On 9/11/23 23:13, Philippe Mathieu-Daudé wrote:
Too many system-specific code (and in particular KVM related) is pulled in user-only build. This led to adding unjustified stubs as kludge to unagressive linker non-optimizations. This series restrict x86 system-specific features to sysemu, so we don't require any stub, and remove all x86 KVM declarations from user emulation code (to trigger compile failure instead of link one). Philippe Mathieu-Daudé (3): target/i386: Check kvm_hyperv_expand_features() return value RFC target/i386: Restrict system-specific features from user emulation target/i386: Prohibit target specific KVM prototypes on user emulation
At least, patch 2 should be changed so that the #ifdef'ery is done at a higher level.
However, the dependency of user-mode emulation on KVM is really an implementation detail of QEMU. It's very much baked into linux-user and hard to remove, but I'm not sure it's a good idea to add more #ifdef CONFIG_USER_ONLY around KVM code.
Paolo
