[GIT PULL] s390 fixes for 6.19-rc7

[Heiko Carstens <hca@linux.ibm.com>]

Hi Linus,

please pull some s390 fixes for 6.19-rc7.
FWIW, I don't expect another s390 pull request before 6.19 is released.

Thanks,
Heiko

The following changes since commit 9448598b22c50c8a5bb77a9103e2d49f134c9578:

  Linux 6.19-rc2 (2025-12-21 15:52:04 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-6.19-4

for you to fetch changes up to ddc6cbef3ef10359b5640b4ee810a520edc73586:

  s390/boot/vmlinux.lds.S: Ensure bzImage ends with SecureBoot trailer (2026-01-22 15:15:50 +0100)

----------------------------------------------------------------
s390 fixes for 6.19-rc7

- Add $(DISABLE_KSTACK_ERASE) to vdso compile flags to fix compile errors
  with old gcc versions

- Fix path to s390 chacha implementation in vdso selftests, after vdso64
  has been renamed to vdso

- Fix off-by-one bug in APQN limit calculation

- Discard .modinfo section from decompressor image to fix SecureBoot

----------------------------------------------------------------
Alexander Egorenkov (1):
      s390/boot/vmlinux.lds.S: Ensure bzImage ends with SecureBoot trailer

Harald Freudenberger (1):
      s390/ap: Fix wrong APQN fill calculation

Heiko Carstens (1):
      s390/vdso: Disable kstack erase

Thomas Weißschuh (1):
      selftests: vDSO: getrandom: Fix path to s390 chacha implementation

 arch/s390/boot/vmlinux.lds.S                     | 17 +++++++++--------
 arch/s390/kernel/vdso/Makefile                   |  2 +-
 drivers/s390/crypto/ap_card.c                    |  2 +-
 drivers/s390/crypto/ap_queue.c                   |  2 +-
 tools/testing/selftests/vDSO/vgetrandom-chacha.S |  2 +-
 5 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/arch/s390/boot/vmlinux.lds.S b/arch/s390/boot/vmlinux.lds.S
index 50988022f9ea..070bc18babd0 100644
--- a/arch/s390/boot/vmlinux.lds.S
+++ b/arch/s390/boot/vmlinux.lds.S
@@ -137,6 +137,15 @@ SECTIONS
 	}
 	_end = .;
 
+	/* Sections to be discarded */
+	/DISCARD/ : {
+		COMMON_DISCARDS
+		*(.eh_frame)
+		*(*__ksymtab*)
+		*(___kcrctab*)
+		*(.modinfo)
+	}
+
 	DWARF_DEBUG
 	ELF_DETAILS
 
@@ -161,12 +170,4 @@ SECTIONS
 		*(.rela.*) *(.rela_*)
 	}
 	ASSERT(SIZEOF(.rela.dyn) == 0, "Unexpected run-time relocations (.rela) detected!")
-
-	/* Sections to be discarded */
-	/DISCARD/ : {
-		COMMON_DISCARDS
-		*(.eh_frame)
-		*(*__ksymtab*)
-		*(___kcrctab*)
-	}
 }
diff --git a/arch/s390/kernel/vdso/Makefile b/arch/s390/kernel/vdso/Makefile
index 2fa12d4ac106..fece5d975eaf 100644
--- a/arch/s390/kernel/vdso/Makefile
+++ b/arch/s390/kernel/vdso/Makefile
@@ -28,7 +28,7 @@ KBUILD_CFLAGS_VDSO := $(filter-out -mno-pic-data-is-text-relative,$(KBUILD_CFLAG
 KBUILD_CFLAGS_VDSO := $(filter-out -munaligned-symbols,$(KBUILD_CFLAGS_VDSO))
 KBUILD_CFLAGS_VDSO := $(filter-out -fno-asynchronous-unwind-tables,$(KBUILD_CFLAGS_VDSO))
 KBUILD_CFLAGS_VDSO += -fPIC -fno-common -fno-builtin -fasynchronous-unwind-tables
-KBUILD_CFLAGS_VDSO += -fno-stack-protector
+KBUILD_CFLAGS_VDSO += -fno-stack-protector $(DISABLE_KSTACK_ERASE)
 ldflags-y := -shared -soname=linux-vdso.so.1 \
 	     --hash-style=both --build-id=sha1 -T
 
diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c
index 8102c8134c49..8b0ad6f582ec 100644
--- a/drivers/s390/crypto/ap_card.c
+++ b/drivers/s390/crypto/ap_card.c
@@ -43,7 +43,7 @@ static ssize_t depth_show(struct device *dev, struct device_attribute *attr,
 {
 	struct ap_card *ac = to_ap_card(dev);
 
-	return sysfs_emit(buf, "%d\n", ac->hwinfo.qd);
+	return sysfs_emit(buf, "%d\n", ac->hwinfo.qd + 1);
 }
 
 static DEVICE_ATTR_RO(depth);
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index 4a32c1e19a1e..a80ab87cad62 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -285,7 +285,7 @@ static enum ap_sm_wait ap_sm_write(struct ap_queue *aq)
 		list_move_tail(&ap_msg->list, &aq->pendingq);
 		aq->requestq_count--;
 		aq->pendingq_count++;
-		if (aq->queue_count < aq->card->hwinfo.qd) {
+		if (aq->queue_count < aq->card->hwinfo.qd + 1) {
 			aq->sm_state = AP_SM_STATE_WORKING;
 			return AP_SM_WAIT_AGAIN;
 		}
diff --git a/tools/testing/selftests/vDSO/vgetrandom-chacha.S b/tools/testing/selftests/vDSO/vgetrandom-chacha.S
index a4a82e1c28a9..8c3cbf4dfd6a 100644
--- a/tools/testing/selftests/vDSO/vgetrandom-chacha.S
+++ b/tools/testing/selftests/vDSO/vgetrandom-chacha.S
@@ -14,7 +14,7 @@
 #elif defined(__riscv) && __riscv_xlen == 64
 #include "../../../../arch/riscv/kernel/vdso/vgetrandom-chacha.S"
 #elif defined(__s390x__)
-#include "../../../../arch/s390/kernel/vdso64/vgetrandom-chacha.S"
+#include "../../../../arch/s390/kernel/vdso/vgetrandom-chacha.S"
 #elif defined(__x86_64__)
 #include "../../../../arch/x86/entry/vdso/vgetrandom-chacha.S"
 #endif