x86/mm/64: Update comment in preallocate_vmalloc_pages()
authorJoerg Roedel <jroedel@suse.de>
Fri, 14 Aug 2020 15:19:47 +0000 (17:19 +0200)
committerIngo Molnar <mingo@kernel.org>
Sat, 15 Aug 2020 11:56:16 +0000 (13:56 +0200)
commit7a27ef5e83089090f3a4073a9157c862ef00acfc
tree42c076fe753ccd98691928377b000ac5e980b4b7
parent58a18fe95e83b8396605154db04d73b08063f31b
x86/mm/64: Update comment in preallocate_vmalloc_pages()

The comment explaining why 4-level systems only need to allocate on
the P4D level caused some confustion. Update it to better explain why
on 4-level systems the allocation on PUD level is necessary.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200814151947.26229-3-joro@8bytes.org
arch/x86/mm/init_64.c