[ANNOUNCE] kvm-44 release

[ANNOUNCE] kvm-44 release

[Avi Kivity]

An important fix to guest smp (it boots now!), and a performance 
improvement on Intel hardware.  I get about 5% boost on a kernel build.

There's a new module parameter to kvm-intel.ko that can disable this 
mechanism, bypass_guest_pf.  Load the module with bypass_guest_pf=0 to 
disable the optimization.  It shouldn't be necessary to do that on 
current processors; it's mostly to protect kvm against changes in 
hardware since the patch uses reserved bits.

As usual, if you have an issue please try with -no-kvm-irqchip and report.

Changes from kvm-43:
- fix smp guest boot
- fix IDE emulation bug with newer guest kernels (S.Çağlar Onur)
- support VMware server as guest (Ryan Harper)
- fix smp race in shadow code (Izik Eidus)
- allow guest page faults to bypass kvm on Intel (performance boost)

Notes:
     If you use the modules bundled with kvm-44, you can use any version
of Linux from 2.6.9 upwards.
     If you use the modules bundled with Linux 2.6.20, you need to use
kvm-12.
     If you use the modules bundled with Linux 2.6.21, you need to use
kvm-17.
     Modules from Linux 2.6.22 and up will work with any kvm version from
kvm-22.  Some features may only be available in newer releases.
     For best performance, use Linux 2.6.23-rc2 or later as the host.

http://kvm.qumranet.com



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Re: [ANNOUNCE] kvm-44 release

[Farkas Levente]

Avi Kivity wrote:
> An important fix to guest smp (it boots now!), and a performance 
> improvement on Intel hardware.  I get about 5% boost on a kernel build.
> 
> There's a new module parameter to kvm-intel.ko that can disable this 
> mechanism, bypass_guest_pf.  Load the module with bypass_guest_pf=0 to 
> disable the optimization.  It shouldn't be necessary to do that on 
> current processors; it's mostly to protect kvm against changes in 
> hardware since the patch uses reserved bits.

make[1]: Entering directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
  LD      /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/built-in.o
  CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/svm.o
  CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.o
  CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx-debug.o
  CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/kvm_main.o
  CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o
/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1152: error:
expected '=', ',', ';', 'asm' or '__attribute__' before
'last_updated_pte_accessed'
/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c: In function
'kvm_mmu_pte_write':
/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1180: error:
implicit declaration of function 'last_updated_pte_accessed'
make[2]: ***
[/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o] Error 1
make[1]: ***
[_module_/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel] Error 2
make[1]: Leaving directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
make: *** [all] Error 2

-- 
  Levente                               "Si vis pacem para bellum!"

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Re: [ANNOUNCE] kvm-44 release

[Avi Kivity]

Farkas Levente wrote:
> Avi Kivity wrote:
>   
>> An important fix to guest smp (it boots now!), and a performance 
>> improvement on Intel hardware.  I get about 5% boost on a kernel build.
>>
>> There's a new module parameter to kvm-intel.ko that can disable this 
>> mechanism, bypass_guest_pf.  Load the module with bypass_guest_pf=0 to 
>> disable the optimization.  It shouldn't be necessary to do that on 
>> current processors; it's mostly to protect kvm against changes in 
>> hardware since the patch uses reserved bits.
>>     
>
> make[1]: Entering directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
>   LD      /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/built-in.o
>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/svm.o
>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.o
>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx-debug.o
>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/kvm_main.o
>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o
> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1152: error:
> expected '=', ',', ';', 'asm' or '__attribute__' before
> 'last_updated_pte_accessed'
> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c: In function
> 'kvm_mmu_pte_write':
> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1180: error:
> implicit declaration of function 'last_updated_pte_accessed'
> make[2]: ***
> [/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o] Error 1
> make[1]: ***
> [_module_/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel] Error 2
> make[1]: Leaving directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
> make: *** [all] Error 2
>
>   

Try adding '#define bool _Bool' to kernel/external-module-compat.h, and 
let us know. I'll fix it for kvm-45.


-- 
error compiling committee.c: too many arguments to function


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Re: [ANNOUNCE] kvm-44 release

[Farkas Levente]

Avi Kivity wrote:
> Farkas Levente wrote:
>> Avi Kivity wrote:
>>  
>>> An important fix to guest smp (it boots now!), and a performance
>>> improvement on Intel hardware.  I get about 5% boost on a kernel build.
>>>
>>> There's a new module parameter to kvm-intel.ko that can disable this
>>> mechanism, bypass_guest_pf.  Load the module with bypass_guest_pf=0
>>> to disable the optimization.  It shouldn't be necessary to do that on
>>> current processors; it's mostly to protect kvm against changes in
>>> hardware since the patch uses reserved bits.
>>>     
>>
>> make[1]: Entering directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
>>   LD     
>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/built-in.o
>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/svm.o
>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.o
>>   CC [M] 
>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx-debug.o
>>   CC [M] 
>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/kvm_main.o
>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o
>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1152: error:
>> expected '=', ',', ';', 'asm' or '__attribute__' before
>> 'last_updated_pte_accessed'
>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c: In function
>> 'kvm_mmu_pte_write':
>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1180: error:
>> implicit declaration of function 'last_updated_pte_accessed'
>> make[2]: ***
>> [/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o] Error 1
>> make[1]: ***
>> [_module_/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel] Error 2
>> make[1]: Leaving directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
>> make: *** [all] Error 2
>>
>>   
> 
> Try adding '#define bool _Bool' to kernel/external-module-compat.h, and
> let us know. I'll fix it for kvm-45.

i just put after the #include <linux/smp.h> but it doesn't help.

ps. anyway if you check my dail snapshot build you can see there is no
build after 22th (probably because of this. anyway i see that the
snapshot are generated at 0:30, but it which timezone?

