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Re: [Qemu-devel] [PATCH] vga: add sr_vbe register set

From: Thomas Lamprecht
Subject: Re: [Qemu-devel] [PATCH] vga: add sr_vbe register set
Date: Tue, 24 May 2016 12:14:13 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0

On 05/23/2016 11:39 PM, Thomas Lamprecht wrote:
> Hi,
> sorry for the delay.
> On 20.05.2016 12:06, Gerd Hoffmann wrote:
>>    Hi,
>>> ./x86_64-softmmu/qemu-system-x86_64 -boot d -cdrom
>>> W7SP1_PROFESSIONAL.iso -m 1024 -smp 2 -enable-kvm -cpu host -drive
>>> if=pflash,format=raw,unit=0,readonly,file=OVMF_CODE-pure-efi.fd -drive
>>> if=pflash,format=raw,unit=1,file=/tmp/OVMF_VARS.fd
>> Still not reproduced.  Installed win7, then updated with sp1, rebooted,
>> still working fine.
>> Can you double-check you really tested with a fixed qemu version?
> I checked on an Arch Host and there I cannot reproduce this, it works
> fine, with and without OVMF.
> Sorry for causing trouble/noise, it seems that the Debian based host
> has here another problem (here it resets constantly with OVMF).
> For a "tested by" (if even wanted) I'd like to recheck on a plain
> Debian Jessie tomorrow, this didn't had any suspicious qemu-vga
> related packages installed or modified but maybe I'm overlooking
> something.

I can reproduce it on a pure Debian Jessie system. It works with the
patch and without OVMF but not with OVMF, after the "Windows loading
files" finishes it just resets the VM.

So on Arch I have no problems but on Debian. Kernel 3.16 vs 4.5 and Gcc
4.9 vs 6.1. OVMF was the same version on both, namely 26bd643 pure (from
your repo).
Although the Debian based Proxmox VE Distro has Kernel 4.4  (Ubuntu
Kernel) and there it doesn't works also, GCC is the same there (just for

The used Kernel:
Linux debian-pure 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt25-2
(2016-04-08) x86_64 GNU/Linux

Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10'
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.9 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib
--enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--enable-gnu-unique-object --disable-vtable-verify --enable-plugin
--with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
--with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc
--enable-multiarch --with-arch-32=i586 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.2 (Debian 4.9.2-10)

My command:
./x86_64-softmmu/qemu-system-x86_64 -boot d -cdrom
/mnt/iso/template/iso/W7SP1_PROFESSIONAL.iso -m 2048 -enable-kvm -drive
-drive if=pflash,format=raw,unit=1,file=/root/OVMF_VARS-pure-efi.fd

My ./configure for this test:
Install prefix    /usr/local
BIOS directory    /usr/local/share/qemu
binary directory  /usr/local/bin
library directory /usr/local/lib
module directory  /usr/local/lib/qemu
libexec directory /usr/local/libexec
include directory /usr/local/include
config directory  /usr/local/etc
local state directory   /usr/local/var
Manual directory  /usr/local/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path       /root/qemu
C compiler        cc
Host C compiler   cc
C++ compiler      c++
Objective-C compiler cc
ARFLAGS           rv
-I/usr/include/glib-2.0 -I/usr/lib/x86_64-linux-gnu/glib-2.0/include  -g
QEMU_CFLAGS       -I/usr/include/pixman-1   -Werror -fPIE -DPIE -m64
-Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wwrite-strings
-Wmissing-prototypes -fno-strict-aliasing -fno-common  -Wendif-labels
-Wmissing-include-dirs -Wempty-body -Wnested-externs -Wformat-security
-Wformat-y2k -Winit-self -Wignored-qualifiers -Wold-style-declaration
-Wold-style-definition -Wtype-limits -fstack-protector-strong  
LDFLAGS           -Wl,--warn-common -Wl,-z,relro -Wl,-z,now -pie -m64 -g
make              make
install           install
python            python -B
smbd              /usr/sbin/smbd
module support    no
host CPU          x86_64
host big endian   no
target list       x86_64-softmmu
tcg debug enabled no
gprof enabled     no
sparse enabled    no
strip binaries    no
profiler          no
static build      no
pixman            system
SDL support       no
GTK support       yes
GTK GL support    no
GNUTLS support    no
GNUTLS hash       no
GNUTLS rnd        no
libgcrypt         no
libgcrypt kdf     no
nettle            yes (2.7.1)
nettle kdf        no
libtasn1          yes
VTE support       no
curses support    no
virgl support     no
curl support      no
mingw32 support   no
Audio drivers     alsa
Block whitelist (rw)
Block whitelist (ro)
VirtFS support    no
VNC support       yes
VNC SASL support  no
VNC JPEG support  yes
VNC PNG support   yes
xen support       no
brlapi support    no
bluez  support    no
Documentation     yes
PIE               yes
vde support       no
netmap support    no
Linux AIO support no
ATTR/XATTR support yes
Install blobs     yes
KVM support       yes
RDMA support      no
TCG interpreter   no
fdt support       yes
preadv support    yes
fdatasync         yes
madvise           yes
posix_madvise     yes
sigev_thread_id   yes
uuid support      yes
libcap-ng support no
vhost-net support yes
vhost-scsi support yes
Trace backends    log
spice support     no
rbd support       no
xfsctl support    no
smartcard support no
libusb            no
usb net redir     no
OpenGL support    no
OpenGL dmabufs    no
libiscsi support  no
libnfs support    no
build guest agent yes
QGA VSS support   no
QGA w32 disk info no
QGA MSI support   no
seccomp support   no
coroutine backend ucontext
coroutine pool    yes
GlusterFS support no
Archipelago support no
gcov              gcov
gcov enabled      no
TPM support       yes
libssh2 support   no
TPM passthrough   yes
QOM debugging     yes
vhdx              yes
lzo support       no
snappy support    no
bzip2 support     no
NUMA host support no
tcmalloc support  no
jemalloc support  no
avx2 optimization yes

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