| 1 |
Sadako a écrit : |
| 2 |
>> 2008/12/21 Sadako <sadako@××××××××××××××.ca>: |
| 3 |
>> |
| 4 |
>>>> I have one virtualbox using VT extensions, and runs fine. I have used |
| 5 |
>>>> PaX in the guest with rsbac 1.3.7 and the noexec based on segmentation |
| 6 |
>>>> and all others on (peMRXS flags) and goes fine (with pageexec does not |
| 7 |
>>>> work, hangs at boot, so I switch segmexec). I think that you shouldn't |
| 8 |
>>>> have any troubles with kvm, if you have some try using virtualbox. |
| 9 |
>>>> I added -D_FORTIFY_SOURCE=2 to the cflags in make.conf compilation, it |
| 10 |
>>>> runs fine too and I think is safe. Not hangs at the moment. |
| 11 |
>>>> |
| 12 |
>>>> 2008/12/16 Romain BERGE <romain.berge@×××××.com>: |
| 13 |
>>>> |
| 14 |
>>>>> Hey all, |
| 15 |
>>>>> |
| 16 |
>>>>> I am wondering of using and AMD CPU with the AMD-V. |
| 17 |
>>>>> I wonder of using KVM to virtualise a few Hardened server. |
| 18 |
>>>>> |
| 19 |
>>>>> Someone used already KVM+ Hardened ? |
| 20 |
>>>>> |
| 21 |
>>>>> Working fine ? |
| 22 |
>>>>> |
| 23 |
>>>>> Thanks |
| 24 |
>>>>> |
| 25 |
>>>>> Regards |
| 26 |
>>>>> |
| 27 |
>>>>> |
| 28 |
>>>>> |
| 29 |
>>>> |
| 30 |
>>> Do you actually have the virtualbox _host_ running under |
| 31 |
>>> hardened-sources? |
| 32 |
>>> If so, could you please upload your kernel config somewhere? |
| 33 |
>>> |
| 34 |
>>> I've been trying to do the same, but upon trying to boot a guest (any |
| 35 |
>>> guest) via virtualbox the host box locks up, and I've tried everything I |
| 36 |
>>> can think of, including disabling _all_ grsec and pax options within the |
| 37 |
>>> kernel... |
| 38 |
>>> |
| 39 |
>>> |
| 40 |
>>> |
| 41 |
>>> |
| 42 |
>> Are you sure is related to the host?. Why?. |
| 43 |
>> |
| 44 |
>> |
| 45 |
>> |
| 46 |
> It's the host box which is locking up, and the host which is running |
| 47 |
> hardened-sources. |
| 48 |
> Booting the host with gentoo-sources, and it works fine. |
| 49 |
> |
| 50 |
> I believe others have had the same issue as me, however there is at least |
| 51 |
> one person who has had it working without any issues, see this fgo thread; |
| 52 |
> https://forums.gentoo.org/viewtopic-t-713850.html |
| 53 |
> |
| 54 |
> Unfortunately, that user informed me via PM that he no longer has the |
| 55 |
> kernel configs he used... |
| 56 |
> |
| 57 |
> |
| 58 |
> |
| 59 |
The CPU i plan to use also offer the NX bit. |
| 60 |
It is used by Pax for the segregation of the memory page. |
| 61 |
Thus it avoid to emulate the NX bit (which slows down the machine). |
| 62 |
|
| 63 |
Does someone know if the NX bit feature will also be used by my guest |
| 64 |
gentoo-hardened ? |
| 65 |
Or is it limited to the gentoo-hardened host ? |
| 66 |
|
| 67 |
Thanks |
| 68 |
|
| 69 |
PS: the question is in fact similar to every CPU feature (like |
| 70 |
SSE,SSE2,....) Are they reachable by the guest OS ? |
Archives