Currently x86 and arm64 support to reserve low memory range for crashkernel. When crashkernel=Y,low is defined, the main kernel would reserve another memblock (instead of crashkernel=X,high, which stored in crashk_res) for crashkernel and store it in crashk_low_res. But the value of /sys/kernel/kexec_crash_size only calculates the size of crashk_res size is not calculated.
To ensure the consistency of /sys/kernel/kexec_crash_size, when crashk_low_res is defined, its size needs to be accumulated to kexec_crash_size. Signed-off-by: Kaihao Bai <[email protected]> --- kernel/kexec_core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/kexec_core.c b/kernel/kexec_core.c index 4d34c78..137f6eb 100644 --- a/kernel/kexec_core.c +++ b/kernel/kexec_core.c @@ -1016,6 +1016,8 @@ size_t crash_get_memory_size(void) mutex_lock(&kexec_mutex); if (crashk_res.end != crashk_res.start) size = resource_size(&crashk_res); + if (crashk_low_res.end != crashk_low_res.start) + size += resource_size(&crashk_low_res); mutex_unlock(&kexec_mutex); return size; } -- 1.8.3.1 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
