Export __make_folio_secure() and s390_wiggle_split_folio(), as they will be needed to be used by KVM. Signed-off-by: Claudio Imbrenda --- arch/s390/include/asm/uv.h | 2 ++ arch/s390/kernel/uv.c | 6 ++++-- 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h index 8018549a1ad2..0744874ca6df 100644 --- a/arch/s390/include/asm/uv.h +++ b/arch/s390/include/asm/uv.h @@ -632,6 +632,8 @@ int uv_destroy_folio(struct folio *folio); int uv_destroy_pte(pte_t pte); int uv_convert_from_secure_pte(pte_t pte); int make_hva_secure(struct mm_struct *mm, unsigned long hva, struct uv_cb_header *uvcb); +int s390_wiggle_split_folio(struct mm_struct *mm, struct folio *folio); +int __make_folio_secure(struct folio *folio, struct uv_cb_header *uvcb); int uv_convert_from_secure(unsigned long paddr); int uv_convert_from_secure_folio(struct folio *folio); diff --git a/arch/s390/kernel/uv.c b/arch/s390/kernel/uv.c index ca0849008c0d..cb4e8089fbca 100644 --- a/arch/s390/kernel/uv.c +++ b/arch/s390/kernel/uv.c @@ -281,7 +281,7 @@ static int expected_folio_refs(struct folio *folio) * (it's the same logic as split_folio()), and the folio must be * locked. */ -static int __make_folio_secure(struct folio *folio, struct uv_cb_header *uvcb) +int __make_folio_secure(struct folio *folio, struct uv_cb_header *uvcb) { int expected, cc = 0; @@ -311,6 +311,7 @@ static int __make_folio_secure(struct folio *folio, struct uv_cb_header *uvcb) return -EAGAIN; return uvcb->rc == 0x10a ? -ENXIO : -EINVAL; } +EXPORT_SYMBOL(__make_folio_secure); static int make_folio_secure(struct mm_struct *mm, struct folio *folio, struct uv_cb_header *uvcb) { @@ -339,7 +340,7 @@ static int make_folio_secure(struct mm_struct *mm, struct folio *folio, struct u * but another attempt can be made; * -EINVAL in case of other folio splitting errors. See split_folio(). */ -static int s390_wiggle_split_folio(struct mm_struct *mm, struct folio *folio) +int s390_wiggle_split_folio(struct mm_struct *mm, struct folio *folio) { int rc, tried_splits; @@ -411,6 +412,7 @@ static int s390_wiggle_split_folio(struct mm_struct *mm, struct folio *folio) } return -EAGAIN; } +EXPORT_SYMBOL_GPL(s390_wiggle_split_folio); int make_hva_secure(struct mm_struct *mm, unsigned long hva, struct uv_cb_header *uvcb) { -- 2.52.0