From: Doug Ledford <dledford@redhat.com>
To: "Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Cc: infinipath@intel.com, roland@kernel.org, sean.hefty@intel.com,
hal.rosenstock@gmail.com, linux-rdma@vger.kernel.org,
luto@amacapital.net, mst@redhat.com,
linux-kernel@vger.kernel.org, cocci@systeme.lip6.fr,
"Luis R. Rodriguez" <mcgrof@suse.com>,
Toshi Kani <toshi.kani@hp.com>,
Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>,
Mike Marciniszyn <mike.marciniszyn@intel.com>,
Roland Dreier <roland@purestorage.com>,
Dennis Dalessandro <dennis.dalessandro@intel.com>,
Suresh Siddha <sbsiddha@gmail.com>, Ingo Molnar <mingo@elte.hu>,
Thomas Gleixner <tglx@linutronix.de>,
Juergen Gross <jgross@suse.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Dave Airlie <airlied@redhat.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Antonino Daplas <adaplas@gmail.com>,
Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>, Dave Hansen <dave>
Subject: Re: [PATCH v4 2/2] IB/qib: use arch_phys_wc_add()
Date: Wed, 22 Apr 2015 13:54:38 +0000 [thread overview]
Message-ID: <1429710878.45956.94.camel@redhat.com> (raw)
In-Reply-To: <1429653035-19424-3-git-send-email-mcgrof@do-not-panic.com>
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On Tue, 2015-04-21 at 14:50 -0700, Luis R. Rodriguez wrote:
This:
> + /* MTRR was used if this is non-zero */
> + if (!dd->wc_cookie)
> vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
And this:
> + dd->wc_cookie = arch_phys_wc_add(pioaddr, piolen);
> + if (dd->wc_cookie < 0)
> + ret = -EINVAL;
don't agree on what wc_cookie will be on error.
--
Doug Ledford <dledford@redhat.com>
GPG KeyID: 0E572FDD
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next prev parent reply other threads:[~2015-04-22 13:54 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1429653035-19424-1-git-send-email-mcgrof@do-not-panic.com>
2015-04-21 21:50 ` [PATCH v4 1/2] IB/qib: add acounting for MTRR Luis R. Rodriguez
[not found] ` <1429653035-19424-2-git-send-email-mcgrof-3uybbJdB1yH774rrrx3eTA@public.gmane.org>
2015-04-22 13:44 ` Doug Ledford
2015-04-22 15:28 ` Luis R. Rodriguez
2015-04-21 21:50 ` [PATCH v4 2/2] IB/qib: use arch_phys_wc_add() Luis R. Rodriguez
2015-04-21 22:17 ` Jason Gunthorpe
2015-04-22 13:54 ` Doug Ledford [this message]
[not found] ` <1429710878.45956.94.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-04-22 15:33 ` Luis R. Rodriguez
[not found] ` <20150422153348.GD5622-B4tOwbsTzaBolqkO4TVVkw@public.gmane.org>
2015-04-22 16:57 ` Doug Ledford
2015-04-22 17:37 ` Luis R. Rodriguez
2015-04-22 17:48 ` Doug Ledford
[not found] ` <1429724907.45956.165.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2015-04-22 18:32 ` Luis R. Rodriguez
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