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SubjectRe: [RFC] [PATCH] sysfs support for Xen attributes
Anthony Liguori wrote:
> Arjan van de Ven wrote:
>
>> On Thu, 2006-01-12 at 12:53 -0600, Anthony Liguori wrote:
>>
>>
>>> We wish to make management hypercalls as the root user in userspace
>>> which means we have to go through the kernel. Currently, we do this
>>> by having /proc/xen/privcmd accept an ioctl() that takes a structure
>>> that describe the register arguments. The kernel interface allows us
>>> to control who in userspace can execute hypercalls.
>>>
>>
>> ioctls on proc is evil though (so is ioctl-on-sysfs). It's a device not
>> a proc file!
>>
>>
> I full heartedly agree with you :-)

What about making hypercalls via with a read/write interface into memory
mapped by a char device? Any problems with that approach?

Mike



--

Mike D. Day
STSM and Architect, Open Virtualization
IBM Linux Technology Center
ncmike@us.ibm.com
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