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[Qemu-devel] qemu-2.7 regression, IPXE boot in HVM fails
From: |
Olaf Hering |
Subject: |
[Qemu-devel] qemu-2.7 regression, IPXE boot in HVM fails |
Date: |
Wed, 31 Aug 2016 12:24:35 +0200 |
User-agent: |
Mutt/1.6.2 (6759) |
The following HVM domU.cfg crashes during boot from emulated network
with qemu 2.7, but it works fine with qemu stable-2.6 branch:
name='hvm'
memory=1024
vcpus=2
boot="n"
disk=[ 'file:/disk0.raw,hda,w', ]
vif=[ 'mac=00:08:15:41:10:80,bridge=br0', ]
keymap="de"
serial="pty"
builder="hvm"
vnc=1
vncunused=1
device_model_version="qemu-xen"
device_model_override="/usr/lib/qemu-2.7/bin/qemu-system-i386"
qemu build environment is identical for 2.6 and 2.7. dom0 is current
xen.git#staging-4.7. xl dmesg shows no obvious difference, the output is
identical for both boot attempts except for the crash part:
[-(d2)-]
{+(d1)+} Booting from [-c980:0361-] {+c980:0382
(XEN) Real-mode emulation failed: d1v0 Real @ 9c4c:000006ab -> 0f ae 06 d0 1c
0f 01 0e c6 1c 0f 01 06 c0 1c fc
(XEN) domain_crash called from realmode.c:165
(XEN) Domain 1 (vcpu#0) crashed on cpu#3:
(XEN) ----[ Xen-4.7.20160826T082055.80bc435-1.xen47 x86_64 debug=n Not
tainted ]----
(XEN) CPU: 3
(XEN) RIP: 9c4c:[<00000000000006ab>]
(XEN) RFLAGS: 0000000000010046 CONTEXT: hvm guest (d1v0)
(XEN) rax: 0000000000000020 rbx: 0000000000009cd0 rcx: 0000000000000000
(XEN) rdx: 0000000000006f28 rsi: 000000003f790456 rdi: 000000003f6f0000
(XEN) rbp: 00000000ffffffff rsp: 0000000000002ea8 r8: 0000000000000000
(XEN) r9: 0000000000000000 r10: 0000000000000000 r11: 0000000000000000
(XEN) r12: 0000000000000000 r13: 0000000000000000 r14: 0000000000000000
(XEN) r15: 0000000000000000 cr0: 0000000000000010 cr4: 0000000000000000
(XEN) cr3: 0000000000000000 cr2: 0000000000000000
(XEN) ds: 9cd0 es: 0000 fs: 0000 gs: 0000 ss: 9cd0 cs: 9c4c+}
Is there something that could be copied from /usr/lib/qemu-2.6 to
/usr/lib/qemu-2.7 to check if its related to the emulated ROMs?
Olaf
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