diff options
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index d4e0742b197b..9b4bb9d9275f 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -432,6 +432,20 @@ static void __init setup_resources(void) } } } +#ifdef CONFIG_CRASH_DUMP + /* + * Re-add removed crash kernel memory as reserved memory. This makes + * sure it will be mapped with the identity mapping and struct pages + * will be created, so it can be resized later on. + * However add it later since the crash kernel resource should not be + * part of the System RAM resource. + */ + if (crashk_res.end) { + memblock_add(crashk_res.start, resource_size(&crashk_res)); + memblock_reserve(crashk_res.start, resource_size(&crashk_res)); + insert_resource(&iomem_resource, &crashk_res); + } +#endif } static void __init setup_memory_end(void) @@ -602,7 +616,6 @@ static void __init reserve_crashkernel(void) diag10_range(PFN_DOWN(crash_base), PFN_DOWN(crash_size)); crashk_res.start = crash_base; crashk_res.end = crash_base + crash_size - 1; - insert_resource(&iomem_resource, &crashk_res); memblock_remove(crash_base, crash_size); pr_info("Reserving %lluMB of memory at %lluMB " "for crashkernel (System RAM: %luMB)\n", |