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Date: Wed, 12 Feb 2020 12:40:36 +0000 From: linmiaohe <linmiaohe@...wei.com> To: Paolo Bonzini <pbonzini@...hat.com>, Vitaly Kuznetsov <vkuznets@...hat.com> CC: "kvm@...r.kernel.org" <kvm@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "x86@...nel.org" <x86@...nel.org>, "rkrcmar@...hat.com" <rkrcmar@...hat.com>, "sean.j.christopherson@...el.com" <sean.j.christopherson@...el.com>, "wanpengli@...cent.com" <wanpengli@...cent.com>, "jmattson@...gle.com" <jmattson@...gle.com>, "joro@...tes.org" <joro@...tes.org>, "tglx@...utronix.de" <tglx@...utronix.de>, "mingo@...hat.com" <mingo@...hat.com>, "bp@...en8.de" <bp@...en8.de>, "hpa@...or.com" <hpa@...or.com> Subject: Re: [PATCH] KVM: x86: remove duplicated KVM_REQ_EVENT request Paolo Bonzini <pbonzini@...hat.com> write: > On 07/02/20 10:05, Vitaly Kuznetsov wrote: >> kvm_make_request() from kvm_set_rflags() as it is not an obvious >> behavior (e.g. why kvm_rip_write() doens't do that and >> kvm_set_rflags() does ?) > >Because writing RFLAGS can change IF and therefore cause an interrupt to be injected. > Many thanks for your explanation. :) I thought it was because of Trap Flag.
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