Re: [PATCH v2] Revert "riscv: kdump: fix crashkernel reserving problem on RISC-V"

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Tue, Apr 30, 2024 at 11:51:53AM +0800, Mingzheng Xing wrote:
> On 4/30/24 11:39, Baoquan He wrote:
> > On 04/30/24 at 11:24am, Mingzheng Xing wrote:
> >> This reverts commit 1d6cd2146c2b58bc91266db1d5d6a5f9632e14c0 which was
> >> mistakenly added into v6.6.y and the commit corresponding to the 'Fixes:'
> >> tag is invalid. For more information, see link [1].
> >>
> >> This will result in the loss of Crashkernel data in /proc/iomem, and kdump
> >> failed:
> >>
> >> ```
> >> 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, kdump works fine. Tested on QEMU riscv.
> >>
> >> Link: https://lore.kernel.org/linux-riscv/ZSiQRDGLZk7lpakE@MiWiFi-R3L-srv [1]
> >> Cc: Baoquan He <bhe@redhat.com>
> >> Cc: Chen Jiahao <chenjiahao16@huawei.com>
> >> Signed-off-by: Mingzheng Xing <xingmingzheng@iscas.ac.cn>
> > 
> > Ack. This is necessary for v6.6.y stable branch.
> > 
> > Acked-by: Baoquan He <bhe@redhat.com>
> > 
> 
> Thanks,
> 
> Hi, Greg. This is for the 6.6.y branch only.

Thanks, now queued up.

greg k-h