tree 97ad40707dfb7d352ee770661a239beedc66bffa
parent 2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e
author Nicolas Pitre <nicolas.pitre@linaro.org> 1506819987 +0100
committer Russell King <rmk+kernel@armlinux.org.uk> 1507803497 +0100

ARM: 8700/1: nommu: always reserve address 0 away

Some nommu systems have RAM at address 0. When vectors are not located
there, the very beginning of memory remains available for dynamic
allocations. The memblock allocator explicitly skips the first page
but the standard page allocator does not, and while it correctly returns
a non-null struct page pointer for that page, page_address() gives 0
which gets confused with NULL (out of memory) by callers despite having
plenty of free memory left.

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>