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Re: [Xen-devel] [PATCH] xl: Special case tap/aio for disk validation

On Thu, 27 Jan 2011, Ian Jackson wrote:
> Stefano Stabellini writes ("Re: [Xen-devel] [PATCH] xl: Special case tap/aio 
> for disk validation"):
> > Yeah, you can check for the presence of:
> > 
> > /sys/modules/{blkbk,xen_blkback}
> > 
> > the modules are called differently in pvops compared to traditional
> > xenolinux kernels.
> No, that doesn't work because it may not be a module.  And we need an
> answer that works with 2.6.18 as well as 2.6.27 and 2.6.32 and 2.6.37
> and 2.6.38 ...

I think that they should be present even if they are built-in.
All the pvops kernels should have:


while all the xenlinux kernels should have:


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