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Wed, 4 Feb 2026 15:03:01 +0000 (GMT) From: Claudio Imbrenda To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, borntraeger@de.ibm.com, frankja@linux.ibm.com, nsg@linux.ibm.com, nrb@linux.ibm.com, seiden@linux.ibm.com, gra@linux.ibm.com, schlameuss@linux.ibm.com, hca@linux.ibm.com, svens@linux.ibm.com, agordeev@linux.ibm.com, gor@linux.ibm.com, david@kernel.org, gerald.schaefer@linux.ibm.com Subject: [PATCH v7 07/29] KVM: s390: Export two functions Date: Wed, 4 Feb 2026 16:02:36 +0100 Message-ID: <20260204150259.60425-8-imbrenda@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260204150259.60425-1-imbrenda@linux.ibm.com> References: <20260204150259.60425-1-imbrenda@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjA0MDExMyBTYWx0ZWRfXxdW1XJSujOqE qwzOdB10sM7k/x5abNDPVwcpU13/0zvdxpBMNFIszLRBx3S4I9nRlorA8urNLenmZMjKnL8A0sj DKfwf+obhpKvknyPWyE1xkpBNblVWHLO/wTDMk14R4ApWuHWo8UhJhNzzYHVUN4Ua2cNv+iTpPz xlNR8ZbeYkALW0dVeCWqlAEDE3YeJUdnFLdsmsCnbfQ5CKdgubmP4g8lKb6JCVuKnnCbvfiKBL7 CJueYZS1IeetLKUFmXLObLI31ECqBiX0HDApdLyBSmKGP9sDR9d3bJaxM2G1JoUQhdduOZECT71 q+XzkzWyj54YW/zbsRX8dCob//+fcIQHeHSO3GtkOpJ5sSH2w01cJnmKVPPOA2Kq9vRtfgz56V5 8eBV1yLlGu7Zgj2ULjpB0B+UPGLZmunuHNv8oDwmhNvM0ObUIlzM8ZUb0l4MpN1S3T+hktiZxNQ ks5ZWN4GMLq0LpFZC9Q== X-Proofpoint-GUID: QgSV8MtVXN3eTPPKjROnjRnpbjebCWBe X-Authority-Analysis: v=2.4 cv=DbAaa/tW c=1 sm=1 tr=0 ts=69835faa cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=kE4rddDq9Ks6am3DDGoA:9 X-Proofpoint-ORIG-GUID: QgSV8MtVXN3eTPPKjROnjRnpbjebCWBe X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-04_04,2026-02-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 phishscore=0 adultscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2601150000 definitions=main-2602040113 Content-Type: text/plain; charset="utf-8" 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); =20 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 *u= vcb) +int __make_folio_secure(struct folio *folio, struct uv_cb_header *uvcb) { int expected, cc =3D 0; =20 @@ -311,6 +311,7 @@ static int __make_folio_secure(struct folio *folio, str= uct uv_cb_header *uvcb) return -EAGAIN; return uvcb->rc =3D=3D 0x10a ? -ENXIO : -EINVAL; } +EXPORT_SYMBOL(__make_folio_secure); =20 static int make_folio_secure(struct mm_struct *mm, struct folio *folio, st= ruct uv_cb_header *uvcb) { @@ -339,7 +340,7 @@ static int make_folio_secure(struct mm_struct *mm, stru= ct 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 *fol= io) +int s390_wiggle_split_folio(struct mm_struct *mm, struct folio *folio) { int rc, tried_splits; =20 @@ -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); =20 int make_hva_secure(struct mm_struct *mm, unsigned long hva, struct uv_cb_= header *uvcb) { --=20 2.52.0