Re: [PATCH] ARM/Kconfig: make VMSPLIT_3G_OPT depends on !ARM_LPAE

From	Russell King - ARM Linux <linux@armlinux.org.uk>
Newsgroups	linux.kernel
Subject	Re: [PATCH] ARM/Kconfig: make VMSPLIT_3G_OPT depends on !ARM_LPAE
Date	2017-06-08 18:20 +0200
Message-ID	<tQ8ka-6xx-7@gated-at.bofh.it> (permalink)
References	<tPYXv-yI-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

On Thu, Jun 08, 2017 at 02:05:44PM +0800, Yisheng Xie wrote:
> 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.

Yes, this is much more preferable.  Please drop it into the patch system,
thanks.

-- 
RMK's Patch system: http://www.armlinux.org.uk/developer/patches/
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH] ARM/Kconfig: make VMSPLIT_3G_OPT depends on !ARM_LPAE Yisheng Xie <xieyisheng1@huawei.com> - 2017-06-08 08:20 +0200
  Re: [PATCH] ARM/Kconfig: make VMSPLIT_3G_OPT depends on !ARM_LPAE Nicolas Pitre <nicolas.pitre@linaro.org> - 2017-06-08 18:10 +0200
  Re: [PATCH] ARM/Kconfig: make VMSPLIT_3G_OPT depends on !ARM_LPAE Russell King - ARM Linux <linux@armlinux.org.uk> - 2017-06-08 18:20 +0200

csiph-web