QEMU v9.1.0 UTM Edition

QEMU v9.1.0 with the following patches

• Support for building on iOS
• Building QEMU as a shared library
• virtio-ramfb device
• APRR support for jailbroken iOS
• Support for libucontext
• https://github.com/tctiSH/qemu/tree/with_tcti_vectors @ktemkin's TCTI backend
• https://github.com/mcayland/qemu/tree/screamer-v9.1.0 @mcayland's Screamer device for PPC
• https://github.com/akihikodaki/qemu/tree/macos @akihikodaki's branch containing EGL changes, fixes for macOS, and improved Cocoa frontend (not used in UTM)
• SPICE EGL backend through ANGLE
• TPM CRB support for ARM64