arm: kaslr: Fix memtop calculate, when there is no memory top info, we can't use zero instead it.
hulk inclusion commit 88bf5c03832d56c68fac61e4ae97158b3332bd63 category: feature feature: ARM kaslr support bugzilla: 47952 CVE: NA ------------------------------------------------- Fix memtop calculate, when there is no memory top info, we can't use zero instead it. Signed-off-by: NYe Bin <yebin10@huawei.com> Reviewed-by: NJing Xiangfeng <jingxiangfeng@huawei.com> Signed-off-by: Nzhangyi (F) <yi.zhang@huawei.com> Signed-off-by: NCui GaoSheng <cuigaosheng1@huawei.com> Reviewed-by: NXiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
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