On Wed, Jan 11, 2017 at 05:45:27PM -0700, Jim Fehlig wrote:
For HVM domains, pae is only set in libxl_domain_build_info when explicitly specified in the hypervisor <features> config. This is fine for i686 machines, but is incorrect behavior for x86_64 machines where pae must always be enabled. See the following discussion for additional details https://www.redhat.com/archives/libvir-list/2017-January/msg00254.html Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx> --- src/libxl/libxl_domain.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c index fbe7ee5..a5314b0 100644 --- a/src/libxl/libxl_domain.c +++ b/src/libxl/libxl_domain.c @@ -410,6 +410,12 @@ libxlDomainDefPostParse(virDomainDefPtr def, if (xenDomainDefAddImplicitInputDevice(def) < 0) return -1; + /* For x86_64 HVM, always enable pae */ + if (def->os.type == VIR_DOMAIN_OSTYPE_HVM && + def->os.arch == VIR_ARCH_X86_64) { + def->features[VIR_DOMAIN_FEATURE_PAE] = VIR_TRISTATE_SWITCH_ON; + } +
This will even rewrite explicit <pae enabled='no/> I would check that it's not VIR_TRISTATE_SWITCH_OFF, then enable it and during startup just fail if it is VIR_TRISTATE_SWITCH_ON.
return 0;
}
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2.9.2
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