Hi John, On Tue, Oct 22, 2019 at 12:47 AM John Donnelly <john.p.donnelly@xxxxxxxxxx> wrote: > > Hi Bhupesh > > > On Oct 21, 2019, at 1:53 PM, Bhupesh Sharma <bhsharma@xxxxxxxxxx> wrote: > > > > Hello John, > > > > On Mon, Oct 21, 2019 at 9:39 PM John Donnelly > > <john.p.donnelly@xxxxxxxxxx> wrote: > >> > >> > >> > >> Hello, > >> > >> > >> Kazuhito Hagio asked me to share my test results on this patch for makedumpfile : > >> > >> > >> https://urldefense.proofpoint.com/v2/url?u=https-3A__sourceforge.net_p_makedumpfile_code_ci_7bdb468c2c99dd780c9a5321f93c79cbfdce2527_&d=DwICAg&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=t2fPg9D87F7D8jm0_3CG9yoiIKdRg4qc_thBw4bzMhc&m=UkLq9rpRCDj7DqKa-5dVlvS7yMZxB7jvNd9aGutvEu0&s=d9TLmOPVO4PFtvcFwVOeZRcMg0UOmy04XdgztVxXWyg&e= > >> > >> And I was successfully able to get vmcore dumps on vmlinuz-5.3.6 and 5.4.0-rc3 Intel ( x86-64) kernels. > >> > >> I am still having difficulties getting vmcores on 5.4.0.rc3 Arm kernels with this update to makedumpfile. > >> > >> I get this message; > >> > >> > >> Buffer size for the cyclic mode: 3145728 > >> va_bits : 47 > >> page_offset : ffffc00000000000 > >> calculate_plat_config: PAGE SIZE 0x10000 and VA Bits 47 not supported > >> get_machdep_info_arm64: Can't determine platform config values > >> > >> makedumpfile Failed. > >> > >> > >> Any suggestions welcomed > > > > I am working on the changes in the vmcoreinfo after the 52-bit VA > > changes from Steve were accepted in Linux 5.4-rc1 ("Support for 52-bit > > virtual addressing in kernel space”). > > > I don’t see a commit with this title in linux-stable ; Could you be a little more specific what file that was applied to ? You can have a look at the following commit (and dependencies) in Linus's tree (git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git) which introduced 52-bit kernel VAs for arm64 architecture: commit b6d00d47e81a49f6cf462518c10408f37a3e6785 Author: Steve Capper <steve.capper@xxxxxxx> Date: Wed Aug 7 16:55:22 2019 +0100 arm64: mm: Introduce 52-bit Kernel VAs Thanks, Bhupesh _______________________________________________ kexec mailing list kexec@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/kexec
