diff options
Diffstat (limited to 'SConstruct')
| -rwxr-xr-x | SConstruct | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/SConstruct b/SConstruct index 6354bf0ca..92440d7b9 100755 --- a/SConstruct +++ b/SConstruct @@ -944,6 +944,26 @@ if not have_fenv: print "Warning: Header file <fenv.h> not found." print " This host has no IEEE FP rounding mode control." +# Check if we should enable KVM-based hardware virtualization +have_kvm = conf.CheckHeader('linux/kvm.h', '<>') +if not have_kvm: + print "Info: Header file <linux/kvm.h> not found, " \ + "disabling KVM support." + +# Check if the requested target ISA is compatible with the host +def is_isa_kvm_compatible(isa): + isa_comp_table = { + } + try: + import platform + host_isa = platform.machine() + except: + print "Warning: Failed to determine host ISA." + return False + + return host_isa in isa_comp_table.get(isa, []) + + ###################################################################### # # Finish the configuration @@ -1038,6 +1058,7 @@ sticky_vars.AddVariables( BoolVariable('USE_POSIX_CLOCK', 'Use POSIX Clocks', have_posix_clock), BoolVariable('USE_FENV', 'Use <fenv.h> IEEE mode control', have_fenv), BoolVariable('CP_ANNOTATE', 'Enable critical path annotation capability', False), + BoolVariable('USE_KVM', 'Enable hardware virtualized (KVM) CPU models', have_kvm), EnumVariable('PROTOCOL', 'Coherence protocol for Ruby', 'None', all_protocols), ) @@ -1205,6 +1226,15 @@ for variant_path in variant_paths: if env['EFENCE']: env.Append(LIBS=['efence']) + if env['USE_KVM']: + if not have_kvm: + print "Warning: Can not enable KVM, host seems to lack KVM support" + env['USE_KVM'] = False + elif not is_isa_kvm_compatible(env['TARGET_ISA']): + print "Info: KVM support disabled due to unsupported host and " \ + "target ISA combination" + env['USE_KVM'] = False + # Save sticky variable settings back to current variables file sticky_vars.Save(current_vars_file, env) |