Messages in this thread | | | Date | Thu, 12 Jan 2006 14:11:10 -0500 | From | "Mike D. Day" <> | Subject | Re: [RFC] [PATCH] sysfs support for Xen attributes |
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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
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Mike D. Day STSM and Architect, Open Virtualization IBM Linux Technology Center ncmike@us.ibm.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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