[kvm:queue 134/252] arch/arm64/kvm/mmu.c:1114:9-10: WARNING: return of 0/1 in function 'kvm_age_gfn' with return type bool

[kvm:queue 134/252] arch/arm64/kvm/mmu.c:1114:9-10: WARNING: return of 0/1 in function 'kvm_age_gfn' with return type bool

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
head:   9f242010c3b46e63bc62f08fff42cef992d3801b
commit: cd4c7183522817087278b3e000b8a888f9f91b5c [134/252] KVM: arm64: Convert to the gfn-based MMU notifier callbacks
config: arm64-randconfig-c023-20210426 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0

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


cocci warnings: (new ones prefixed by >>)
>> arch/arm64/kvm/mmu.c:1114:9-10: WARNING: return of 0/1 in function 'kvm_age_gfn' with return type bool
>> arch/arm64/kvm/mmu.c:1084:9-10: WARNING: return of 0/1 in function 'kvm_set_spte_gfn' with return type bool
>> arch/arm64/kvm/mmu.c:1127:9-10: WARNING: return of 0/1 in function 'kvm_test_age_gfn' with return type bool
>> arch/arm64/kvm/mmu.c:1070:9-10: WARNING: return of 0/1 in function 'kvm_unmap_gfn_range' with return type bool

Please review and possibly fold the followup patch.

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

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[PATCH] KVM: arm64: fix boolreturn.cocci warnings

[kernel test robot]

From: kernel test robot <lkp@intel.com>

arch/arm64/kvm/mmu.c:1114:9-10: WARNING: return of 0/1 in function 'kvm_age_gfn' with return type bool
arch/arm64/kvm/mmu.c:1084:9-10: WARNING: return of 0/1 in function 'kvm_set_spte_gfn' with return type bool
arch/arm64/kvm/mmu.c:1127:9-10: WARNING: return of 0/1 in function 'kvm_test_age_gfn' with return type bool
arch/arm64/kvm/mmu.c:1070:9-10: WARNING: return of 0/1 in function 'kvm_unmap_gfn_range' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci

Fixes: cd4c71835228 ("KVM: arm64: Convert to the gfn-based MMU notifier callbacks")
CC: Sean Christopherson <seanjc@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
---

tree:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
head:   9f242010c3b46e63bc62f08fff42cef992d3801b
commit: cd4c7183522817087278b3e000b8a888f9f91b5c [134/252] KVM: arm64: Convert to the gfn-based MMU notifier callbacks

 mmu.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -1067,13 +1067,13 @@ out_unlock:
 bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range)
 {
 	if (!kvm->arch.mmu.pgt)
-		return 0;
+		return false;
 
 	__unmap_stage2_range(&kvm->arch.mmu, range->start << PAGE_SHIFT,
 			     (range->end - range->start) << PAGE_SHIFT,
 			     range->may_block);
 
-	return 0;
+	return false;
 }
 
 bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
@@ -1081,7 +1081,7 @@ bool kvm_set_spte_gfn(struct kvm *kvm, s
 	kvm_pfn_t pfn = pte_pfn(range->pte);
 
 	if (!kvm->arch.mmu.pgt)
-		return 0;
+		return false;
 
 	WARN_ON(range->end - range->start != 1);
 
@@ -1101,7 +1101,7 @@ bool kvm_set_spte_gfn(struct kvm *kvm, s
 			       PAGE_SIZE, __pfn_to_phys(pfn),
 			       KVM_PGTABLE_PROT_R, NULL);
 
-	return 0;
+	return false;
 }
 
 bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
@@ -1111,7 +1111,7 @@ bool kvm_age_gfn(struct kvm *kvm, struct
 	pte_t pte;
 
 	if (!kvm->arch.mmu.pgt)
-		return 0;
+		return false;
 
 	WARN_ON(size != PAGE_SIZE && size != PMD_SIZE && size != PUD_SIZE);
 
@@ -1124,7 +1124,7 @@ bool kvm_age_gfn(struct kvm *kvm, struct
 bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range)
 {
 	if (!kvm->arch.mmu.pgt)
-		return 0;
+		return false;
 
 	return kvm_pgtable_stage2_is_young(kvm->arch.mmu.pgt,
 					   range->start << PAGE_SHIFT);

Re: [PATCH] KVM: arm64: fix boolreturn.cocci warnings

[Sean Christopherson]

On Tue, Apr 27, 2021, kernel test robot wrote:
> From: kernel test robot <lkp@intel.com>
> 
> arch/arm64/kvm/mmu.c:1114:9-10: WARNING: return of 0/1 in function 'kvm_age_gfn' with return type bool
> arch/arm64/kvm/mmu.c:1084:9-10: WARNING: return of 0/1 in function 'kvm_set_spte_gfn' with return type bool
> arch/arm64/kvm/mmu.c:1127:9-10: WARNING: return of 0/1 in function 'kvm_test_age_gfn' with return type bool
> arch/arm64/kvm/mmu.c:1070:9-10: WARNING: return of 0/1 in function 'kvm_unmap_gfn_range' with return type bool
> 
>  Return statements in functions returning bool should use
>  true/false instead of 1/0.
> Generated by: scripts/coccinelle/misc/boolreturn.cocci
> 
> Fixes: cd4c71835228 ("KVM: arm64: Convert to the gfn-based MMU notifier callbacks")
> CC: Sean Christopherson <seanjc@google.com>
> Reported-by: kernel test robot <lkp@intel.com>
> Signed-off-by: kernel test robot <lkp@intel.com>
> ---

Reviewed-by: Sean Christopherson <seanjc@google.com>

Re: [PATCH] KVM: arm64: fix boolreturn.cocci warnings

[Marc Zyngier]

On Tue, 27 Apr 2021 06:33:57 +0800, kernel test robot wrote:
> arch/arm64/kvm/mmu.c:1114:9-10: WARNING: return of 0/1 in function 'kvm_age_gfn' with return type bool
> arch/arm64/kvm/mmu.c:1084:9-10: WARNING: return of 0/1 in function 'kvm_set_spte_gfn' with return type bool
> arch/arm64/kvm/mmu.c:1127:9-10: WARNING: return of 0/1 in function 'kvm_test_age_gfn' with return type bool
> arch/arm64/kvm/mmu.c:1070:9-10: WARNING: return of 0/1 in function 'kvm_unmap_gfn_range' with return type bool
> 
>  Return statements in functions returning bool should use
>  true/false instead of 1/0.
> Generated by: scripts/coccinelle/misc/boolreturn.cocci

Applied to fixes, thanks!

[1/1] KVM: arm64: fix boolreturn.cocci warnings
      commit: 9ff40461a0e9684d8cb60058938004ddc16fb536

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.