* [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC
@ 2005-07-26 4:28 Darryl Dixon
2005-07-26 5:56 ` Pascal Terjan
0 siblings, 1 reply; 6+ messages in thread
From: Darryl Dixon @ 2005-07-26 4:28 UTC (permalink / raw)
To: qemu-devel
Hi All, Fabrice,
Compiling the new kqemu-0.7.1 on Fedora Core 4 with kernel
2.6.12-1.1398_FC4 gives this error:
-------------8<-------------------
[dixond@unixadmindazfc2 kqemu]$ make
make -C /lib/modules/2.6.12-1.1398_FC4/build M=`pwd` modules
make[1]: Entering directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
CC [M] /opt/src/qemu-0.7.1/kqemu/kqemu-linux.o
cp /opt/src/qemu-0.7.1/kqemu/kqemu-mod-i386.o /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.o
Building modules, stage 2.
MODPOST
Warning: could not find /opt/src/qemu-0.7.1/kqemu/.kqemu-mod.o.cmd
for /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
*** Warning: "__PAGE_KERNEL_EXEC" [/opt/src/qemu-0.7.1/kqemu/kqemu.ko]
undefined!
CC /opt/src/qemu-0.7.1/kqemu/kqemu.mod.o
LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.ko
make[1]: Leaving directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
-------------8<-------------------
And then the module fails to modrobe successfully:
-------------8<-------------------
[root@unixadmindazfc2 qemu-0.7.1]# /sbin/modprobe kqemu
FATAL: Error inserting kqemu
(/lib/modules/2.6.12-1.1398_FC4/misc/kqemu.ko): Unknown symbol in
module, or unknown parameter (see dmesg)
[root@unixadmindazfc2 qemu-0.7.1]# dmesg|tail -1
kqemu: Unknown symbol __PAGE_KERNEL_EXEC
-------------8<-------------------
Please CC me on any replies as I am no longer subscribed to the list.
Cheers,
--
Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC
2005-07-26 4:28 [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC Darryl Dixon
@ 2005-07-26 5:56 ` Pascal Terjan
2005-07-26 6:06 ` Pascal Terjan
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Pascal Terjan @ 2005-07-26 5:56 UTC (permalink / raw)
To: qemu-devel; +Cc: Darryl Dixon
On 7/26/05, Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net> wrote:
> Hi All, Fabrice,
>
> Compiling the new kqemu-0.7.1 on Fedora Core 4 with kernel
> 2.6.12-1.1398_FC4 gives this error:
>
> -------------8<-------------------
> [dixond@unixadmindazfc2 kqemu]$ make
> make -C /lib/modules/2.6.12-1.1398_FC4/build M=`pwd` modules
> make[1]: Entering directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
> CC [M] /opt/src/qemu-0.7.1/kqemu/kqemu-linux.o
> cp /opt/src/qemu-0.7.1/kqemu/kqemu-mod-i386.o /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
> LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.o
> Building modules, stage 2.
> MODPOST
> Warning: could not find /opt/src/qemu-0.7.1/kqemu/.kqemu-mod.o.cmd
> for /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
> *** Warning: "__PAGE_KERNEL_EXEC" [/opt/src/qemu-0.7.1/kqemu/kqemu.ko]
> undefined!
> CC /opt/src/qemu-0.7.1/kqemu/kqemu.mod.o
> LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.ko
> make[1]: Leaving directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
My understanding of the problem :
on i386, in pgtable.h we have
extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
an there is EXPORT_SYMBOL(__PAGE_KERNEL) but not for __PAGE_KERNEL_EXEC
on x86_64 :
#define __PAGE_KERNEL_EXEC \
(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
#define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
#define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
So, on i386 __PAGE_KERNEL_EXEC is an extern variable wich is not
exported and not a macro.
