linux-kernel - Re: [PATCH v7 6/9] vmx: spp: Set up SPP paging table at vmentry/vmexit

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Message-ID: <20191121150400.GF17169@local-michael-cet-test>
Date:   Thu, 21 Nov 2019 23:04:00 +0800
From:   Yang Weijiang <weijiang.yang@...el.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Yang Weijiang <weijiang.yang@...el.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jmattson@...gle.com,
        sean.j.christopherson@...el.com, yu.c.zhang@...ux.intel.com,
        alazar@...defender.com, edwin.zhai@...el.com
Subject: Re: [PATCH v7 6/9] vmx: spp: Set up SPP paging table at
 vmentry/vmexit

On Thu, Nov 21, 2019 at 11:32:22AM +0100, Paolo Bonzini wrote:
> On 19/11/19 09:49, Yang Weijiang wrote:
> > @@ -5400,6 +5434,10 @@ int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t cr2, u64 error_code,
> >  		r = vcpu->arch.mmu->page_fault(vcpu, cr2,
> >  					       lower_32_bits(error_code),
> >  					       false);
> > +
> > +		if (vcpu->run->exit_reason == KVM_EXIT_SPP)
> > +			return 0;
> > +
> 
> Instead of this, please add a RET_PF_USERSPACE case to the RET_PF_* enum
> in mmu.c.
OK, will add it, thank you!
> 
> Paolo