ARM: mm: cleanup checks for membank overlap with vmalloc area
authorCyril Chemparathy <cyril@ti.com>
Fri, 20 Jul 2012 16:24:45 +0000 (12:24 -0400)
committerWill Deacon <will.deacon@arm.com>
Thu, 30 May 2013 15:02:26 +0000 (16:02 +0100)
commitadf2e9fda34c1cfff2ee4e47078b1e142adb2c30
treef9c448396ef1e774d27e75f684a2d4687d4cd6ee
parent5b20c5b2f014ecc0a6310988af69cd7ede9e7c67
ARM: mm: cleanup checks for membank overlap with vmalloc area

On Keystone platforms, physical memory is entirely outside the 32-bit
addressible range.  Therefore, the (bank->start > ULONG_MAX) check below marks
the entire system memory as highmem, and this causes unpleasentness all over.

This patch eliminates the extra bank start check (against ULONG_MAX) by
checking bank->start against the physical address corresponding to vmalloc_min
instead.

In the process, this patch also cleans up parts of the highmem sanity check
code by removing what has now become a redundant check for banks that entirely
overlap with the vmalloc range.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Subash Patel <subash.rp@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
arch/arm/mm/mmu.c