2016-02-09 0:29 GMT+08:00 Bruce Rogers <brog...@suse.com>: >>>> On 2/8/2016 at 08:09 AM, Paolo Bonzini <pbonz...@redhat.com> wrote: > >> >> On 03/02/2016 23:51, Bruce Rogers wrote: >>> >>> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c >>> index e2951b6..21507b4 100644 >>> --- a/arch/x86/kvm/vmx.c >>> +++ b/arch/x86/kvm/vmx.c >>> @@ -4993,8 +4993,8 @@ static void vmx_vcpu_reset(struct kvm_vcpu *vcpu, bool >> init_event) >>> vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid); >>> >>> cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET; >>> - vmx_set_cr0(vcpu, cr0); /* enter rmode */ >>> vmx->vcpu.arch.cr0 = cr0; >>> + vmx_set_cr0(vcpu, cr0); /* enter rmode */ >> >> Your comment that the assignment is redundant is correct, but I am >> afraid that this fix is also wrong. In particular, it would not cause >> exit_lmode and enter_rmode to be called. >> >> You are not describing which call to kvm_mmu_reset_context was messed >> up, so I'm not sure how your patch is fixing things. > > This is in the context of AP sending INIT to BSP with unrestricted_guest=N.
BSP will broadcast INIT-SIPI-SIPI sequence to APs during initialization, could you point out when "AP sending INIT to BSP" as you mentioned above in SDM? Regards, Wanpeng Li