-- 
  Levente                               "Si vis pacem para bellum!"

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This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2005.
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Re: [ANNOUNCE] kvm-44 release

[Avi Kivity]

Farkas Levente wrote:
> Avi Kivity wrote:
>   
>> Farkas Levente wrote:
>>     
>>> Avi Kivity wrote:
>>>  
>>>       
>>>> An important fix to guest smp (it boots now!), and a performance
>>>> improvement on Intel hardware.  I get about 5% boost on a kernel build.
>>>>
>>>> There's a new module parameter to kvm-intel.ko that can disable this
>>>> mechanism, bypass_guest_pf.  Load the module with bypass_guest_pf=0
>>>> to disable the optimization.  It shouldn't be necessary to do that on
>>>> current processors; it's mostly to protect kvm against changes in
>>>> hardware since the patch uses reserved bits.
>>>>     
>>>>         
>>> make[1]: Entering directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
>>>   LD     
>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/built-in.o
>>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/svm.o
>>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.o
>>>   CC [M] 
>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx-debug.o
>>>   CC [M] 
>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/kvm_main.o
>>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o
>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1152: error:
>>> expected '=', ',', ';', 'asm' or '__attribute__' before
>>> 'last_updated_pte_accessed'
>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c: In function
>>> 'kvm_mmu_pte_write':
>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1180: error:
>>> implicit declaration of function 'last_updated_pte_accessed'
>>> make[2]: ***
>>> [/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o] Error 1
>>> make[1]: ***
>>> [_module_/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel] Error 2
>>> make[1]: Leaving directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
>>> make: *** [all] Error 2
>>>
>>>   
>>>       
>> Try adding '#define bool _Bool' to kernel/external-module-compat.h, and
>> let us know. I'll fix it for kvm-45.
>>     
>
> i just put after the #include <linux/smp.h> but it doesn't help.
>
>   

That should have worked.  How about '#define bool int'?


> ps. anyway if you check my dail snapshot build you can see there is no
> build after 22th (probably because of this. anyway i see that the
> snapshot are generated at 0:30, but it which timezone?
>
>   

IST (UTC+2)

-- 
error compiling committee.c: too many arguments to function


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Re: [ANNOUNCE] kvm-44 release

[Farkas Levente]

Avi Kivity wrote:
> Farkas Levente wrote:
>> Avi Kivity wrote:
>>  
>>> Farkas Levente wrote:
>>>    
>>>> Avi Kivity wrote:
>>>>  
>>>>      
>>>>> An important fix to guest smp (it boots now!), and a performance
>>>>> improvement on Intel hardware.  I get about 5% boost on a kernel
>>>>> build.
>>>>>
>>>>> There's a new module parameter to kvm-intel.ko that can disable this
>>>>> mechanism, bypass_guest_pf.  Load the module with bypass_guest_pf=0
>>>>> to disable the optimization.  It shouldn't be necessary to do that on
>>>>> current processors; it's mostly to protect kvm against changes in
>>>>> hardware since the patch uses reserved bits.
>>>>>             
>>>> make[1]: Entering directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
>>>>   LD    
>>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/built-in.o
>>>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/svm.o
>>>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.o
>>>>   CC [M]
>>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx-debug.o
>>>>   CC [M]
>>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/kvm_main.o
>>>>   CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o
>>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1152:
>>>> error:
>>>> expected '=', ',', ';', 'asm' or '__attribute__' before
>>>> 'last_updated_pte_accessed'
>>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c: In
>>>> function
>>>> 'kvm_mmu_pte_write':
>>>> /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.c:1180:
>>>> error:
>>>> implicit declaration of function 'last_updated_pte_accessed'
>>>> make[2]: ***
>>>> [/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/mmu.o] Error 1
>>>> make[1]: ***
>>>> [_module_/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel] Error 2
>>>> make[1]: Leaving directory `/usr/src/kernels/2.6.18-8.1.10.el5-x86_64'
>>>> make: *** [all] Error 2
>>>>
>>>>         
>>> Try adding '#define bool _Bool' to kernel/external-module-compat.h, and
>>> let us know. I'll fix it for kvm-45.
>>>     
>>
>> i just put after the #include <linux/smp.h> but it doesn't help.
>>
>>   
> 
> That should have worked.  How about '#define bool int'?

with _Bool:
  CC [M]  /home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.o
/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.c:39: error:
expected ')' before '&' token
/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.c:39: error:
'param_set__Bool' undeclared here (not in a function)
/home/robot/rpm/BUILD/kvm-kmod-44/_kmod_build_/kernel/vmx.c:39: error:
'param_get__Bool' undeclared here (not in a function)
with int it's working

-- 
  Levente                               "Si vis pacem para bellum!"

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