[PATCH v2 1/2] arm64: dts: zx: Fix gic GICR property

Shawn Guo shawn.guo at linaro.org
Mon Nov 28 06:08:18 PST 2016


On Sat, Nov 26, 2016 at 6:03 AM, Arnd Bergmann <arnd at arndb.de> wrote:
> On Monday, October 17, 2016 1:49:19 PM CET Olof Johansson wrote:
>> On Thu, Oct 13, 2016 at 08:31:20PM +0800, Jun Nie wrote:
>> > GICR for multiple CPU can be described with start address and stride,
>> > or with multiple address. Current multiple address and stride are
>> > both used. Fix it.
>> >
>> > vmalloc patch 727a7f5a9 triggered this bug:
>> > [    0.097146] Unable to handle kernel paging request at virtual address ffff000008060008
>> > [    0.097150] pgd = ffff000008602000
>> > [    0.097160] [ffff000008060008] *pgd=000000007fffe003, *pud=000000007fffd003, *pmd=000000007fffc003, *pte=0000000000000000
>> > [    0.097165] Internal error: Oops: 96000007 [#1] PREEMPT SMP
>> > [    0.097170] Modules linked in:
>> > [    0.097177] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.8.0+ #1474
>> > [    0.097179] Hardware name: ZTE zx296718 evaluation board (DT)
>> > [    0.097183] task: ffff80003e8c8b80 task.stack: ffff80003e8d0000
>> > [    0.097197] PC is at gic_populate_rdist+0x74/0x15c
>> > [    0.097202] LR is at gic_starting_cpu+0xc/0x20
>> > [    0.097206] pc : [<ffff0000082b1b18>] lr : [<ffff0000082b26e0>] pstate: 600001c5
>> >
>> > Signed-off-by: Jun Nie <jun.nie at linaro.org>
>>
>> A Fixes: tag would be useful on a patch like this, to tell what patch
>> introduced the problem. Please consider using them in the future.
>>
>> I've applied this one to fixes now.
>
> Hi Olof,
>
> I happened to still have this one in my todo folder as I must have
> missed your reply, and I stumbled over it while looking for things
> that may have gone missing.
>
> I don't see it in v4.9-rc6, did it get dropped accidentally?

Please help get this into v4.9 if possible, as it is required to get
v4.9 kernel boot up on ZTE ZX296718 SoC.  Thanks.

Shawn



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