From: Simon Horman <horms@kernel.org>
To: Sourabh Jain <sourabhjain@linux.ibm.com>
Cc: kexec@lists.infradead.org, Shivang Upadhyay <shivangu@linux.ibm.com>
Subject: Re: [PATCH] ppc64: Reserve FDT memory for full elfcorehdr memory size
Date: Tue, 17 Feb 2026 16:11:37 +0000 [thread overview]
Message-ID: <aZSTOR0MuaCTjEb2@horms.kernel.org> (raw)
In-Reply-To: <20260210050536.285923-1-sourabhjain@linux.ibm.com>
On Tue, Feb 10, 2026 at 10:35:36AM +0530, Sourabh Jain wrote:
> With --hotplug support, extra memory is added to elfcorehdr kexec
> segment to accommodate additional resources during memory hotplug
> events. However, the FDT is not updated with the same size, which
> can lead to elfcorehdr corruption in the kdump kernel.
>
> Fix this by updating the elfcorehdr size in the FDT memory
> reservation entry to use its actual memsz instead of the current
> buffer size.
>
> Fixes: b8408c95e7c0 ("powerpc/kexec_load: add hotplug support")
> Cc: Shivang Upadhyay <shivangu@linux.ibm.com>
> Cc: Simon Horman <horms@kernel.org>
> Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Thanks, applied.
- ppc64: Reserve FDT memory for full elfcorehdr memory size
https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git/commit/?id=600c2f9512b5
prev parent reply other threads:[~2026-02-17 16:11 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-10 5:05 [PATCH] ppc64: Reserve FDT memory for full elfcorehdr memory size Sourabh Jain
2026-02-17 16:11 ` Simon Horman [this message]
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