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-cpu host or -cpu max breaks GRUB on AMD
Description of problem:
I'm running the on an AMD Ryzen CPU host. I am emulating a Debian Bookworm image stored in a raw disk. It uses GRUB to load a large (400MB) initrd. When ran with the flag -cpu host or -cpu max, GRUB throws an out of memory error while loading the initrd. This doesn't occur when using -cpu kvm64 or excluding the -cpu flag.
If I direct boot the initrd and kernel via -initrd and -kernel, it works fine. The image also works with -cpu host on an Intel CPU host machine. The image also works with -cpu EPYC.
Steps to reproduce:
1. Create a raw disk with a large initrd and GRUB boot loader
2. Start a qemu machine on an AMD host
3. Receive an error: out of memory
Additional information:
I could try selectively enabling CPU features, but I was wondering if the maintainers knew of any feature that might be causing this or how to list the features -cpu host enables.
I also am not 100% that this is a QEMU bug, but it seems the only way to fix it is changing the QEMU config.
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