Re: [PATCH] KVM: arm64: Drop 'const' from argument of vq_present()

From: Viresh Kumar
Date: Tue Jun 04 2019 - 04:59:44 EST


On 04-06-19, 09:43, Catalin Marinas wrote:
> On Tue, Jun 04, 2019 at 10:13:19AM +0530, Viresh Kumar wrote:
> > We currently get following compilation warning:
> >
> > arch/arm64/kvm/guest.c: In function 'set_sve_vls':
> > arch/arm64/kvm/guest.c:262:18: warning: passing argument 1 of 'vq_present' from incompatible pointer type
> > arch/arm64/kvm/guest.c:212:13: note: expected 'const u64 (* const)[8]' but argument is of type 'u64 (*)[8]'
>
> Since the vq_present() function does not modify the vqs array, I don't
> understand why this warning. Compiler bug?

Probably yes. Also marking array argument to functions as const is a
right thing to do, to declare that the function wouldn't change the
array values.

I tried a recent toolchain and this doesn't happen anymore.

Sorry for the noise.

--
viresh