linux-kernel - arch/powerpc/kvm/book3s_32_mmu.c:241:21: error: this statement may fall through [-Werror=implicit-fallthrough=]

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Date:   Mon, 29 Jul 2019 10:32:17 +0200
From:   Paul Menzel <pmenzel@...gen.mpg.de>
To:     Paul Mackerras <paulus@...ba.org>
Cc:     kvm-ppc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: arch/powerpc/kvm/book3s_32_mmu.c:241:21: error: this statement may
 fall through [-Werror=implicit-fallthrough=]

Dear Linux folks,


Building Linux 5.3-rc2 with the attached configuration on ppc64le fails with
the error below. Linux 5.3-rc1 built fine, so this looks like a regression.

```
arch/powerpc/kvm/book3s_32_mmu.c: In function ‘kvmppc_mmu_book3s_32_xlate_pte’:
arch/powerpc/kvm/book3s_32_mmu.c:241:21: error: this statement may fall through [-Werror=implicit-fallthrough=]
      pte->may_write = true;
      ~~~~~~~~~~~~~~~^~~~~~
arch/powerpc/kvm/book3s_32_mmu.c:242:5: note: here
     case 3:
     ^~~~
```


Kind regards,

Paul

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