From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [Bug Report] kdump crashes after latest EFI memblock changes on arm64 machines with large number of CPUs
Date: Mon, 5 Nov 2018 11:31:37 +0000 [thread overview]
Message-ID: <f5c4c03a-e88f-ea42-b791-e50808e8247b@arm.com> (raw)
In-Reply-To: <CAKv+Gu_1PNiGbgRqd3_0k6CGzh-2P+iAmqk=oSSek69kBCnb8Q@mail.gmail.com>
On 05/11/18 11:11, Ard Biesheuvel wrote:
> (+ Marc)
>
> On 1 November 2018 at 22:14, Bhupesh Sharma <bhsharma@redhat.com> wrote:
>> Hi,
>>
>> With the latest EFI changes for memblock reservation across kdump
>> kernel from Ard (Commit 71e0940d52e107748b270213a01d3b1546657d74
>> ["efi: honour memory reservations passed via a linux specific config
>> table"]), we hit a panic while trying to boot the kdump kernel on
>> machines which have large number of CPUs.
>>
>
> Just for my understanding: why do you boot all 224 CPus when running
> the crash kernel?
FWIW, I've used these patches to kexec a kernel on a 256 CPUs system,
without any issue. Why am I not seeing this problem?
Thanks,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2018-11-05 11:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-01 21:14 [Bug Report] kdump crashes after latest EFI memblock changes on arm64 machines with large number of CPUs Bhupesh Sharma
2018-11-05 11:11 ` Ard Biesheuvel
2018-11-05 11:31 ` Marc Zyngier [this message]
2018-11-06 1:30 ` Will Deacon
2018-11-06 8:44 ` Ard Biesheuvel
2018-11-08 5:58 ` Bhupesh Sharma
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