[BitVisor-users-en:34] Re: Fwd: Transparent hypervisor based encryption

[Aleksey M]

Thank you for your response. It helps.

I had heavily modified start up procedure in order to use it in my
environment. And bitvisor really can handle transparent encryption if i use
unmodified version. It seems than i screw up something a bit during
patching bitvisor for my evironment. So, sorry, this question was false
positive.

Regards,
Aleksey M.

On Tue, Jan 31, 2017 at 7:19 AM, Takahiro Shinagawa <shina at ecc.u-tokyo.ac.jp
> wrote:

> Hi Aleksey,
>
> I'm not sure why encryption is not working, but BitVisor fully supports
> AHCI with DMA. Showing defconfig (except the encryption key) may help
> solve the problem.
>
> By the way, how do you boot BitVisor and Linux in efi mode?
>
> Regards,
> Takahiro Shinagawa
>
> On 2017/01/28 17:10, Aleksey M wrote:
> > Hello.
> >
> > I try to use bitvisor for hypervisor based encryption. I have fully
> > encrypted disk that pluged into ahci capable controller. In my defconfig
> > i have set encryption key, host and device id and all, enabled storage
> > encryption during `make config`. I start my system in efi mode. And
> > indeed grub boot loader successfuly loaded from inside encrypted disk
> > and successfully load linux and initramfs. But when linux kernel get
> > control it see underlying encrypted disk directly, not transparantly
> > encrypted.
> >
> > So may be someone faced this situation before. Is this possible? My
> > guess that initial boot process uses legacy PIO mechanism for
> > communication with drive and linux kernel uses native AHCI DMA
> > mechanism. May be in bitvisor just not implemented completely correct
> > handling of DMA read and write interception.
> >
> > Thanx.
> >
> > Aleksey M.
> >
> >
> >
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> >
>
>
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