4b7b7736ee
The size of the reserved memory in the functions show_reserved_mem, check_crash_mem_reserved, and do_estimate are fetched from the sysfs node `/sys/kernel/kexec_crash_size`. However, in the case of fadump, the reserved area size is instead present in /sys/kernel/fadump/mem_reserved. For example: $ kdumpctl showmem kdump: Dump mode is fadump kdump: Reserved 0MB memory for crash kernel The above command showed 0MB for Reserved memory which is incorrect, the actual reservation was 2048MB. To resolve this issue a new helper function is introduced to fetch reserved memory size based on the dump mode. For "fadump" mode, it looks in `/sys/kernel/fadump/mem_reserved`, otherwise, it uses `/sys/kernel/kexec_crash_size`. And all functions that previously fetching reserved memory directly from `/sys/kernel/kexec_crash_size` sysfs node are now updated to use this new function to get the reserved memory size. With the fix in place, the `kdumpctl showmem` command will now display correct reserved memory size. $ kdumpctl showmem kdump: Dump mode is fadump kdump: Reserved 2048MB memory for crash kernel Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com> Reported-by: Sachin P Bappalige <sachinpb@linux.vnet.ibm.com> Reviewed-by: Coiby Xu <coxu@redhat.com>
Adding a patch to kexec-tools ============================= There is a mailing list kexec@lists.fedoraproject.org where all the dicussion related to fedora kexec-tools happen. All the patches are posted there for inclusion and committed to kexec-tools after review. So if you want your patches to be included in fedora kexec-tools package, post these to kexec@lists.fedoraproject.org. One can subscribe to list and browse through archives here. https://admin.fedoraproject.org/mailman/listinfo/kexec