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+id = 1677
+title = "qemu-system-x86_64 cannot run on Windows when -smp is specified with a value higher than `1`. An important argument for any expectation of VM performance"
+state = "opened"
+created_at = "2023-06-01T23:26:59.176Z"
+closed_at = "n/a"
+labels = ["hostos: Windows"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1677"
+host-os = "Windows 10"
+host-arch = "x86_64 (Intel)"
+qemu-version = "QEMU emulator version 8.0.0 (v8.0.0-12024-gd6b71850be-dirty)"
+guest-os = "NA - Grub2 boot process fails for multiple ISO flavours"
+guest-arch = "x86_64"
+description = """qemu-system-x86_64 seems to crash on Windows the moment you try to use -smp to define more vcpus, even the basic usage of `-smp 4` will cause qemu to segfault after the guest's boot option is selected."""
+reproduce = """1. `qemu-system-x86_64 -smp 4 -cdrom rhel-9.2-x86_64-dvd.iso -drive if=pflash,format=raw,unit=0,readonly=on,file=edk2-x64/OVMF_CODE.fd -m 6G -nodefaults -serial mon:stdio`
+2. Select the boot option to begin your installation
+3. qemu hangs for 10 or so seconds then throws a Segmentation Fault."""
+additional = """1. This does not happen if -smp arguments are omitted, but running VMs with a single vcpu thread is slow and painful.
+2. This still happens even without OVMF (Traditional bios booting)
+3. This still happens even without -defaults and without a serial device
+
+Only output from qemu at death is `Segmentation fault`"""