Re: [PATCH 0/2] read kvmclock from guest memory if !correct_tsc_shift

On 1/20/23 02:11, Marcelo Tosatti wrote: Before kernel commit 78db6a5037965429c04d708281f35a6e5562d31b, kvm_guest_time_update() would use vcpu->virtual_tsc_khz to calculate tsc_shift value in the vcpus pvclock structure written to guest memory. To clarify, the problem is that kvm_guest_time_upd

[PATCH 0/2] read kvmclock from guest memory if !correct_tsc_shift

Before kernel commit 78db6a5037965429c04d708281f35a6e5562d31b, kvm_guest_time_update() would use vcpu->virtual_tsc_khz to calculate tsc_shift value in the vcpus pvclock structure written to guest memory. For those kernels, if vcpu->virtual_tsc_khz != tsc_khz (which can be the case when guest state