x86/setup: correct off-by-1 in module mapping

x86/setup: correct off-by-1 in module mapping

If a module's length is an exact multiple of PAGE_SIZE, the 2nd argument
passed to set_pdx_range() would be one larger than intended. Use
PFN_{UP,DOWN}() there instead.

Fixes: cd7cc5320bb2 ("x86/boot: add start and size fields to struct boot_module")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
master commit: c3b54301fbe918c7e7e9c3b2dfe671c1ab79f882
master date: 2025-03-20 08:51:55 +0100