I wrote a patch on
http://www.zarb.org/cgi-bin/viewcvs.cgi/plf/SPECS/non-free/dkms-kqemu/kqemu-0.7.1-PAGE_KERNEL_EXEC.patch?rev=1.1&view=markup
but I don't know much kernel stuff so I have no idea how much it is
broken :-)
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC
2005-07-26 5:56 ` Pascal Terjan
@ 2005-07-26 6:06 ` Pascal Terjan
2005-07-26 11:10 ` Darryl Dixon
2005-07-26 21:34 ` Fabrice Bellard
2 siblings, 0 replies; 6+ messages in thread
From: Pascal Terjan @ 2005-07-26 6:06 UTC (permalink / raw)
To: qemu-devel; +Cc: Darryl Dixon
On 7/26/05, Pascal Terjan <pterjan@gmail.com> wrote:
> On 7/26/05, Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net> wrote:
> > Hi All, Fabrice,
> >
> > Compiling the new kqemu-0.7.1 on Fedora Core 4 with kernel
> > 2.6.12-1.1398_FC4 gives this error:
> >
> > -------------8<-------------------
> > [dixond@unixadmindazfc2 kqemu]$ make
> > make -C /lib/modules/2.6.12-1.1398_FC4/build M=`pwd` modules
> > make[1]: Entering directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
> > CC [M] /opt/src/qemu-0.7.1/kqemu/kqemu-linux.o
> > cp /opt/src/qemu-0.7.1/kqemu/kqemu-mod-i386.o /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
> > LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.o
> > Building modules, stage 2.
> > MODPOST
> > Warning: could not find /opt/src/qemu-0.7.1/kqemu/.kqemu-mod.o.cmd
> > for /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
> > *** Warning: "__PAGE_KERNEL_EXEC" [/opt/src/qemu-0.7.1/kqemu/kqemu.ko]
> > undefined!
> > CC /opt/src/qemu-0.7.1/kqemu/kqemu.mod.o
> > LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.ko
> > make[1]: Leaving directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
>
> My understanding of the problem :
> on i386, in pgtable.h we have
> extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
> #define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
>
> an there is EXPORT_SYMBOL(__PAGE_KERNEL) but not for __PAGE_KERNEL_EXEC
>
> on x86_64 :
> #define __PAGE_KERNEL_EXEC \
> (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
> #define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
> #define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
>
> So, on i386 __PAGE_KERNEL_EXEC is an extern variable wich is not
> exported and not a macro.
>
> I wrote a patch on
> http://www.zarb.org/cgi-bin/viewcvs.cgi/plf/SPECS/non-free/dkms-kqemu/kqemu-0.7.1-PAGE_KERNEL_EXEC.patch?rev=1.1&view=markup
> but I don't know much kernel stuff so I have no idea how much it is
> broken :-)
>
after think to what I wrote, as PAGE_KERNEL is OK, a simpler and
better patch may be to use & ~_PAGE_NX
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC
2005-07-26 5:56 ` Pascal Terjan
2005-07-26 6:06 ` Pascal Terjan
@ 2005-07-26 11:10 ` Darryl Dixon
2005-07-26 15:53 ` Sebastian Kaliszewski
2005-07-26 21:34 ` Fabrice Bellard
2 siblings, 1 reply; 6+ messages in thread
From: Darryl Dixon @ 2005-07-26 11:10 UTC (permalink / raw)
To: qemu-devel
[-- Attachment #1: Type: text/plain, Size: 2361 bytes --]
Well, I can confirm that this works OK.
Also, congrats Fabrice, this version of kqemu appears to work OK with
Win 9x (I booted my Win98SE machine), and the games that I use QEMU to
run (AoE2, Civ3, Baldurs Gate 2) all were noticeably quicker. The
speedup didn't seem to be as dramatic as WinXP with/without kqemu, but
it was definitely there.
Cheers,
D
On Tue, 2005-07-26 at 07:56 +0200, Pascal Terjan wrote:
> On 7/26/05, Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net> wrote:
> > Hi All, Fabrice,
> >
> > Compiling the new kqemu-0.7.1 on Fedora Core 4 with kernel
> > 2.6.12-1.1398_FC4 gives this error:
> >
> > -------------8<-------------------
> > [dixond@unixadmindazfc2 kqemu]$ make
> > make -C /lib/modules/2.6.12-1.1398_FC4/build M=`pwd` modules
> > make[1]: Entering directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
> > CC [M] /opt/src/qemu-0.7.1/kqemu/kqemu-linux.o
> > cp /opt/src/qemu-0.7.1/kqemu/kqemu-mod-i386.o /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
> > LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.o
> > Building modules, stage 2.
