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virt_to_bus() is deprecated according to the docs, and moreover, won't return the right thing in i386 if we're dealing with high memory mappings. So we make our allocation function return a page, and then use page_address() (for virtual addr) and page_to_phys() (for physical addr) instead. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>