From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: Hari Bathini <hbathini@linux.ibm.com>
Cc: Pingfan Liu <piliu@redhat.com>, Mimi Zohar <zohar@linux.ibm.com>,
Nayna Jain <nayna@linux.ibm.com>, Petr Tesarik <ptesarik@suse.cz>,
Mahesh J Salgaonkar <mahesh@linux.ibm.com>,
Sourabh Jain <sourabhjain@linux.ibm.com>,
lkml <linux-kernel@vger.kernel.org>,
linuxppc-dev <linuxppc-dev@ozlabs.org>,
Eric Biederman <ebiederm@xmission.com>,
Andrew Morton <akpm@linux-foundation.org>,
Dave Young <dyoung@redhat.com>,
Kexec-ml <kexec@lists.infradead.org>,
Vivek Goyal <vgoyal@redhat.com>
Subject: Re: [RESEND PATCH v5 08/11] ppc64/kexec_file: setup backup region for kdump kernel
Date: Mon, 27 Jul 2020 23:37:08 -0300 [thread overview]
Message-ID: <87d04gxt4b.fsf@morokweng.localdomain> (raw)
In-Reply-To: <159579235754.5790.5203600072984600891.stgit@hbathini>
Hari Bathini <hbathini@linux.ibm.com> writes:
> Though kdump kernel boots from loaded address, the first 64KB of it is
> copied down to real 0. So, setup a backup region and let purgatory
> copy the first 64KB of crashed kernel into this backup region before
> booting into kdump kernel. Update reserve map with backup region and
> crashed kernel's memory to avoid kdump kernel from accidentially using
> that memory.
>
> Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
--
Thiago Jung Bauermann
IBM Linux Technology Center
next prev parent reply other threads:[~2020-07-28 2:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-26 19:36 [RESEND PATCH v5 00/11] ppc64: enable kdump support for kexec_file_load syscall Hari Bathini
2020-07-26 19:36 ` [RESEND PATCH v5 01/11] kexec_file: allow archs to handle special regions while locating memory hole Hari Bathini
2020-07-26 19:36 ` [RESEND PATCH v5 02/11] powerpc/kexec_file: mark PPC64 specific code Hari Bathini
2020-07-26 19:37 ` [RESEND PATCH v5 03/11] powerpc/kexec_file: add helper functions for getting memory ranges Hari Bathini
2020-07-28 12:58 ` Michael Ellerman
2020-07-26 19:38 ` [RESEND PATCH v5 04/11] ppc64/kexec_file: avoid stomping memory used by special regions Hari Bathini
2020-07-26 19:38 ` [RESEND PATCH v5 05/11] powerpc/drmem: make lmb walk a bit more flexible Hari Bathini
2020-07-26 19:38 ` [RESEND PATCH v5 06/11] ppc64/kexec_file: restrict memory usage of kdump kernel Hari Bathini
2020-07-28 2:10 ` Thiago Jung Bauermann
2020-07-28 13:44 ` Michael Ellerman
2020-07-28 19:34 ` Hari Bathini
2020-07-26 19:39 ` [RESEND PATCH v5 07/11] ppc64/kexec_file: enable early kernel's OPAL calls Hari Bathini
2020-07-28 2:17 ` Thiago Jung Bauermann
2020-07-28 13:46 ` Michael Ellerman
2020-07-28 19:24 ` Hari Bathini
2020-07-29 1:15 ` Michael Ellerman
2020-07-26 19:39 ` [RESEND PATCH v5 08/11] ppc64/kexec_file: setup backup region for kdump kernel Hari Bathini
2020-07-28 2:37 ` Thiago Jung Bauermann [this message]
2020-07-28 14:11 ` Michael Ellerman
2020-07-26 19:39 ` [RESEND PATCH v5 09/11] ppc64/kexec_file: prepare elfcore header for crashing kernel Hari Bathini
2020-07-26 19:40 ` [RESEND PATCH v5 10/11] ppc64/kexec_file: add appropriate regions for memory reserve map Hari Bathini
2020-07-26 19:40 ` [RESEND PATCH v5 11/11] ppc64/kexec_file: fix kexec load failure with lack of memory hole Hari Bathini
2020-07-28 2:32 ` [RESEND PATCH v5 00/11] ppc64: enable kdump support for kexec_file_load syscall piliu
2020-07-30 6:05 ` Hari Bathini
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