From: Marc Zyngier <marc.zyngier@arm.com>
To: Manish Jaggi <mjaggi@caviumnetworks.com>,
AKASHI Takahiro <takahiro.akashi@linaro.org>,
catalin.marinas@arm.com, will.deacon@arm.com,
mark.rutland@arm.com, geoff@infradead.org,
kexec@lists.infradead.org, james.morse@arm.com,
bauerman@linux.vnet.ibm.com, dyoung@redhat.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v24 0/9] arm64: add kdump support
Date: Tue, 6 Sep 2016 17:42:00 +0100 [thread overview]
Message-ID: <57CEF1D8.3000904@arm.com> (raw)
In-Reply-To: <35f81eb9-8bd0-16ae-e04d-5ea4b30c0ad6@caviumnetworks.com>
On 06/09/16 17:15, Manish Jaggi wrote:
>
>>> In my setup the GICD_CTRL[RWP] bit is not cleared in the
>>> crashkernels' distributor init function.
>>
>> Which instance is failing? The initial one (just after the initial
>> disable)? Or the one called from gic_dist_config()?
>>
> In crash kernel, when the GICD_CTRL is set to 0x0, RWP is not getting clear.
> And is never cleared for any subsequent writes.
That's weird. It means writes are still pending, and never drained. What
happens if you put a dsb(sy) in the wait_for_rwp() loop?
Thanks,
M.
--
Jazz is not dead. It just smells funny...
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WARNING: multiple messages have this Message-ID (diff)
From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v24 0/9] arm64: add kdump support
Date: Tue, 6 Sep 2016 17:42:00 +0100 [thread overview]
Message-ID: <57CEF1D8.3000904@arm.com> (raw)
In-Reply-To: <35f81eb9-8bd0-16ae-e04d-5ea4b30c0ad6@caviumnetworks.com>
On 06/09/16 17:15, Manish Jaggi wrote:
>
>>> In my setup the GICD_CTRL[RWP] bit is not cleared in the
>>> crashkernels' distributor init function.
>>
>> Which instance is failing? The initial one (just after the initial
>> disable)? Or the one called from gic_dist_config()?
>>
> In crash kernel, when the GICD_CTRL is set to 0x0, RWP is not getting clear.
> And is never cleared for any subsequent writes.
That's weird. It means writes are still pending, and never drained. What
happens if you put a dsb(sy) in the wait_for_rwp() loop?
Thanks,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2016-09-06 16:42 UTC|newest]
Thread overview: 117+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-09 1:52 [PATCH v24 0/9] arm64: add kdump support AKASHI Takahiro
2016-08-09 1:52 ` AKASHI Takahiro
2016-08-09 1:52 ` [PATCH v24 1/9] arm64: kdump: reserve memory for crash dump kernel AKASHI Takahiro
2016-08-09 1:52 ` AKASHI Takahiro
2016-08-09 1:55 ` [PATCH v24 2/9] memblock: add memblock_cap_memory_range() AKASHI Takahiro
2016-08-09 1:55 ` AKASHI Takahiro
2016-08-09 1:55 ` AKASHI Takahiro
2016-08-10 16:26 ` James Morse
2016-08-10 16:26 ` James Morse
2016-08-10 16:26 ` James Morse
2016-08-09 1:56 ` [PATCH v24 3/9] arm64: limit memory regions based on DT property, usable-memory-range AKASHI Takahiro
2016-08-09 1:56 ` AKASHI Takahiro
2016-08-09 1:56 ` [PATCH v24 4/9] arm64: kdump: implement machine_crash_shutdown() AKASHI Takahiro
2016-08-09 1:56 ` AKASHI Takahiro
2016-08-09 1:56 ` [PATCH v24 5/9] arm64: kdump: add kdump support AKASHI Takahiro
2016-08-09 1:56 ` AKASHI Takahiro
2016-08-10 16:38 ` James Morse
2016-08-10 16:38 ` James Morse
2016-08-10 18:18 ` Pratyush Anand
2016-08-10 18:18 ` Pratyush Anand
2016-08-11 10:03 ` Pratyush Anand
2016-08-11 10:03 ` Pratyush Anand
2016-08-16 10:13 ` James Morse
2016-08-16 10:13 ` James Morse
2016-08-17 15:33 ` [PATCH] fixup! " James Morse
