Re: [GIT PULL] KVM fixes for Linux 6.11-rc7

From: Linus Torvalds
Date: Fri Sep 06 2024 - 18:38:57 EST


On Fri, 6 Sept 2024 at 08:45, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
> - Specialize return value of KVM_CHECK_EXTENSION(KVM_CAP_READONLY_MEM),
> based on VM type

Grr. This actually causes a build warning with clang, but I didn't
notice in my "between pulls" build check, because that is with gcc.

So now it's merged with this error:

arch/x86/kvm/x86.c:4819:2: error: unannotated fall-through between
switch labels [-Werror,-Wimplicit-fallthrough]

and I'm actually surprised that gcc didn't warn about this too.

We definitely enable -Wimplicit-fallthrough on gcc too, but apparently
it's not functional: falling through to a "break" statement seems to
not warn with gcc. Which is nonsensical, but whatever.

Linus