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

2013-04-08 Thread Bjorn Helgaas
On Sat, Apr 6, 2013 at 2:49 AM, James Bottomley james.bottom...@hansenpartnership.com wrote: On Thu, 2013-04-04 at 12:06 -0600, Bjorn Helgaas wrote: On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock hancock...@gmail.com wrote: -Reconsider whether supporting read/write on the resource files for

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resourceN 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 hancock...@gmail.com 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

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

2013-04-04 Thread Bjorn Helgaas
On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock hancock...@gmail.com 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

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

2013-03-22 Thread Myron Stowe
On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock hancock...@gmail.com 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

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

2013-03-22 Thread Robert Hancock
On Fri, Mar 22, 2013 at 9:39 AM, Myron Stowe myron.st...@gmail.com wrote: On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock hancock...@gmail.com 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

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

2013-03-22 Thread Myron Stowe
On Fri, Mar 22, 2013 at 9:55 AM, Robert Hancock hancock...@gmail.com wrote: On Fri, Mar 22, 2013 at 9:39 AM, Myron Stowe myron.st...@gmail.com wrote: On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock hancock...@gmail.com wrote: On 03/20/2013 10:35 PM, Myron Stowe wrote: Sysfs includes entries

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

2013-03-22 Thread Elliott, Robert (Server Storage)
On Fri, Mar 22, 2013 at 9:55 AM, Robert Hancock hancock...@gmail.com wrote: On Fri, Mar 22, 2013 at 9:39 AM, Myron Stowe myron.st...@gmail.com wrote: On Thu, Mar 21, 2013 at 6:51 PM, Robert Hancock hancock...@gmail.com wrote: On 03/20/2013 10:35 PM, Myron Stowe wrote: Sysfs

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

Re: [PATCH 2/3] PCI: Handle device quirks when accessing sysfs resourceN 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 device's

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