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Re: verify kernel virtual address

2008/12/12 Usman S. Ansari <uansari@xxxxxxxxx>:
> I am looking for a macro, which can verify, if given address is valid kernel virtual address. Does something like this exist ?
>

I am not sure if the macro exists, but, since the Kernel occupies the
first half of the virtual address space, the following macro would
work for a Kernel meant for a 32-bit architecture.

#define KERNEL_VOK(addr) ((addr) < (0x80000000U))

Assuming that the addr passed is an unsigned quantity. This should be
easily extensible for other architectures.

-- 
Vimal

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