From 0ccb32c983e0fe79d408e50ec1386aaf78c9a7ed Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Sat, 28 May 2016 10:03:55 +0200 Subject: s390/mm: align swapper_pg_dir to 16k The segment/region table that is part of the kernel image must be properly aligned to 16k in order to make the crdte inline assembly work. Otherwise it will calculate a wrong segment/region table start address and access incorrect memory locations if the swapper_pg_dir is not aligned to 16k. Therefore define BSS_FIRST_SECTIONS in order to put the swapper_pg_dir at the beginning of the bss section and also align the bss section to 16k just like other architectures did. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- arch/s390/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/s390/mm/init.c') diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 2489b2e917c8..44db60d9e519 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -40,7 +40,7 @@ #include #include -pgd_t swapper_pg_dir[PTRS_PER_PGD] __attribute__((__aligned__(PAGE_SIZE))); +pgd_t swapper_pg_dir[PTRS_PER_PGD] __section(.bss..swapper_pg_dir); unsigned long empty_zero_page, zero_page_mask; EXPORT_SYMBOL(empty_zero_page); -- cgit v1.2.3