nommu platforms don't have very interesting swapper_pg_dir pointers and usually just #define them to NULL, meaning that we can't include them in the vmcoreinfo on the kexec crash path.
This patch only saves the swapper_pg_dir if we have an MMU. Signed-off-by: Will Deacon <[email protected]> --- kernel/kexec.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/kernel/kexec.c b/kernel/kexec.c index 7b08867..cb5d13c 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1462,7 +1462,9 @@ static int __init crash_save_vmcoreinfo_init(void) VMCOREINFO_SYMBOL(init_uts_ns); VMCOREINFO_SYMBOL(node_online_map); +#ifdef CONFIG_MMU VMCOREINFO_SYMBOL(swapper_pg_dir); +#endif VMCOREINFO_SYMBOL(_stext); VMCOREINFO_SYMBOL(vmlist); -- 1.7.4.1 _______________________________________________ kexec mailing list [email protected] http://lists.infradead.org/mailman/listinfo/kexec
