diff options
| -rw-r--r-- | arch/powerpc/kernel/fadump.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/fadump.c b/arch/powerpc/kernel/fadump.c index 12837d52e84a..08e00448a355 100644 --- a/arch/powerpc/kernel/fadump.c +++ b/arch/powerpc/kernel/fadump.c @@ -878,8 +878,19 @@ static void fadump_setup_crash_memory_ranges(void) for_each_memblock(memory, reg) { start = (unsigned long long)reg->base; end = start + (unsigned long long)reg->size; - if (start == RMA_START && end >= fw_dump.boot_memory_size) - start = fw_dump.boot_memory_size; + + /* + * skip the first memory chunk that is already added (RMA_START + * through boot_memory_size). This logic needs a relook if and + * when RMA_START changes to a non-zero value. + */ + BUILD_BUG_ON(RMA_START != 0); + if (start < fw_dump.boot_memory_size) { + if (end > fw_dump.boot_memory_size) + start = fw_dump.boot_memory_size; + else + continue; + } /* add this range excluding the reserved dump area. */ fadump_exclude_reserved_area(start, end); |