From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 82211] Cannot boot Xen under KVM with X2APIC enabled
Date: Tue, 17 Mar 2015 17:01:58 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=3D82211
Radim Kr=C4=8Dm=C3=A1=C5=99 changed:
What |Removed |Added
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CC| |rkrcmar@redhat.com
--- Comment #10 from Radim Kr=C4=8Dm=C3=A1=C5=99 -=
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I can reproduce with kernel-4.0.0-0.rc3.git2.1.fc23.x86_64 and attached=
Xen.
qemu-kvm -kernel ./xen -initrd /boot/vmlinuz-[...] -cpu kvm64,+x2apic
Xen doesn't use x2APIC (which is good), but x2APIC enables directed EOI=
for
xAPIC, which doesn't work. All is good if we manually avoid it
qemu-kvm [...] -append ioapic_ack=3Dnew
KVM IOAPIC never gets EOI.
I'll take a look where the problem is.
--=20
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