linux-kernel - Re: [GIT PULL] Please pull rdma.git

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Message-ID: <20190429180055.GX6705@mtr-leonro.mtl.com>
Date:   Mon, 29 Apr 2019 21:00:55 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Doug Ledford <dledford@...hat.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-rdma <linux-rdma@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "Gunthorpe, Jason" <jgg@...pe.ca>
Subject: Re: [GIT PULL] Please pull rdma.git

On Mon, Apr 29, 2019 at 01:13:01PM -0400, Doug Ledford wrote:
> On Mon, 2019-04-29 at 09:48 -0700, Linus Torvalds wrote:
> > On Mon, Apr 29, 2019 at 9:29 AM Doug Ledford <dledford@...hat.com> wrote:
> > >
> > >  drivers/infiniband/core/uverbs_main.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > This trivial one-liner is actually incorrect.
> >
> > It should use 'vmf->address', because the point of the ZERO_PAGE
> > argument is to pick the page with the right virtual address alias for
> > broken architectures that need those kinds.
> >
> > I'm actually surprised s390 wants it, usually it's just MIPS that has
> > the horribly broken virtual address translation stuff. But it looks
> > like for s390 it's at least only a performance issue (ie it causes
> > some aliases in L1 that cause cacheline ping-pong rather than anything
> > else).
>
> That's what I get for listening to Jason ;-)
>
> Well, since you have just essentially re-written the patch to be
> correct, you are now the developer of origin.  Do you want to commit the
> fix directly or shall I respin it for you to pull?

Linus already committed it.

The whole breakage is mystery for me, the patch which introduced
breakage, got successful build report from 0-build.

Thanks

>
> --
> Doug Ledford <dledford@...hat.com>
>     GPG KeyID: B826A3330E572FDD
>     Key fingerprint = AE6B 1BDA 122B 23B4 265B  1274 B826 A333 0E57 2FDD



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