On Wed, 6 Nov 2019 18:05:22 +0100 Janosch Frank <frankja@xxxxxxxxxxxxx> wrote: > On 11/6/19 5:48 PM, Cornelia Huck wrote: > > On Thu, 24 Oct 2019 07:40:52 -0400 > > Janosch Frank <frankja@xxxxxxxxxxxxx> wrote: > > > >> Description of changes that are necessary to move a KVM VM into > >> Protected Virtualization mode. > >> > >> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx> > >> --- > >> Documentation/virtual/kvm/s390-pv-boot.txt | 62 ++++++++++++++++++++++ > >> 1 file changed, 62 insertions(+) > >> create mode 100644 Documentation/virtual/kvm/s390-pv-boot.txt > > So... what do we IPL from? Is there still a need for the bios? > > > > (Sorry, I'm a bit confused here.) > > > > We load a blob via the bios (all methods are supported) and that blob > moves itself into protected mode. I.e. it has a small unprotected stub, > the rest is an encrypted kernel. > Ok. The magic is in the loaded kernel, and we don't need modifications to the bios?
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