Messages in this thread | | | Date | Mon, 15 Nov 2021 21:49:05 +0100 | From | Peter Zijlstra <> | Subject | Re: [PATCH] KVM: x86: fix cocci warnings |
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On Mon, Nov 15, 2021 at 06:06:08PM +0100, Paolo Bonzini wrote: > On 11/15/21 12:43, Peter Zijlstra wrote: > > On Sun, Nov 14, 2021 at 10:13:12PM +0530, Vihas Mak wrote: > > > change 0 to false and 1 to true to fix following cocci warnings: > > > > > > arch/x86/kvm/mmu/mmu.c:1485:9-10: WARNING: return of 0/1 in function 'kvm_set_pte_rmapp' with return type bool > > > arch/x86/kvm/mmu/mmu.c:1636:10-11: WARNING: return of 0/1 in function 'kvm_test_age_rmapp' with return type bool > > > > That script should be deleted, it's absolute garbage. > > > > Only a Sith deals in absolutes.
Is that a star-wars thingy?
In C 0 is a valid way to spell false, equally, any non-0 value is a valid way to spell true. Why would this rate a warn?
In fact, when casting _Bool to integer, you get 0 and 1. When looking at the memory content of the _Bool variable, you'll get 0 and 1. But we're not allowed to write 0 and 1?
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