ARM: 8681/1: make VMSPLIT_3G_OPT depends on !ARM_LPAE
authorYisheng Xie <xieyisheng1@huawei.com>
Fri, 9 Jun 2017 14:28:18 +0000 (15:28 +0100)
committerRussell King <rmk+kernel@armlinux.org.uk>
Mon, 12 Jun 2017 14:47:28 +0000 (15:47 +0100)
commitbbeedfda8eee0b17ea16e4e157c596095458676a
tree7272e9970d9c4fa1abe896d384edd7d32a6425c1
parent60ce2858514ed9ccaf00dc7e9f4dc219537e9855
ARM: 8681/1: make VMSPLIT_3G_OPT depends on !ARM_LPAE

When both enable CONFIG_ARM_LPAE=y and CONFIG_VMSPLIT_3G_OPT=y, which
means use PAGE_OFFSET=0xB0000000 with ARM_LPAE, the kernel will boot
fail and stop after uncompressed:

   Starting kernel ...

   Uart base = 0x20001000
   watchdog reg = 0x20013000
   dtb addr = 0x80840308
   Uncompressing Linux... done, booting the kernel.

For ARM_LPAE only support 3:1, 2:2, 1:3 split of TTBR1, which mention in:
   http://elinux.org/images/6/6a/Elce11_marinas.pdf - p16

So we should make VMSPLIT_3G_OPT depends on !ARM_LPAE to avoid trigger
this bug.

Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Yisheng Xie <xieyisheng1@huawei.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
arch/arm/Kconfig