Andrew Morton wrote:

On Thu, 15 Feb 2007 22:14:45 -0800 Dan Hecht [off-list ref] wrote:

  

quoted

quoted

 config PREEMPT
 	bool "Preemptible Kernel (Low-Latency Desktop)"
+	depends on !XEN
 	help
 	  This option reduces the latency of the kernel by making
 	  all kernel code (that is not executing in a critical section)

      

Oh, so that's why it doesn't break when CONFIG_PREEMPT=y.  In which case
that preempt_disable() I spotted is wrong-and-unneeded.

Why doesn't Xen work with preemption??
  

I've forgotten the details.  Ian?  Keir?  Steven?  Maybe it can be done.

    J