malloc: use variable for ZoneHigh size

Use the variable highram_size instead of the BUILD_MAX_HIGHTABLE #define
for the ZoneHigh size. Initialize the new variable with the old #define,
so behavior does not change.

This allows to easily adjust the ZoneHigh size at runtime in a followup
patch.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
1 file changed
tree: 9c5ccd2145e39f2b437290874a17a4450726db15
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