Presently, while reading a vmcore, makedumpfile uses `cur_cpu_spec.mmu_features` to decide whether the crashed system had RADIX MMU or not.
Currently, makedumpfile fails to get the `cur_cpu_spec` symbol (unless a vmlinux is passed with the `-x` flag to makedumpfile), and hence assigns offsets and shifts (such as pgd_offset_l4) incorrecly considering MMU to be hash MMU. Add `cur_cpu_spec` symbol and offset of `mmu_features` in the `cpu_spec` struct, to VMCOREINFO, so that the symbol address and offset is accessible to makedumpfile, without needing the vmlinux file Signed-off-by: Aditya Gupta <adit...@linux.ibm.com> --- arch/powerpc/kexec/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/kexec/core.c b/arch/powerpc/kexec/core.c index de64c7962991..369b8334a4f0 100644 --- a/arch/powerpc/kexec/core.c +++ b/arch/powerpc/kexec/core.c @@ -63,6 +63,8 @@ void arch_crash_save_vmcoreinfo(void) #ifndef CONFIG_NUMA VMCOREINFO_SYMBOL(contig_page_data); #endif + VMCOREINFO_SYMBOL(cur_cpu_spec); + VMCOREINFO_OFFSET(cpu_spec, mmu_features); #if defined(CONFIG_PPC64) && defined(CONFIG_SPARSEMEM_VMEMMAP) VMCOREINFO_SYMBOL(vmemmap_list); VMCOREINFO_SYMBOL(mmu_vmemmap_psize); -- 2.41.0