Re: [RFC PATCH v1 1/2] virt: memctl: control guest physical memory properties

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On Mon, May 13, 2024 at 07:03:00PM -0700, Yuanchu Xie wrote:
> +/*
> + * Used for internal kernel memctl calls, i.e. to better support kernel stacks,
> + * or to efficiently zero hugetlb pages.
> + */
> +long memctl_vmm_call(__u64 func_code, __u64 addr, __u64 length, __u64 arg,
> +		     struct memctl_buf *buf)
> +{
> +	buf->call.func_code = func_code;
> +	buf->call.addr = addr;
> +	buf->call.length = length;
> +	buf->call.arg = arg;
> +
> +	return __memctl_vmm_call(buf);
> +}
> +EXPORT_SYMBOL(memctl_vmm_call);

You export something that is never actually called, which implies that
this is not tested at all (i.e. it is dead code.)  Please remove.

Also, why not EXPORT_SYMBOL_GPL()?   (I have to ask, sorry.)

thanks,

greg k-h




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