From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "Stephen Hemminger" <sthemmin@microsoft.com>,
kvm@vger.kernel.org, "Radim Krčmář" <rkrcmar@redhat.com>,
"Haiyang Zhang" <haiyangz@microsoft.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>,
"Ingo Molnar" <mingo@redhat.com>,
"Roman Kagan" <rkagan@virtuozzo.com>,
"Andy Lutomirski" <luto@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
devel@linuxdriverproject.org,
"Mohammed Gamal" <mmorsy@redhat.com>
Subject: Re: [PATCH v2 2/7] x86/hyper-v: add a function to read both TSC and TSC page value simulateneously
Date: Mon, 15 Jan 2018 11:45:01 +0100 [thread overview]
Message-ID: <87tvvnieoi.fsf@vitty.brq.redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1801142134370.2371@nanos> (Thomas Gleixner's message of "Sun, 14 Jan 2018 21:35:27 +0100 (CET)")
Thomas Gleixner <tglx@linutronix.de> writes:
> On Wed, 13 Dec 2017, Vitaly Kuznetsov wrote:
>
>> This is going to be used from KVM code where we need to get both
>> TSC and TSC page value.
>>
>> When Hyper-V code is compiled out just return rdtsc(), this will allow us
>> to avoid ugly ifdefs in non-Hyper-V code.
>
> That's not what the patch implements....
>
Not anymore, thanks, will fix the description.
>> +static inline u64 hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg,
>> + u64 *cur_tsc)
>> +{
>> + BUG();
>> + return U64_MAX;
>> +}
--
Vitaly
WARNING: multiple messages have this Message-ID (diff)
From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: "Stephen Hemminger" <sthemmin@microsoft.com>,
kvm@vger.kernel.org, "Radim Krčmář" <rkrcmar@redhat.com>,
"Haiyang Zhang" <haiyangz@microsoft.com>,
x86@kernel.org, linux-kernel@vger.kernel.org,
devel@linuxdriverproject.org,
"Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>,
"Ingo Molnar" <mingo@redhat.com>,
"Roman Kagan" <rkagan@virtuozzo.com>,
"Andy Lutomirski" <luto@kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Mohammed Gamal" <mmorsy@redhat.com>
Subject: Re: [PATCH v2 2/7] x86/hyper-v: add a function to read both TSC and TSC page value simulateneously
Date: Mon, 15 Jan 2018 11:45:01 +0100 [thread overview]
Message-ID: <87tvvnieoi.fsf@vitty.brq.redhat.com> (raw)
In-Reply-To: <alpine.DEB.2.20.1801142134370.2371@nanos> (Thomas Gleixner's message of "Sun, 14 Jan 2018 21:35:27 +0100 (CET)")
Thomas Gleixner <tglx@linutronix.de> writes:
> On Wed, 13 Dec 2017, Vitaly Kuznetsov wrote:
>
>> This is going to be used from KVM code where we need to get both
>> TSC and TSC page value.
>>
>> When Hyper-V code is compiled out just return rdtsc(), this will allow us
>> to avoid ugly ifdefs in non-Hyper-V code.
>
> That's not what the patch implements....
>
Not anymore, thanks, will fix the description.
>> +static inline u64 hv_read_tsc_page_tsc(const struct ms_hyperv_tsc_page *tsc_pg,
>> + u64 *cur_tsc)
>> +{
>> + BUG();
>> + return U64_MAX;
>> +}
--
Vitaly
next prev parent reply other threads:[~2018-01-15 10:45 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-13 15:09 [PATCH v2 0/7] x86/kvm/hyperv: stable clocksorce for L2 guests when running nested KVM on Hyper-V Vitaly Kuznetsov
2017-12-13 15:09 ` Vitaly Kuznetsov
2017-12-13 15:09 ` [PATCH v2 1/7] x86/hyper-v: check for required priviliges in hyperv_init() Vitaly Kuznetsov
2017-12-13 15:09 ` Vitaly Kuznetsov
2018-01-14 20:32 ` Thomas Gleixner
2018-01-14 20:32 ` Thomas Gleixner
2017-12-13 15:09 ` [PATCH v2 2/7] x86/hyper-v: add a function to read both TSC and TSC page value simulateneously Vitaly Kuznetsov
2018-01-14 20:35 ` Thomas Gleixner
2018-01-14 20:35 ` Thomas Gleixner
2018-01-15 10:45 ` Vitaly Kuznetsov [this message]
2018-01-15 10:45 ` Vitaly Kuznetsov
2017-12-13 15:09 ` [PATCH v2 3/7] x86/hyper-v: reenlightenment notifications support Vitaly Kuznetsov
2017-12-13 15:09 ` Vitaly Kuznetsov
2018-01-14 20:42 ` Thomas Gleixner
2017-12-13 15:09 ` [PATCH v2 4/7] x86/hyper-v: redirect reenlightment notifications on CPU offlining Vitaly Kuznetsov
2017-12-13 15:09 ` Vitaly Kuznetsov
2018-01-14 20:44 ` Thomas Gleixner
2018-01-15 10:44 ` Vitaly Kuznetsov
2018-01-15 10:44 ` Vitaly Kuznetsov
2017-12-13 15:09 ` [PATCH v2 5/7] x86/irq: Count Hyper-V reenlightenment interrupts Vitaly Kuznetsov
2017-12-13 15:09 ` Vitaly Kuznetsov
2017-12-13 15:09 ` [PATCH v2 6/7] x86/kvm: pass stable clocksource to guests when running nested on Hyper-V Vitaly Kuznetsov
2017-12-13 15:09 ` Vitaly Kuznetsov
2017-12-13 15:09 ` [PATCH v2 7/7] x86/kvm: support Hyper-V reenlightenment Vitaly Kuznetsov
2017-12-13 15:09 ` Vitaly Kuznetsov
2017-12-15 9:01 ` [PATCH v2 0/7] x86/kvm/hyperv: stable clocksorce for L2 guests when running nested KVM on Hyper-V Paolo Bonzini
2017-12-15 9:30 ` Vitaly Kuznetsov
2018-01-03 14:57 ` Vitaly Kuznetsov
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