On Wed, Nov 08, 2023, Alexander Graf wrote: > > On 08.11.23 12:18, Nicolas Saenz Julienne wrote: > > Save the length of the instruction that triggered an EPT violation in > > struct kvm_vcpu_arch. This will be used to populate Hyper-V VSM memory > > intercept messages. > > > > Signed-off-by: Nicolas Saenz Julienne <nsa...@amazon.com> > > > In v1, please do this for SVM as well :)
Why? KVM caches values on VMX because VMREAD is measurable slower than memory accesses, especially when running nested. SVM has no such problems. I wouldn't be surprised if adding a "cache" is actually less performant due to increased pressure and misses on the hardware cache.
