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.hansen@linux.intel.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Stefan Bader" <stefan.bader@canonical.com>,
konrad.wilk@oracle.com, ville.syrjala@linux.intel.com,
david.vrabel@citrix.com, jbeulich@suse.com,
"Roger Pau Monné" <roger.pau@citrix.com>,
linux-fbdev@vger.kernel.org, xen-devel@lists.xensource.com
Subject: Re: [PATCH v4 2/2] IB/qib: use arch_phys_wc_add()
Date: Wed, 22 Apr 2015 09:54:38 -0400 [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 13:55 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-21 21:50 [PATCH v4 0/2] qib: few changes to bury MTRR use Luis R. Rodriguez
2015-04-21 21:50 ` [PATCH v4 1/2] IB/qib: add acounting for MTRR Luis R. Rodriguez
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]
2015-04-22 15:33 ` Luis R. Rodriguez
2015-04-22 16:57 ` Doug Ledford
2015-04-22 17:37 ` Luis R. Rodriguez
2015-04-22 17:48 ` Doug Ledford
2015-04-22 18:32 ` Luis R. Rodriguez
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