> > MODPOST
> > Warning: could not find /opt/src/qemu-0.7.1/kqemu/.kqemu-mod.o.cmd
> > for /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
> > *** Warning: "__PAGE_KERNEL_EXEC" [/opt/src/qemu-0.7.1/kqemu/kqemu.ko]
> > undefined!
> > CC /opt/src/qemu-0.7.1/kqemu/kqemu.mod.o
> > LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.ko
> > make[1]: Leaving directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
>
> My understanding of the problem :
> on i386, in pgtable.h we have
> extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
> #define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
>
> an there is EXPORT_SYMBOL(__PAGE_KERNEL) but not for __PAGE_KERNEL_EXEC
>
> on x86_64 :
> #define __PAGE_KERNEL_EXEC \
> (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
> #define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
> #define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
>
> So, on i386 __PAGE_KERNEL_EXEC is an extern variable wich is not
> exported and not a macro.
>
> I wrote a patch on
> http://www.zarb.org/cgi-bin/viewcvs.cgi/plf/SPECS/non-free/dkms-kqemu/kqemu-0.7.1-PAGE_KERNEL_EXEC.patch?rev=1.1&view=markup
> but I don't know much kernel stuff so I have no idea how much it is
> broken :-)
--
Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net>
[-- Attachment #2: Type: text/html, Size: 4131 bytes --]
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC
2005-07-26 11:10 ` Darryl Dixon
@ 2005-07-26 15:53 ` Sebastian Kaliszewski
0 siblings, 0 replies; 6+ messages in thread
From: Sebastian Kaliszewski @ 2005-07-26 15:53 UTC (permalink / raw)
To: qemu-devel
Hello!
Darryl Dixon wrote:
> Well, I can confirm that this works OK.
>
> Also, congrats Fabrice, this version of kqemu appears to work OK with
> Win 9x (I booted my Win98SE machine), and the games that I use QEMU to
> run (AoE2, Civ3, Baldurs Gate 2) all were noticeably quicker. The
> speedup didn't seem to be as dramatic as WinXP with/without kqemu, but
> it was definitely there.
>
> Cheers,
> D
>
>
> On Tue, 2005-07-26 at 07:56 +0200, Pascal Terjan wrote:
>
>>On 7/26/05, Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net <mailto:esrever_otua@pythonhacker.is-a-geek.net>> wrote:
>>> Hi All, Fabrice,
>>>
>>> Compiling the new kqemu-0.7.1 on Fedora Core 4 with kernel
>>> 2.6.12-1.1398_FC4 gives this error:
>>>
>>> -------------8<-------------------
>>> [dixond@unixadmindazfc2 kqemu]$ make
>>> make -C /lib/modules/2.6.12-1.1398_FC4/build M=`pwd` modules
>>> make[1]: Entering directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
>>> CC [M] /opt/src/qemu-0.7.1/kqemu/kqemu-linux.o
>>> cp /opt/src/qemu-0.7.1/kqemu/kqemu-mod-i386.o /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
>>> LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.o
>>> Building modules, stage 2.
>>> MODPOST
>>> Warning: could not find /opt/src/qemu-0.7.1/kqemu/.kqemu-mod.o.cmd
>>> for /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
>>> *** Warning: "__PAGE_KERNEL_EXEC" [/opt/src/qemu-0.7.1/kqemu/kqemu.ko]
>>> undefined!
