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([2001:b07:6468:f312:5e2c:eb9a:a8b6:fd3e]) by smtp.gmail.com with ESMTPSA id jl12sm2938613ejc.120.2021.10.01.07.41.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 Oct 2021 07:41:34 -0700 (PDT) Message-ID: <746cfc82-ee7c-eba2-4443-7faf53baf083@redhat.com> Date: Fri, 1 Oct 2021 16:41:33 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0 Subject: Re: [PATCH v8 4/7] KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK Content-Language: en-US From: Paolo Bonzini To: Oliver Upton , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Cc: Sean Christopherson , Marc Zyngier , Peter Shier , Jim Mattson , David Matlack , Ricardo Koller , Jing Zhang , Raghavendra Rao Anata , James Morse , Alexandru Elisei , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, Andrew Jones , Will Deacon , Catalin Marinas References: <20210916181538.968978-1-oupton@google.com> <20210916181538.968978-5-oupton@google.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 01/10/21 16:39, Paolo Bonzini wrote: > On 16/09/21 20:15, Oliver Upton wrote: >> +    if (data.flags & ~KVM_CLOCK_REALTIME) >>           return -EINVAL; > > Let's accept KVM_CLOCK_HOST_TSC here even though it's not used; there > may be programs that expect to send back to KVM_SET_CLOCK whatever they > got from KVM_GET_CLOCK. Nevermind, KVM_SET_CLOCK is already rejecting KVM_CLOCK_TSC_STABLE so no need to do that! 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([2001:b07:6468:f312:5e2c:eb9a:a8b6:fd3e]) by smtp.gmail.com with ESMTPSA id jl12sm2938613ejc.120.2021.10.01.07.41.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 01 Oct 2021 07:41:34 -0700 (PDT) Message-ID: <746cfc82-ee7c-eba2-4443-7faf53baf083@redhat.com> Date: Fri, 1 Oct 2021 16:41:33 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.1.0 Subject: Re: [PATCH v8 4/7] KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK From: Paolo Bonzini To: Oliver Upton , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Cc: Sean Christopherson , Marc Zyngier , Peter Shier , Jim Mattson , David Matlack , Ricardo Koller , Jing Zhang , Raghavendra Rao Anata , James Morse , Alexandru Elisei , Suzuki K Poulose , linux-arm-kernel@lists.infradead.org, Andrew Jones , Will Deacon , Catalin Marinas References: <20210916181538.968978-1-oupton@google.com> <20210916181538.968978-5-oupton@google.com> In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211001_074138_713470_47C7A514 X-CRM114-Status: UNSURE ( 8.31 ) X-CRM114-Notice: Please train this message. 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