Kees Cook <kees@xxxxxxxxxx> writes: > When KCOV is enabled all functions get instrumented, unless > the __no_sanitize_coverage attribute is used. To prepare for > __no_sanitize_coverage being applied to __init functions, we have to > handle differences in how GCC's inline optimizations get resolved. For > s390 this requires forcing a couple functions to be inline with > __always_inline. > > Signed-off-by: Kees Cook <kees@xxxxxxxxxx> > --- > Cc: Madhavan Srinivasan <maddy@xxxxxxxxxxxxx> > Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> > Cc: Nicholas Piggin <npiggin@xxxxxxxxx> > Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx> > Cc: Naveen N Rao <naveen@xxxxxxxxxx> > Cc: "Ritesh Harjani (IBM)" <ritesh.list@xxxxxxxxx> > Cc: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx> > Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > Cc: <linuxppc-dev@xxxxxxxxxxxxxxxx> > --- > arch/powerpc/mm/book3s64/hash_utils.c | 2 +- > arch/powerpc/mm/book3s64/radix_pgtable.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/arch/powerpc/mm/book3s64/hash_utils.c b/arch/powerpc/mm/book3s64/hash_utils.c > index 5158aefe4873..93f1e1eb5ea6 100644 > --- a/arch/powerpc/mm/book3s64/hash_utils.c > +++ b/arch/powerpc/mm/book3s64/hash_utils.c > @@ -409,7 +409,7 @@ static DEFINE_RAW_SPINLOCK(linear_map_kf_hash_lock); > > static phys_addr_t kfence_pool; > > -static inline void hash_kfence_alloc_pool(void) > +static __always_inline void hash_kfence_alloc_pool(void) > { > if (!kfence_early_init_enabled()) > goto err; > diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c > index 9f764bc42b8c..3238e9ed46b5 100644 > --- a/arch/powerpc/mm/book3s64/radix_pgtable.c > +++ b/arch/powerpc/mm/book3s64/radix_pgtable.c > @@ -363,7 +363,7 @@ static int __meminit create_physical_mapping(unsigned long start, > } > > #ifdef CONFIG_KFENCE > -static inline phys_addr_t alloc_kfence_pool(void) > +static __always_inline phys_addr_t alloc_kfence_pool(void) > { > phys_addr_t kfence_pool; > I remember seeing a warning msg around .init.text section. Let me dig that... ... Here it is: https://lore.kernel.org/oe-kbuild-all/202504190552.mnFGs5sj-lkp@xxxxxxxxx/ I am not sure why it only complains for hash_debug_pagealloc_alloc_slots(). I believe there should me more functions to mark with __init here. Anyways, here is the patch of what I had in mind.. I am not a compiler expert, so please let me know your thoughts on this. -ritesh