1 files changed, 43 insertions, 0 deletions

diff --git a/gitlab/issues/target_mips/host_missing/accel_TCG/2470.toml b/gitlab/issues/target_mips/host_missing/accel_TCG/2470.toml
new file mode 100644
index 000000000..65e4a7cd0
--- /dev/null
+++ b/gitlab/issues/target_mips/host_missing/accel_TCG/2470.toml
@@ -0,0 +1,43 @@
+id = 2470
+title = "qemu-system-mipsel regression, Linux generated with Buildroot does not boot anymore"
+state = "closed"
+created_at = "2024-08-01T01:10:57.740Z"
+closed_at = "2024-08-20T06:50:14.461Z"
+labels = ["accel: TCG", "target: mips", "workflow::Patch available"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/2470"
+host-os = "Debian/GNU Linux 11"
+host-arch = "MIPS Little Endian"
+qemu-version = "9.0.2"
+guest-os = "Linux"
+guest-arch = "MIPS Little Endian r5 (mips32r5el)"
+description = """Buildroot Toolchain Builders try to release a new version. See a message from Thomas Petazzoni with the remaining issues:
+https://lore.kernel.org/buildroot/20240730223542.273693e5@windsurf/T/#u
+
+All toolchains generate a system that fails to boot:
+
+Run /sbin/init as init process
+process '/bin/busybox' started with executable stack
+Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000004
+
+The interesting thing is that those images boot fine with Qemu v8.2.6,
+but they fail to boot with Qemu v9.0.2.
+
+I tracked it down to this commit:
+commit 4e999bf4197ae3dc58b7092260f98146920a7469
+Author: Richard Henderson <richard.henderson@linaro.org>
+Date:   Sun Jan 28 15:58:52 2024 +1000
+
+    target/mips: Pass ptw_mmu_idx down from mips_cpu_tlb_fill
+    
+    Rather than adjust env->hflags so that the value computed
+    by cpu_mmu_index() changes, compute the mmu_idx that we
+    want directly and pass it down.
+    
+    Introduce symbolic constants for MMU_{KERNEL,ERL}_IDX.
+    
+    Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
+    Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
+
+Unfortunately just reverting this commit in 9.0.2 does not help, Qemu segfaults on Linux Kernel boot then."""
+reproduce = "n/a"
+additional = "n/a"