Commit e1b34746 authored Oct 15, 2015 by Susheel Khiani

iommu: msm: Correct address range in access_control feature



With access_control feature, we want to block
peripheral access to only kernel text region. By
aligning kernel_start and kernel_end address by
2MB we are blocking access to region outside
of kernel text region which is wrong. So fix this
and remove the alignment of addresses.

Change-Id: Idefb8f41a59a6de1fb581cbfb6b23fef375fffd4
Signed-off-by: Susheel Khiani <skhiani@codeaurora.org>

parent ad9fe5a4

drivers/iommu/msm_iommu.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -77,8 +77,8 @@ void msm_access_control(void)
		unsigned long start, kernel_start, kernel_end, end;

		start = 0;
		kernel_start = ALIGN(__pa(_stext), SZ_2M);
		kernel_end = ALIGN(__pa(_etext), SZ_2M);
		kernel_start = rounddown(__pa(_stext), PAGE_SIZE);
		kernel_end = ALIGN(__pa(_etext), PAGE_SIZE);
		end = 0xFFFFFFFF;

		/*