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Diffstat (limited to 'gitlab/issues/target_arm/host_missing/accel_missing/2916.toml')
| -rw-r--r-- | gitlab/issues/target_arm/host_missing/accel_missing/2916.toml | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/gitlab/issues/target_arm/host_missing/accel_missing/2916.toml b/gitlab/issues/target_arm/host_missing/accel_missing/2916.toml deleted file mode 100644 index e678e0c6c..000000000 --- a/gitlab/issues/target_arm/host_missing/accel_missing/2916.toml +++ /dev/null @@ -1,34 +0,0 @@ -id = 2916 -title = "qemu-system-arm hangs when attempting to enable MMU on Cortex-A7" -state = "opened" -created_at = "2025-04-07T11:27:39.291Z" -closed_at = "n/a" -labels = ["target: arm", "workflow::Needs Info"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/2916" -host-os = "Ubuntu 22.04.5 LTS" -host-arch = "x86_64" -qemu-version = "QEMU emulator version 9.2.3" -guest-os = "bare-metal/?" -guest-arch = "ARM" -description = """QEMU 9.x.x+ hangs when attempting to do enable the MMU from SCTLRL - M bit: https://developer.arm.com/documentation/ddi0601/2025-03/AArch32-Registers/SCTLR--System-Control-Register - -The instruction that hangs is the writing of the SCTLR register: - -``` -mrc p15, 0, r0, c1, c0, 0 -orr r0, r0, 1 -mcr p15, 0, r0, c1, c0, 0 -``` - -I am attempting to enable unaligned accesses and SCTLR-A bit doesn't seem to have any effect if the SCTLR-M is not enabled. Doing an unaligned access on cortex-a7 should be supported but it always trigger a Fault.""" -reproduce = """1. add the mrc/orr/mcr instruction sequence in the ResetHandler -2. link the elf -3. attempt to execute it""" -additional = """The unaligned access looked like it was working in QEMU 8.x.x but it might not have been emulated(?). I also am facing the same issues with MCR hanging and unaligned access not supported with latest 10.0.0-RC2. - -When it hangs, QEMU has to be killed and terminal reset. - -There might be two separate issues here: - -1. writing SCTLR register -2. emulated cortex-a7 not supporting unaligned access (hardware supports it)""" |