From: "Jianyong Wu (Arm Technology China)" <Jianyong.Wu@arm.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"yangbo.lu@nxp.com" <yangbo.lu@nxp.com>,
"john.stultz@linaro.org" <john.stultz@linaro.org>,
"tglx@linutronix.de" <tglx@linutronix.de>,
"sean.j.christopherson@intel.com"
<sean.j.christopherson@intel.com>,
"maz@kernel.org" <maz@kernel.org>,
"richardcochran@gmail.com" <richardcochran@gmail.com>,
Mark Rutland <Mark.Rutland@arm.com>,
"will@kernel.org" <will@kernel.org>,
Suzuki Poulose <Suzuki.Poulose@arm.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Steve Capper <Steve.Capper@arm.com>,
"Kaly Xin (Arm Technology China)" <Kaly.Xin@arm.com>,
"Justin He (Arm Technology China)" <Justin.He@arm.com>,
nd <nd@arm.com>
Subject: RE: [PATCH v5 5/6] ptp: arm64: Enable ptp_kvm for arm64
Date: Wed, 16 Oct 2019 03:52:17 +0000 [thread overview]
Message-ID: <HE1PR0801MB167654440A67AF072E28FFFDF4920@HE1PR0801MB1676.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <da62c327-9402-9a5c-d694-c1a4378822e0@redhat.com>
Hi Paolo,
> -----Original Message-----
> From: Paolo Bonzini <pbonzini@redhat.com>
> Sent: Wednesday, October 16, 2019 12:39 AM
> To: Jianyong Wu (Arm Technology China) <Jianyong.Wu@arm.com>;
> netdev@vger.kernel.org; yangbo.lu@nxp.com; john.stultz@linaro.org;
> tglx@linutronix.de; sean.j.christopherson@intel.com; maz@kernel.org;
> richardcochran@gmail.com; Mark Rutland <Mark.Rutland@arm.com>;
> will@kernel.org; Suzuki Poulose <Suzuki.Poulose@arm.com>
> Cc: linux-kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org;
> kvmarm@lists.cs.columbia.edu; kvm@vger.kernel.org; Steve Capper
> <Steve.Capper@arm.com>; Kaly Xin (Arm Technology China)
> <Kaly.Xin@arm.com>; Justin He (Arm Technology China)
> <Justin.He@arm.com>; nd <nd@arm.com>
> Subject: Re: [PATCH v5 5/6] ptp: arm64: Enable ptp_kvm for arm64
>
> On 15/10/19 12:48, Jianyong Wu wrote:
> > +int kvm_arch_ptp_get_clock_generic(struct timespec64 *ts,
> > + struct arm_smccc_res *hvc_res) {
> > + u64 ns;
> > + ktime_t ktime_overall;
> > +
> > +
> arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_PTP_FU
> NC_ID,
> > + hvc_res);
> > + if ((long)(hvc_res->a0) < 0)
> > + return -EOPNOTSUPP;
> > +
> > + ktime_overall = hvc_res->a0 << 32 | hvc_res->a1;
> > + *ts = ktime_to_timespec64(ktime_overall);
> > +
> > + return 0;
> > +}
> > +
>
> This seems wrong, who uses kvm_arch_ptp_get_clock_fn?
>
This func used only by kvm_arch_ptp_get_clock and nothing to do with kvm_arch_ptp_get_clock_fn.
Also it can be merged into kvm_arch_ptp_get_clock.
> Paolo
next prev parent reply other threads:[~2019-10-16 3:52 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-15 10:48 [RFC PATCH v5 0/6] Enable ptp_kvm for arm64 Jianyong Wu
2019-10-15 10:48 ` [PATCH v5 1/6] psci: Export psci_ops.conduit symbol as modules will use it Jianyong Wu
2019-10-15 17:24 ` Mark Rutland
2019-10-16 3:54 ` Jianyong Wu (Arm Technology China)
2019-10-15 10:48 ` [PATCH v5 2/6] ptp: Reorganize ptp_kvm modules to make it arch-independent Jianyong Wu
2019-10-16 7:10 ` Paolo Bonzini
2019-10-16 10:04 ` Jianyong Wu (Arm Technology China)
2019-10-15 10:48 ` [PATCH v5 3/6] timekeeping: Add clocksource to system_time_snapshot Jianyong Wu
2019-10-15 16:37 ` Paolo Bonzini
2019-10-15 20:13 ` Thomas Gleixner
2019-10-15 22:36 ` Paolo Bonzini
2019-10-16 7:28 ` Thomas Gleixner
2019-10-16 9:48 ` Jianyong Wu (Arm Technology China)
2019-10-16 10:23 ` Thomas Gleixner
2019-10-15 20:12 ` Thomas Gleixner
2019-10-15 22:35 ` Paolo Bonzini
2019-10-16 10:01 ` Jianyong Wu (Arm Technology China)
2019-10-16 10:26 ` Thomas Gleixner
2019-10-15 10:48 ` [PATCH v5 4/6] psci: Add hvc call service for ptp_kvm Jianyong Wu
2019-10-16 7:24 ` Paolo Bonzini
2019-10-16 7:31 ` Thomas Gleixner
2019-10-16 7:42 ` Paolo Bonzini
2019-10-16 10:20 ` Jianyong Wu (Arm Technology China)
2019-10-15 10:48 ` [PATCH v5 5/6] ptp: arm64: Enable ptp_kvm for arm64 Jianyong Wu
2019-10-15 16:39 ` Paolo Bonzini
2019-10-16 3:52 ` Jianyong Wu (Arm Technology China) [this message]
2019-10-16 7:10 ` Paolo Bonzini
2019-10-16 7:13 ` Paolo Bonzini
2019-10-16 10:11 ` Jianyong Wu (Arm Technology China)
2019-10-15 10:48 ` [PATCH v5 6/6] kvm: arm64: Add capability check extension for ptp_kvm Jianyong Wu
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