This is a new version of KVM_GET_SREGS / KVM_SET_SREGS ioctls,
aiming to replace them.
It has the following changes:
* Has flags for future extensions
* Has vcpu's PDPTS, which allows to save/restore them on migration.
* Lacks obsolete interrupt bitmap (done now via KVM_SET_VCPU_EVENTS)
Just a quick review on the API:
On 01/04/21 16:18, Maxim Levitsky wrote:
+struct kvm_sregs2 {
+ /* out (KVM_GET_SREGS2) / in (KVM_SET_SREGS2) */
+ struct kvm_segment cs, ds, es, fs, gs, ss;
+ struct kvm_segment tr, ldt;
+ struct kvm_dtable gdt, idt;
+ __u64 cr0,
On Thu, 2021-04-01 at 16:44 +0200, Paolo Bonzini wrote:
> Just a quick review on the API:
>
> On 01/04/21 16:18, Maxim Levitsky wrote:
> > +struct kvm_sregs2 {
> > + /* out (KVM_GET_SREGS2) / in (KVM_SET_SREGS2) */
> > + struct kvm_segment cs, ds, es, fs, gs, ss;
> > + struct kvm_segment
On 01/04/21 19:10, Maxim Levitsky wrote:
I haven't yet studied in depth the locking that is used in the kvm,
so I put this to be on the safe side.
I looked at it a bit and it looks like the pdptr reading code takes
this lock because it accesses the memslots, which is not done here,
and
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