changeset cb74b075186e in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=cb74b075186e
description:
kvm: Only include KVM support for supported kernels
This patch adds a check to ensure that the KVM API provided by the
running kernel is what we are expecting.
diffstat:
SConstruct | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diffs (21 lines):
diff -r 55cddee143f0 -r cb74b075186e SConstruct
--- a/SConstruct Wed Oct 02 06:08:43 2013 -0400
+++ b/SConstruct Wed Oct 02 06:08:45 2013 -0400
@@ -936,10 +936,14 @@
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', '<>')
+# Check if we should enable KVM-based hardware virtualization. The API
+# we rely on exists since version 2.6.36 of the kernel, but somehow
+# the KVM_API_VERSION does not reflect the change. We test for one of
+# the types as a fall back.
+have_kvm = conf.CheckHeader('linux/kvm.h', '<>') and \
+ conf.CheckTypeSize('struct kvm_xsave', '#include <linux/kvm.h>') != 0
if not have_kvm:
- print "Info: Header file <linux/kvm.h> not found, " \
+ print "Info: Compatible header file <linux/kvm.h> not found, " \
"disabling KVM support."
# Check if the requested target ISA is compatible with the host
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