Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-04-08 Thread Bjorn Helgaas
On Sat, Apr 6, 2013 at 2:49 AM, James Bottomley wrote: > On Thu, 2013-04-04 at 12:06 -0600, Bjorn Helgaas wrote: >> On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock wrote: >> > -Reconsider whether supporting read/write on the resource files for IO port >> > regions like these makes any sense. Obv

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-04-06 Thread James Bottomley
On Thu, 2013-04-04 at 12:06 -0600, Bjorn Helgaas wrote: > On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock wrote: > > On 03/20/2013 10:35 PM, Myron Stowe wrote: > >> > >> Sysfs includes entries to memory regions that back a PCI device's BARs. > >> The pci-sysfs entries backing I/O Port BARs can be

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-04-04 Thread Bjorn Helgaas
On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock wrote: > On 03/20/2013 10:35 PM, Myron Stowe wrote: >> >> Sysfs includes entries to memory regions that back a PCI device's BARs. >> The pci-sysfs entries backing I/O Port BARs can be accessed by userspace, >> providing direct access to the device's

RE: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-03-22 Thread Elliott, Robert (Server Storage)
> On Fri, Mar 22, 2013 at 9:55 AM, Robert Hancock > wrote: > > On Fri, Mar 22, 2013 at 9:39 AM, Myron Stowe > wrote: > >> On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock > wrote: > >>> On 03/20/2013 10:35 PM, Myron Stowe wrote: > > Sysfs includes entries to memory regions that back a

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-03-22 Thread Myron Stowe
On Fri, Mar 22, 2013 at 9:55 AM, Robert Hancock wrote: > On Fri, Mar 22, 2013 at 9:39 AM, Myron Stowe wrote: >> On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock wrote: >>> On 03/20/2013 10:35 PM, Myron Stowe wrote: Sysfs includes entries to memory regions that back a PCI device's BARs.

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-03-22 Thread Robert Hancock
On Fri, Mar 22, 2013 at 9:39 AM, Myron Stowe wrote: > On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock wrote: >> On 03/20/2013 10:35 PM, Myron Stowe wrote: >>> >>> Sysfs includes entries to memory regions that back a PCI device's BARs. >>> The pci-sysfs entries backing I/O Port BARs can be accesse

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-03-22 Thread Myron Stowe
On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock wrote: > On 03/20/2013 10:35 PM, Myron Stowe wrote: >> >> Sysfs includes entries to memory regions that back a PCI device's BARs. >> The pci-sysfs entries backing I/O Port BARs can be accessed by userspace, >> providing direct access to the device's

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-03-21 Thread Greg KH
On Thu, Mar 21, 2013 at 06:51:31PM -0600, Robert Hancock wrote: > On 03/20/2013 10:35 PM, Myron Stowe wrote: > >Sysfs includes entries to memory regions that back a PCI device's BARs. > >The pci-sysfs entries backing I/O Port BARs can be accessed by userspace, > >providing direct access to the devi

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-03-21 Thread Robert Hancock
On 03/20/2013 10:35 PM, Myron Stowe wrote: Sysfs includes entries to memory regions that back a PCI device's BARs. The pci-sysfs entries backing I/O Port BARs can be accessed by userspace, providing direct access to the device's registers. File permissions prevent random users from accessing the

[PATCH 2/3] PCI: Handle device quirks when accessing sysfs resource entries

2013-03-20 Thread Myron Stowe
Sysfs includes entries to memory regions that back a PCI device's BARs. The pci-sysfs entries backing I/O Port BARs can be accessed by userspace, providing direct access to the device's registers. File permissions prevent random users from accessing the device's registers through these files, but