Hi, On 09/07/2016 07:29 AM, AKASHI Takahiro wrote: > v26-specific note: After a comment from Rob[0], an idea of adding > "linux,usable-memory-range" was dropped. Instead, an existing > "reserved-memory" node will be used to limit usable memory ranges > on crash dump kernel. > This works not only on UEFI/ACPI systems but also on DT-only systems, > but if he really insists on using DT-specific "usable-memory" property, > I will post additional patches for kexec-tools. Those would be > redundant, though. > Even in that case, the kernel will not have to be changed. > > This patch series adds kdump support on arm64. > There are some prerequisite patches [1],[2]. > > To load a crash-dump kernel to the systems, a series of patches to > kexec-tools, which have not yet been merged upstream, are needed. > Please always use my latest kdump patches, v3 [3]. > > To examine vmcore (/proc/vmcore) on a crash-dump kernel, you can use > - crash utility (coming v7.1.6 or later) [4] > (Necessary patches have already been queued in the master.) > > > [0] http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/452582.html > [1] "arm64: mark reserved memblock regions explicitly in iomem" > http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/450433.html > [2] "efi: arm64: treat regions with WT/WC set but WB cleared as memory" > http://lists.infradead.org/pipermail/linux-arm-kernel/2016-August/451491.html > [3] T.B.D. > [4] https://github.com/crash-utility/crash.git Are you going to rebase your patch series onto v4.9-rc1 tag soon? I see that patches [1] and [2] are already in v4.9-rc1, but when tried to apply this series, I've got conflict on first patch of the series ("arm64: kdump: reserve memory for crash dump kernel"). I want to try arm64 kdump patches again on my board, so I'm interested in this. The question is whether I need to rebase it myself or you will do the same (and address comments) soon. Also I see Geoff published v6 of arm64 kexec-tools patches, so same question is applicable to "(kexec-tools) arm64: add kdump support" patch series. Thanks, Ruslan
