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[Qemu-devel] [Bug 921208] Re: win7/x64 installer hangs on startup with 0
From: |
Brendan Dolan-Gavitt |
Subject: |
[Qemu-devel] [Bug 921208] Re: win7/x64 installer hangs on startup with 0x0000005d. |
Date: |
Thu, 16 Jul 2015 14:59:23 -0000 |
The initial bluescreen is caused because of unsupported CPU feature bits
(the DE flag, specifically). The experimental patch Clemens mentioned is
here:
http://lists.gnu.org/archive/html/qemu-devel/2012-09/msg01412.html
Past that, however, there is a bug in QEMU's self-modifying code support
that causes trouble with PatchGuard and results in a different BSOD.
Patrick Hulin did some work debugging and fixing this:
http://lists.gnu.org/archive/html/qemu-devel/2014-08/msg02161.html
After that, 64-bit Windows 7 will run correctly under TCG. However it
should be noted that his patch introduces other problems – e.g., running
Paint Shop Pro 8.0 on Windows 7 32-bit will now crash on startup.
So there is no proper fix yet, but for some use cases these patches may
suffice.
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https://bugs.launchpad.net/bugs/921208
Title:
win7/x64 installer hangs on startup with 0x0000005d.
Status in QEMU:
Confirmed
Status in qemu package in Ubuntu:
Triaged
Bug description:
hi,
during booting win7/x64 installer i'm observing a bsod with 0x0000005d
( msdn: unsupported_processor ).
used command line: qemu-system-x86_64 -m 2048 -hda w7-system.img
-cdrom win7_x64.iso -boot d
adding '-machine accel=kvm' instead of default tcg accel helps to
boot.
installed software:
qemu-1.0
linux-3.2.1
glibc-2.14.1
gcc-4.6.2
hw cpu:
processor : 0..7
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz
stepping : 7
microcode : 0x14
cpu MHz : 1995.739
cache size : 6144 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 7
initial apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3
cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer xsave avx
lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid
bogomips : 3992.23
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
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