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authorSergey Dyasly <dserrg@gmail.com>2013-09-24 16:38:00 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-05-13 13:59:41 +0200
commitb6b461e90f8fbebb8fa46f363999ed5023be7d3c (patch)
treef1c57d2f39278100b4329d249c37877d3d55c965 /virt
parentd306606e58d53a9d8cd78fefacbe9a50b3aa9fcd (diff)
downloadlinux-linaro-stable-b6b461e90f8fbebb8fa46f363999ed5023be7d3c.tar.gz
ARM: 7840/1: LPAE: don't reject mapping /dev/mem above 4GB
commit 3159f372354e8e1f5dee714663d705dd2c7e0759 upstream. With LPAE enabled, physical address space is larger than 4GB. Allow mapping any part of it via /dev/mem by using PHYS_MASK to determine valid range. PHYS_MASK covers 40 bits with LPAE enabled and 32 bits otherwise. Reported-by: Vassili Karpov <av1474@comtv.ru> Signed-off-by: Sergey Dyasly <dserrg@gmail.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: hujianyang <hujianyang@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'virt')
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