From: Madhavan Srinivasan <maddy@linux.ibm.com>
To: linuxppc-dev@lists.ozlabs.org, Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: Mahesh Salgaonkar <mahesh@linux.ibm.com>,
Michael Ellerman <mpe@ellerman.id.au>,
"Ritesh Harjani (IBM)" <ritesh.list@gmail.com>,
Shivang Upadhyay <shivangu@linux.ibm.com>,
Hari Bathini <hbathini@linux.ibm.com>
Subject: Re: [PATCH v2] powerpc/crash: adjust the elfcorehdr size
Date: Wed, 11 Mar 2026 07:44:38 +0530 [thread overview]
Message-ID: <177319508341.269267.3219325956530114508.b4-ty@linux.ibm.com> (raw)
In-Reply-To: <20260227171801.2238847-1-sourabhjain@linux.ibm.com>
On Fri, 27 Feb 2026 22:48:01 +0530, Sourabh Jain wrote:
> With crash hotplug support enabled, additional memory is allocated to
> the elfcorehdr kexec segment to accommodate resources added during
> memory hotplug events. However, the kdump FDT is not updated with the
> same size, which can result in elfcorehdr corruption in the kdump
> kernel.
>
> Update elf_headers_sz (the kimage member representing the size of the
> elfcorehdr kexec segment) to reflect the total memory allocated for the
> elfcorehdr segment instead of the elfcorehdr buffer size at the time of
> kdump load. This allows of_kexec_alloc_and_setup_fdt() to reserve the
> full elfcorehdr memory in the kdump FDT and prevents elfcorehdr
> corruption.
>
> [...]
Applied to powerpc/fixes.
[1/1] powerpc/crash: adjust the elfcorehdr size
https://git.kernel.org/powerpc/c/04e707cb77c272cb0bb2e2e3c5c7f844d804a089
cheers
prev parent reply other threads:[~2026-03-11 2:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-27 17:18 [PATCH v2] powerpc/crash: adjust the elfcorehdr size Sourabh Jain
2026-03-11 2:14 ` Madhavan Srinivasan [this message]
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