1 files changed, 37 insertions, 0 deletions

diff --git a/gitlab/issues/target_nios2/host_s390/accel_missing/1693.toml b/gitlab/issues/target_nios2/host_s390/accel_missing/1693.toml
new file mode 100644
index 000000000..4462fa51a
--- /dev/null
+++ b/gitlab/issues/target_nios2/host_s390/accel_missing/1693.toml
@@ -0,0 +1,37 @@
+id = 1693
+title = "qemu-system-nios2 not working on s390x (big endian) hosts"
+state = "closed"
+created_at = "2023-06-07T08:33:31.965Z"
+closed_at = "2023-07-01T10:12:35.751Z"
+labels = ["host: s390", "kind::Bug", "target: nios2", "workflow::Patch available"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1693"
+host-os = "Linux / RHEL 9"
+host-arch = "s390x"
+qemu-version = "current master branch (commit 7ce5a15fa633c7683d4)"
+guest-os = "Linux"
+guest-arch = "nios2"
+description = """qemu-system-nios2 fails to boot a Linux kernel on s390x hosts."""
+reproduce = """1. wget https://qemu-advcal.gitlab.io/qac-best-of-multiarch/download/day14.tar.xz
+2. tar -xJf day14.tar.xz 
+3. cd day14/
+4. qemu-system-nios2 -nographic -kernel vmlinux.elf"""
+additional = """When running with "-d in_asm", it seems like the code initially starts executing ok, but in one of the early translation blocks, there is a difference when comparing the log with a run from a x86 host:
+
+```
+IN: fdt_check_header
+0xc81afd48:  ldw\tr3,0(r4)
+0xc81afd4c:  srli\tr5,r3,24
+0xc81afd50:  slli\tr2,r3,24
+0xc81afd54:  or\tr2,r2,r5
+0xc81afd58:  slli\tr5,r3,8
+0xc81afd5c:  srli\tr3,r3,8
+0xc81afd60:  andhi\tr5,r5,255
+0xc81afd64:  andi\tr3,r3,65280
+0xc81afd68:  or\tr2,r2,r5
+0xc81afd6c:  or\tr2,r2,r3
+0xc81afd70:  movhi\tr3,53262
+0xc81afd74:  addi\tr3,r3,-275
+0xc81afd78:  bne\tr2,r3,0xc81afde8
+```
+
+On the x86 host, the branch at the end is not taken, while on the s390x host, the branch is taken."""