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+id = 1157
+title = "aarch64: enabling MMU causes instruction abort"
+state = "closed"
+created_at = "2022-08-14T15:27:24.095Z"
+closed_at = "2022-08-19T17:06:01.555Z"
+labels = ["workflow::Needs Info"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1157"
+host-os = "Linux"
+host-arch = "x86_64"
+qemu-version = "7.1.0-rc2"
+guest-os = "[SerenityOS](https://github.com/SerenityOS/serenity)"
+guest-arch = "aarch64 Raspberry PI3"
+description = """The title describes the problem pretty accurately, we get an instruction abort when enabling the MMU with a pretty simple set of page tables. This has been regressed from qemu 6.x."""
+reproduce = """1. Run the provided Kernel binary with the command line specified above.
+2. Notice the hang after 'Initialize MMU'. I traced it down to being an instructions abort after the write to the SCTLR_EL1 register.
+3. Try to run with qemu 6.x, and notice that it works."""
+additional = """This does work on actual hardware, so it has to be a qemu bug.
+
+A binary of the Serenity Kernel has been attached to the issue. The source of that binary can be found at commit ca0e32e59fcf67a662e5d3a994d44cd7c941624a of [SerenityOS](https://github.com/SerenityOS/serenity).
+
+[Kernel](/uploads/f731edbf81d8e575035e9693b0a51dbf/Kernel)"""