linux-kernel - Re: [PATCH] kvm: fix compilation on s390

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Message-Id: <d34269ea-054f-4dee-4485-3121cb3255c1@de.ibm.com>
Date:   Fri, 24 May 2019 21:54:18 +0200
From:   Christian Borntraeger <borntraeger@...ibm.com>
To:     Paolo Bonzini <pbonzini@...hat.com>, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org
Cc:     mkubecek@...e.cz
Subject: Re: [PATCH] kvm: fix compilation on s390

On which kernel tree is this broken? kvm/queue has 

#ifdef CONFIG_ZONE_DEVICE
around that.

On 24.05.19 21:25, Paolo Bonzini wrote:
> s390 does not have memremap, even though in this particular case it
> would be useful.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> ---
>  virt/kvm/kvm_main.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 1fadfb9cf36e..134ec0283a8a 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -1761,8 +1761,10 @@ static int __kvm_map_gfn(struct kvm_memory_slot *slot, gfn_t gfn,
>  	if (pfn_valid(pfn)) {
>  		page = pfn_to_page(pfn);
>  		hva = kmap(page);
> +#ifdef CONFIG_HAS_IOMEM
>  	} else {
>  		hva = memremap(pfn_to_hpa(pfn), PAGE_SIZE, MEMREMAP_WB);
> +#endif
>  	}
> 
>  	if (!hva)
>