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macOS 15.2's Hypervisor.framework exposes SME feature on M4 Macs. However, QEMU's hvf accelerator code does not properly support it yet, causing QEMU to fail to start when hvf accelerator is used on these systems, with the error message: qemu-aarch64-softmmu: cannot disable sme4224 All SME vector lengths are disabled. With SME enabled, at least one vector length must be enabled. Ideally we would have SME support on these hosts; however, until that point, we must suppress the SME feature in the ID registers, so that users can at least run non-SME guests. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2665 Signed-off-by: Joelle van Dyne <j@getutm.app> Message-id: 20250224165735.36792-1-j@getutm.app Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [PMM: expanded commit message, comment] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> |
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