On Mon, Oct 14, 2024 at 04:46:13PM +0200, David Hildenbrand wrote: > s390 currently always results in is_kdump_kernel() == false, because > it sets "elfcorehdr_addr = ELFCORE_ADDR_MAX;" early during setup_arch to > deactivate the elfcorehdr= kernel parameter. > > Let's follow the powerpc example and implement our own logic. > > This is required for virtio-mem to reliably identify a kdump > environment to not try hotplugging memory. > > Tested-by: Mario Casquero <mcasq...@redhat.com> > Signed-off-by: David Hildenbrand <da...@redhat.com> > --- > arch/s390/include/asm/kexec.h | 4 ++++ > arch/s390/kernel/crash_dump.c | 6 ++++++ > 2 files changed, 10 insertions(+)
Looks like this could work. But the comment in smp.c above dump_available() needs to be updated. Are you willing to do that, or should I provide an addon patch?
