vmalloc cached space..

["Ashish anand" <ashish.anand@inspiretech.com>]

Hello,

As vmalloc returns KSEG2 cached memory , 
1.can I use a volatile pointer to treat it as safe as uncached..?
or
2. i should use vmalloc_prot (size, PAGE_KERNEL_UNCACHED) in umap.c.

Best regards,
Ashish