diff options
| -rw-r--r-- | kernel/kexec.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index 20ed47ae252f..60bf181b3eae 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1129,6 +1129,7 @@ int crash_shrink_memory(unsigned long new_size) { int ret = 0; unsigned long start, end; + struct resource *ram_res; mutex_lock(&kexec_mutex); @@ -1146,6 +1147,12 @@ int crash_shrink_memory(unsigned long new_size) goto unlock; } + ram_res = kzalloc(sizeof(*ram_res), GFP_KERNEL); + if (!ram_res) { + ret = -ENOMEM; + goto unlock; + } + start = roundup(start, KEXEC_CRASH_MEM_ALIGN); end = roundup(start + new_size, KEXEC_CRASH_MEM_ALIGN); @@ -1154,7 +1161,15 @@ int crash_shrink_memory(unsigned long new_size) if ((start == end) && (crashk_res.parent != NULL)) release_resource(&crashk_res); + + ram_res->start = end; + ram_res->end = crashk_res.end; + ram_res->flags = IORESOURCE_BUSY | IORESOURCE_MEM; + ram_res->name = "System RAM"; + crashk_res.end = end - 1; + + insert_resource(&iomem_resource, ram_res); crash_unmap_reserved_pages(); unlock: |