This patch marks '--mem-usage' option as unsupported for arm64
architecture.
With the newer arm64 kernels supporting 48-bit/52-bit VA address spaces
and keeping a single binary for supporting the same, the address of
kernel symbols like _stext which could be earlier used to determine
VA_BITS value, can no longer to determine whether VA_BITS is set to 48
or 52 in the kernel space.
Hence for now, it makes sense to mark '--mem-usage' option as
unsupported for arm64 architecture until we have more clarity from arm64
kernel maintainers on how to manage the same in future
kernel/makedumpfile versions.
Cc: John Donnelly <john.p.donnelly@xxxxxxxxxx>
Cc: Kazuhito Hagio <k-hagio@xxxxxxxxxxxxx>
Cc: kexec@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Bhupesh Sharma <bhsharma@xxxxxxxxxx>
---
makedumpfile.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/makedumpfile.c b/makedumpfile.c
index baf559e4d74e..ae60466a1e9c 100644
--- a/makedumpfile.c
+++ b/makedumpfile.c
@@ -11564,6 +11564,11 @@ main(int argc, char *argv[])
MSG("\n");
MSG("The dmesg log is saved to %s.\n", info->name_dumpfile);
} else if (info->flag_mem_usage) {
+#ifdef __aarch64__
+ MSG("mem-usage not supported for arm64 architecure.\n");
+ goto out;
+#endif
+
if (!check_param_for_creating_dumpfile(argc, argv)) {
MSG("Commandline parameter is invalid.\n");
MSG("Try `makedumpfile --help' for more information.\n");
--
2.7.4
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