Re: [PATCH] Revert "riscv: kdump: fix crashkernel reserving problem on RISC-V"

On Tue, Apr 16, 2024 at 04:56:47PM +0800, Mingzheng Xing wrote:

This reverts commit 1d6cd2146c2b58bc91266db1d5d6a5f9632e14c0 which has been merged into the mainline commit 39365395046f ("riscv: kdump: use generic interface to simplify crashkernel reservation"), but the latter's series of patches are not included in the 6.6 branch.

This will result in the loss of Crash kernel data in /proc/iomem, and kdump loading the kernel will also cause an error:

Memory for crashkernel is not reserved
Please reserve memory by passing"crashkernel=Y@X" parameter to kernel
Then try to loading kdump kernel

After revert this patch, verify that it works properly on QEMU riscv.

Link: https://lore.kernel.org/linux-riscv/ZSiQRDGLZk7lpakE@MiWiFi-R3L-srv Signed-off-by: Mingzheng Xing xingmingzheng@iscas.ac.cn

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I do not understand, what branch is this for? Why have you not cc:ed any of the original developers here? Why does Linus's tree not have the same problem? And the first sentence above does not make much sense as a 6.6 change is merged into 6.7?

confused,

greg k-h