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Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_TCG/1503.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_TCG/1503.toml | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_TCG/1503.toml b/gitlab/issues/target_missing/host_missing/accel_TCG/1503.toml deleted file mode 100644 index 389b0e4bb..000000000 --- a/gitlab/issues/target_missing/host_missing/accel_TCG/1503.toml +++ /dev/null @@ -1,58 +0,0 @@ -id = 1503 -title = "Writing to readonly memory should call cpu_transaction_failed" -state = "opened" -created_at = "2023-02-23T03:30:17.223Z" -closed_at = "n/a" -labels = ["accel: TCG", "workflow::Needs Info"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1503" -host-os = "n/a" -host-arch = "n/a" -qemu-version = "n/a" -guest-os = "n/a" -guest-arch = "n/a" -description = """Currently if a guest writes to ROM memory on a system that doesn't have some other form of memory protection enabled, QEMU will silently ignore the write (https://gitlab.com/qemu-project/qemu/-/blob/master/accel/tcg/cputlb.c#L2432). Instead, it should call cpu_transaction_failed (similar to what happens when a MMIO operation fails in `io_writex` and other places). For CPUs that don't care, it'll continue to be ignored, but for other CPUs the user will get a warning (with `-d guest_errors`) or an exception as appropriate.""" -reproduce = """N/A""" -additional = """The documentation for do_transaction_failed says: - -``` -@do_transaction_failed: Callback for handling failed memory transactions -(ie bus faults or external aborts; not MMU faults) -``` - -which seems reasonably well suited for this case. Here's an overview of what different CPUs currently do if do_transaction_failed is called: - -alpha_cpu_do_transaction_failed: - -* raises a EXCP_MCHK - -arm_cpu_do_transaction_failed: - -* raises ARMFault_SyncExternal with EXCP_DATA_ABORT - -loongarch_cpu_do_transaction_failed: - -* raises EXCCODE_ADEM - -m68k_cpu_transaction_failed: - -* raises EXCP_ACCESS (M68040 only) - -mb_cpu_transaction_failed: - -* raises EXCP_HW_EXCP with ESR_EC_DATA_BUS - -mips_cpu_do_transaction_failed: - -* raises EXCP_DBE (data bus error) - -riscv_cpu_do_transaction_failed: - -* raises RISCV_EXCP_STORE_AMO_ACCESS_FAULT - -sparc_cpu_do_transaction_failed: - -* raises an MMU fault - -xtensa_cpu_do_transaction_failed - -* raises LOAD_STORE_PIF_ADDR_ERROR_CAUSE""" |