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To: Mahesh J Salgaonkar <mahesh@linux.vnet.ibm.com>,
 linuxppc-dev <linuxppc-dev@ozlabs.org>
From: Michael Ellerman <patch-notifications@ellerman.id.au>
Subject: Re: powerpc/fadump: Unregister fadump on kexec down path.
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Date: Wed,  9 May 2018 00:52:38 +1000 (AEST)
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On Fri, 2018-04-27 at 06:23:18 UTC, Mahesh J Salgaonkar wrote:
> From: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
> 
> Unregister fadump on kexec down path otherwise the fadump registration in
> new kexec-ed kernel complains that fadump is already registered. This
> makes new kernel to continue using fadump registered by previous kernel
> which may lead to invalid vmcore generation. Hence this patch fixes this
> issue by un-registering fadump in fadump_cleanup() which is called during
> kexec path so that new kernel can register fadump with new valid values.
> 
> Fixes: b500afff11f6 ("fadump: Invalidate registration and release reserved memory for general use.")
> Cc: stable@vger.kernel.org
> Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/722cde76d68e8cc4f3de42e71c82fd

cheers