From: linus.walleij@linaro.org (Linus Walleij)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 15/20] ARM/hw_breakpoint: Convert to hotplug state machine
Date: Mon, 2 Jan 2017 21:15:29 +0100 [thread overview]
Message-ID: <CACRpkdaxAPSU-XPQrgVRoBecAD1ZpVVP4qPe59af-yy11WqBQw@mail.gmail.com> (raw)
In-Reply-To: <20170102150015.GJ14217@n2100.armlinux.org.uk>
On Mon, Jan 2, 2017 at 4:00 PM, Russell King - ARM Linux
<linux@armlinux.org.uk> wrote:
> On Mon, Jan 02, 2017 at 03:34:32PM +0100, Linus Walleij wrote:
>> in the first line of arch_hw_breakpoint_init() in
>> arch/arm/kernel/hw_breakpoint.c
>>
>> I suspect that is not an accepable solution ...
>>
>> It hangs at PC is at write_wb_reg+0x20c/0x330
>> Which is c03101dc, and looks like this in objdump -d:
>>
>> c031020c: ee001eba mcr 14, 0, r1, cr0, cr10, {5}
>> c0310210: eaffffb3 b c03100e4 <write_wb_reg+0x114>
>
> ... and this is several instructions after the address you mention above.
> Presumably c03101dc is accessing a higher numbered register?
Ah sorry. It looks like this:
c03101dc: ee001ed0 mcr 14, 0, r1, cr0, cr0, {6}
c03101e0: eaffffbf b c03100e4 <write_wb_reg+0x114>
c03101e4: ee001ebf mcr 14, 0, r1, cr0, cr15, {5}
c03101e8: eaffffbd b c03100e4 <write_wb_reg+0x114>
c03101ec: ee001ebe mcr 14, 0, r1, cr0, cr14, {5}
c03101f0: eaffffbb b c03100e4 <write_wb_reg+0x114>
c03101f4: ee001ebd mcr 14, 0, r1, cr0, cr13, {5}
c03101f8: eaffffb9 b c03100e4 <write_wb_reg+0x114>
Yours,
Linus Walleij
next prev parent reply other threads:[~2017-01-02 20:15 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20161117183541.8588-1-bigeasy@linutronix.de>
2016-11-17 18:35 ` [PATCH 07/20] pci/xgene-msi: Convert to hotplug state machine Sebastian Andrzej Siewior
2016-11-17 18:35 ` [PATCH 14/20] arm/bL_switcher: " Sebastian Andrzej Siewior
2016-11-17 18:35 ` [PATCH 15/20] ARM/hw_breakpoint: " Sebastian Andrzej Siewior
2016-11-18 12:04 ` Will Deacon
2016-11-18 13:11 ` Thomas Gleixner
2016-11-18 13:29 ` Will Deacon
2016-11-18 13:42 ` Thomas Gleixner
2016-11-18 13:48 ` Will Deacon
2016-11-18 13:59 ` Thomas Gleixner
2016-11-18 14:11 ` Will Deacon
2017-01-02 14:15 ` Linus Walleij
2017-01-02 14:34 ` Linus Walleij
2017-01-02 15:00 ` Russell King - ARM Linux
2017-01-02 20:15 ` Linus Walleij [this message]
2017-01-03 9:33 ` Mark Rutland
2017-01-04 11:27 ` Sebastian Andrzej Siewior
2017-01-04 13:56 ` Mark Rutland
2017-01-04 14:32 ` Will Deacon
2017-01-05 15:57 ` Mark Rutland
2017-01-05 15:26 ` Linus Walleij
2017-01-05 17:14 ` Mark Rutland
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