2016-08-17 15:33 ` James Morse
2016-08-18 7:32 ` AKASHI Takahiro
2016-08-18 7:32 ` AKASHI Takahiro
2016-08-19 8:00 ` Pratyush Anand
2016-08-19 8:00 ` Pratyush Anand
2016-08-19 13:34 ` James Morse
2016-08-19 13:34 ` James Morse
2016-08-19 15:19 ` Pratyush Anand
2016-08-19 15:19 ` Pratyush Anand
2016-08-18 7:15 ` [PATCH v24 5/9] " AKASHI Takahiro
2016-08-18 7:15 ` AKASHI Takahiro
2016-08-18 7:19 ` Dave Young
2016-08-18 7:19 ` Dave Young
2016-08-19 1:26 ` AKASHI Takahiro
2016-08-19 1:26 ` AKASHI Takahiro
2016-08-19 11:22 ` Pratyush Anand
2016-08-19 11:22 ` Pratyush Anand
2016-08-22 1:29 ` AKASHI Takahiro
2016-08-22 1:29 ` AKASHI Takahiro
2016-08-22 7:07 ` Pratyush Anand
2016-08-22 7:07 ` Pratyush Anand
2016-08-22 13:47 ` James Morse
2016-08-22 13:47 ` James Morse
2016-08-23 0:38 ` AKASHI Takahiro
2016-08-23 0:38 ` AKASHI Takahiro
2016-08-23 11:23 ` Pratyush Anand
2016-08-23 11:23 ` Pratyush Anand
2016-08-24 8:04 ` Dave Young
2016-08-24 8:04 ` Dave Young
2016-08-24 8:04 ` Dave Young
2016-08-24 10:25 ` James Morse
2016-08-24 10:25 ` James Morse
2016-08-24 10:25 ` James Morse
2016-08-25 1:04 ` Dave Young
2016-08-25 1:04 ` Dave Young
2016-08-25 1:04 ` Dave Young
2016-08-19 13:28 ` James Morse
2016-08-19 13:28 ` James Morse
2016-08-22 1:23 ` AKASHI Takahiro
2016-08-22 1:23 ` AKASHI Takahiro
2016-08-24 14:44 ` Ard Biesheuvel
2016-08-24 14:44 ` Ard Biesheuvel
2016-08-26 6:22 ` AKASHI Takahiro
2016-08-26 6:22 ` AKASHI Takahiro
2016-08-09 1:56 ` [PATCH v24 6/9] arm64: kdump: add VMCOREINFO's for user-space coredump tools AKASHI Takahiro
2016-08-09 1:56 ` AKASHI Takahiro
2016-08-09 1:56 ` [PATCH v24 7/9] arm64: kdump: enable kdump in the arm64 defconfig AKASHI Takahiro
2016-08-09 1:56 ` AKASHI Takahiro
2016-08-09 1:56 ` [PATCH v24 8/9] arm64: kdump: update a kernel doc AKASHI Takahiro
2016-08-09 1:56 ` AKASHI Takahiro
2016-08-09 1:57 ` [PATCH v24 9/9] Documentation: dt: chosen properties for arm64 kdump AKASHI Takahiro
2016-08-09 1:57 ` AKASHI Takahiro
2016-08-09 1:57 ` AKASHI Takahiro
2016-08-19 13:26 ` Rob Herring
2016-08-19 13:26 ` Rob Herring
2016-08-19 13:26 ` Rob Herring
2016-08-22 4:28 ` AKASHI Takahiro
2016-08-22 4:28 ` AKASHI Takahiro
2016-08-22 4:28 ` AKASHI Takahiro
2016-08-30 16:34 ` Rob Herring
2016-08-30 16:34 ` Rob Herring
2016-08-30 16:34 ` Rob Herring
2016-08-30 23:45 ` AKASHI Takahiro
2016-08-30 23:45 ` AKASHI Takahiro
2016-08-30 23:45 ` AKASHI Takahiro
2016-08-31 5:02 ` AKASHI Takahiro
2016-08-31 5:02 ` AKASHI Takahiro
2016-08-31 5:02 ` AKASHI Takahiro
2016-09-02 10:11 ` AKASHI Takahiro
2016-09-02 10:11 ` AKASHI Takahiro
2016-09-02 10:11 ` AKASHI Takahiro
2016-09-27 23:39 ` Mark Rutland
2016-09-27 23:39 ` Mark Rutland
2016-09-27 23:39 ` Mark Rutland
2016-08-09 2:04 ` [PATCH v24 0/9] arm64: add kdump support AKASHI Takahiro
2016-08-09 2:04 ` AKASHI Takahiro
2016-08-31 3:41 ` Manish Jaggi
2016-08-31 3:41 ` Manish Jaggi
2016-08-31 5:31 ` AKASHI Takahiro
2016-08-31 5:31 ` AKASHI Takahiro
2016-09-02 12:53 ` Manish Jaggi
2016-09-02 12:53 ` Manish Jaggi
2016-09-05 8:15 ` AKASHI Takahiro
2016-09-05 8:15 ` AKASHI Takahiro
2016-09-05 12:42 ` Manish Jaggi
2016-09-05 12:42 ` Manish Jaggi
2016-09-06 15:33 ` Marc Zyngier
2016-09-06 15:33 ` Marc Zyngier
2016-09-06 16:15 ` Manish Jaggi
2016-09-06 16:15 ` Manish Jaggi
2016-09-06 16:42 ` Marc Zyngier [this message]
2016-09-06 16:42 ` Marc Zyngier
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