>>> CC /opt/src/qemu-0.7.1/kqemu/kqemu.mod.o
>>> LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.ko
>>> make[1]: Leaving directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
Had exactly the same problem the proposed patch seems to fix it.
rgds
Sebastian
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC
2005-07-26 5:56 ` Pascal Terjan
2005-07-26 6:06 ` Pascal Terjan
2005-07-26 11:10 ` Darryl Dixon
@ 2005-07-26 21:34 ` Fabrice Bellard
2 siblings, 0 replies; 6+ messages in thread
From: Fabrice Bellard @ 2005-07-26 21:34 UTC (permalink / raw)
To: qemu-devel
Hi,
I propose this patch:
--- kqemu-linux.c 25 Apr 2005 22:14:39 -0000 1.4
+++ kqemu-linux.c 25 Jul 2005 22:17:34 -0000
@@ -28,7 +28,13 @@
#define pfn_to_page(pfn) (mem_map + (pfn))
#endif
-#ifndef PAGE_KERNEL_EXEC
+#ifdef PAGE_KERNEL_EXEC
+#if defined(__i386__)
+/* problem : i386 kernels usually don't export __PAGE_KERNEL_EXEC */
+#undef PAGE_KERNEL_EXEC
+#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL & ~_PAGE_NX)
+#endif
+#else
#define PAGE_KERNEL_EXEC PAGE_KERNEL
#endif
Is it working with all kernels and x86/x86_64 ?
Fabrice.
Pascal Terjan wrote:
> On 7/26/05, Darryl Dixon <esrever_otua@pythonhacker.is-a-geek.net> wrote:
>
>>Hi All, Fabrice,
>>
>> Compiling the new kqemu-0.7.1 on Fedora Core 4 with kernel
>>2.6.12-1.1398_FC4 gives this error:
>>
>>-------------8<-------------------
>>[dixond@unixadmindazfc2 kqemu]$ make
>>make -C /lib/modules/2.6.12-1.1398_FC4/build M=`pwd` modules
>>make[1]: Entering directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
>> CC [M] /opt/src/qemu-0.7.1/kqemu/kqemu-linux.o
>>cp /opt/src/qemu-0.7.1/kqemu/kqemu-mod-i386.o /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
>> LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.o
>> Building modules, stage 2.
>> MODPOST
>>Warning: could not find /opt/src/qemu-0.7.1/kqemu/.kqemu-mod.o.cmd
>>for /opt/src/qemu-0.7.1/kqemu/kqemu-mod.o
>>*** Warning: "__PAGE_KERNEL_EXEC" [/opt/src/qemu-0.7.1/kqemu/kqemu.ko]
>>undefined!
>> CC /opt/src/qemu-0.7.1/kqemu/kqemu.mod.o
>> LD [M] /opt/src/qemu-0.7.1/kqemu/kqemu.ko
>>make[1]: Leaving directory `/usr/src/kernels/2.6.12-1.1398_FC4-i686'
>
>
> My understanding of the problem :
> on i386, in pgtable.h we have
> extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
> #define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
>
> an there is EXPORT_SYMBOL(__PAGE_KERNEL) but not for __PAGE_KERNEL_EXEC
>
> on x86_64 :
> #define __PAGE_KERNEL_EXEC \
> (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
> #define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
> #define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
>
> So, on i386 __PAGE_KERNEL_EXEC is an extern variable wich is not
> exported and not a macro.
>
> I wrote a patch on
> http://www.zarb.org/cgi-bin/viewcvs.cgi/plf/SPECS/non-free/dkms-kqemu/kqemu-0.7.1-PAGE_KERNEL_EXEC.patch?rev=1.1&view=markup
> but I don't know much kernel stuff so I have no idea how much it is
> broken :-)
>
>
> _______________________________________________
> Qemu-devel mailing list
> Qemu-devel@nongnu.org
> http://lists.nongnu.org/mailman/listinfo/qemu-devel
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2005-07-26 21:39 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2005-07-26 4:28 [Qemu-devel] Unknown symbol __PAGE_KERNEL_EXEC Darryl Dixon
2005-07-26 5:56 ` Pascal Terjan
2005-07-26 6:06 ` Pascal Terjan
2005-07-26 11:10 ` Darryl Dixon
2005-07-26 15:53 ` Sebastian Kaliszewski
2005-07-26 21:34 ` Fabrice Bellard
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