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Date:   Mon, 29 Apr 2019 16:25:18 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Michal Kubecek <mkubecek@...e.cz>
Cc:     Jason Gunthorpe <jgg@...lanox.com>,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: v5.1-rc7 fails to build on s390x (Re: Linux 5.1-rc7)

On Mon, Apr 29, 2019 at 07:21:36AM +0200, Michal Kubecek wrote:
> v5.1-rc7 fails to build on s390x due to
> 
> 		vmf->page = ZERO_PAGE(vmf->vm_start);
> 
> from commit 67f269b37f9b ("RDMA/ucontext: Fix regression with
> disassociate"). This is not a problem on x86_64 where ZERO_PAGE()
> doesn't use its argument but s390 version does.
> 
> I suppose the line should rather read
> 
> 		vmf->page = ZERO_PAGE(vmf->vma->vm_start);
> 
> but I'm just guessing.

I belive it has to be

		vmf->page = ZERO_PAGE(vmf->address);

-- 
 Kirill A. Shutemov

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