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Revision aa87d458

IDaa87d45855c7b255b451622a84a3e5b9b4393425

Added by Eduardo Habkost about 11 years ago

target-i386: Don't set any KVM flag by default if KVM is disabled

This is a cleanup that tries to solve two small issues:

- We don't need a separate kvm_pv_eoi_features variable just to keep a
constant calculated at compile-time, and this style would require
adding a separate variable (that's declared twice because of the
CONFIG_KVM ifdef) for each feature that's going to be
enabled/disabled by machine-type compat code.
- The pc-1.3 code is setting the kvm_pv_eoi flag on cpuid_kvm_features
even when KVM is disabled at runtime. This small inconsistency in
the cpuid_kvm_features field isn't a problem today because
cpuid_kvm_features is ignored by the TCG code, but it may cause
unexpected problems later when refactoring the CPUID handling code.

This patch eliminates the kvm_pv_eoi_features variable and simply uses
kvm_enabled() inside the enable_kvm_pv_eoi() compat function, so it
enables kvm_pv_eoi only if KVM is enabled. I believe this makes the
behavior of enable_kvm_pv_eoi() clearer and easier to understand.

Signed-off-by: Eduardo Habkost <>
Acked-by: Gleb Natapov <>
Reviewed-by: Marcelo Tosatti <>
Signed-off-by: Andreas Färber <>

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