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

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Message-ID: <b67b07bf-7051-7dbc-2911-9268d72f0b70@redhat.com>
Date:   Thu, 21 Nov 2019 11:32:22 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Yang Weijiang <weijiang.yang@...el.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, jmattson@...gle.com,
        sean.j.christopherson@...el.com
Cc:     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 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.

Paolo