
^
arch/arm64/kernel/smp.c:1067:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int setup_profiling_timer(unsigned int multiplier)
^
static
3 warnings and 1 error generated.
--
In file included from arch/arm64/kernel/suspend.c:14:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/kernel/suspend.c:32:13: warning: no previous prototype for function 'cpu_suspend_set_dbg_restorer' [-Wmissing-prototypes]
void __init cpu_suspend_set_dbg_restorer(int (*hw_bp_restore)(unsigned int))
^
arch/arm64/kernel/suspend.c:32:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void __init cpu_suspend_set_dbg_restorer(int (*hw_bp_restore)(unsigned int))
^
static
1 warning and 1 error generated.
--
In file included from arch/arm64/kernel/machine_kexec.c:21:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/kernel/machine_kexec.c:250:6: warning: no previous prototype for function 'machine_crash_shutdown' [-Wmissing-prototypes]
void machine_crash_shutdown(struct pt_regs *regs)
^
arch/arm64/kernel/machine_kexec.c:250:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void machine_crash_shutdown(struct pt_regs *regs)
^
static
1 warning and 1 error generated.
--
In file included from arch/arm64/mm/mmu.c:35:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/mm/mmu.c:1135:6: warning: no previous prototype for function 'vmemmap_free' [-Wmissing-prototypes]
void vmemmap_free(unsigned long start, unsigned long end,
^
arch/arm64/mm/mmu.c:1135:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void vmemmap_free(unsigned long start, unsigned long end,
^
static
1 warning and 1 error generated.
--
In file included from arch/arm64/mm/context.c:16:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/mm/context.c:201:6: error: conflicting types for 'check_and_switch_context'
void check_and_switch_context(struct mm_struct *mm)
^
arch/arm64/include/asm/mmu_context.h:177:6: note: previous declaration is here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
2 errors generated.
--
In file included from arch/arm64/kvm/va_layout.c:13:
In file included from arch/arm64/include/asm/kvm_mmu.h:90:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/kvm/va_layout.c:137:6: warning: no previous prototype for function 'kvm_patch_vector_branch' [-Wmissing-prototypes]
void kvm_patch_vector_branch(struct alt_instr *alt,
^
arch/arm64/kvm/va_layout.c:137:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void kvm_patch_vector_branch(struct alt_instr *alt,
^
static
1 warning and 1 error generated.
--
In file included from arch/arm64/kvm/handle_exit.c:19:
In file included from arch/arm64/include/asm/kvm_mmu.h:90:
>> arch/arm64/include/asm/mmu_context.h:226:31: error: too few arguments to function call, expected 2, have 1
check_and_switch_context(next);
~~~~~~~~~~~~~~~~~~~~~~~~ ^
arch/arm64/include/asm/mmu_context.h:177:6: note: 'check_and_switch_context' declared here
void check_and_switch_context(struct mm_struct *mm, unsigned int cpu);
^
arch/arm64/kvm/handle_exit.c:178:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_WFx] = kvm_handle_wfx,
^~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:179:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_CP15_32] = kvm_handle_cp15_32,
^~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:180:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_CP15_64] = kvm_handle_cp15_64,
^~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:181:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_CP14_MR] = kvm_handle_cp14_32,
^~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:182:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_CP14_LS] = kvm_handle_cp14_load_store,
^~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:183:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_CP14_64] = kvm_handle_cp14_64,
^~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:184:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_HVC32] = handle_hvc,
^~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:185:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SMC32] = handle_smc,
^~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:186:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_HVC64] = handle_hvc,
^~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:187:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SMC64] = handle_smc,
^~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:188:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SYS64] = kvm_handle_sys_reg,
^~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:189:21: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SVE] = handle_sve,
^~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:190:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_IABT_LOW] = kvm_handle_guest_abort,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:191:26: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_DABT_LOW] = kvm_handle_guest_abort,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:192:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_SOFTSTP_LOW]= kvm_handle_guest_debug,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,
^~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:193:28: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides]
[ESR_ELx_EC_WATCHPT_LOW]= kvm_handle_guest_debug,
^~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kvm/handle_exit.c:177:27: note: previous initialization is here
[0 ... ESR_ELx_EC_MAX] = kvm_handle_unknown_ec,

# https://github.com/0day-ci/linux/commit/b7168fc5046fd65223bdc51ef411e157939433b6
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Nicholas-Piggin/Use-asm-generic-for-mmu_context-no-op-functions/20200826-225632
git checkout b7168fc5046fd65223bdc51ef411e157939433b6
vim +226 arch/arm64/include/asm/mmu_context.h

d96cc49bff5a77 Will Deacon 2017-12-06 214
39bc88e5e38e9b Catalin Marinas 2016-09-02 215 static inline void __switch_mm(struct mm_struct *next)
39bc88e5e38e9b Catalin Marinas 2016-09-02 216 {
e53f21bce4d35a Catalin Marinas 2015-03-23 217 /*
e53f21bce4d35a Catalin Marinas 2015-03-23 218 * init_mm.pgd does not contain any user mappings and it is always
e53f21bce4d35a Catalin Marinas 2015-03-23 219 * active for kernel addresses in TTBR1. Just set the reserved TTBR0.
e53f21bce4d35a Catalin Marinas 2015-03-23 220 */
e53f21bce4d35a Catalin Marinas 2015-03-23 221 if (next == &init_mm) {
e53f21bce4d35a Catalin Marinas 2015-03-23 222 cpu_set_reserved_ttbr0();
e53f21bce4d35a Catalin Marinas 2015-03-23 223 return;
e53f21bce4d35a Catalin Marinas 2015-03-23 224 }
e53f21bce4d35a Catalin Marinas 2015-03-23 225
c4885bbb3afee8 Pingfan Liu 2020-07-10 @226 check_and_switch_context(next);
b3901d54dc4f73 Catalin Marinas 2012-03-05 227 }
b3901d54dc4f73 Catalin Marinas 2012-03-05 228

---
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