On Wed, 13 Apr 2022, Peng Liu wrote:
When __setup() return '0', using invalid option values causes the entire kernel boot option string to be reported as Unknown. Hugetlb calls __setup() and will return '0' when set invalid parameter string. The following phenomenon is observed: cmdline: hugepagesz=1Y hugepages=1 dmesg: HugeTLB: unsupported hugepagesz=1Y HugeTLB: hugepages=1 does not follow a valid hugepagesz, ignoring Unknown kernel command line parameters "hugepagesz=1Y hugepages=1" Since hugetlb will print warning/error information before return for invalid parameter string, just use return '1' to avoid print again. Signed-off-by: Peng Liu <liupeng256@xxxxxxxxxx> Reviewed-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx> Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> Reviewed-by: Mike Kravetz <mike.kravetz@xxxxxxxxxx>
Reviewed-by: Davidlohr Bueso <dave@xxxxxxxxxxxx>
