From: Thomas Gleixner <tglx@linutronix.de>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Ingo Molnar <mingo@redhat.com>, "H . Peter Anvin" <hpa@zytor.com>,
x86@kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
jailhouse-dev@googlegroups.com
Subject: Re: [PATCH 05/10] x86: jailhouse: Set up timekeeping
Date: Fri, 17 Nov 2017 23:49:41 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1711172345220.2186@nanos> (raw)
In-Reply-To: <62f3fde8db44e5aedf934b5a753d448979f50082.1510817211.git.jan.kiszka@siemens.com>
On Thu, 16 Nov 2017, Jan Kiszka wrote:
> Calibrate the TSC and, where necessary, the APIC timer against the
> TMTIMER. We need our own implementation as neither the PIC nor the HPET
> are available, and the standard calibration routines try to make use of
> them.
Why is this needed at all?
The host the frequency already. So this can be done w/o pmtimer and extra
calibration routine.
Thanks,
tglx
next prev parent reply other threads:[~2017-11-17 22:49 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-16 7:26 [PATCH 00/10] x86: Add support for running as secondary Jailhouse guest Jan Kiszka
2017-11-16 7:26 ` [PATCH 01/10] x86/apic: Install an empty physflat_init_apic_ldr Jan Kiszka
2017-11-17 21:43 ` Thomas Gleixner
2017-11-16 7:26 ` [PATCH 02/10] x86: jailhouse: Add infrastructure for running in non-root cell Jan Kiszka
2017-11-17 21:54 ` Thomas Gleixner
2017-11-18 19:21 ` Jan Kiszka
2017-11-20 11:22 ` Thomas Gleixner
2017-11-16 7:26 ` [PATCH 03/10] x86: jailhouse: Enable APIC and SMP support Jan Kiszka
2017-11-17 22:42 ` Thomas Gleixner
2017-11-20 14:39 ` Konrad Rzeszutek Wilk
2017-11-20 17:26 ` Thomas Gleixner
2017-11-16 7:26 ` [PATCH 04/10] x86: jailhouse: Enable PMTIMER Jan Kiszka
2017-11-17 22:44 ` Thomas Gleixner
2017-11-16 7:26 ` [PATCH 05/10] x86: jailhouse: Set up timekeeping Jan Kiszka
2017-11-17 22:49 ` Thomas Gleixner [this message]
2017-11-18 19:23 ` Jan Kiszka
2017-11-20 11:24 ` Thomas Gleixner
2017-11-20 12:21 ` Jan Kiszka
2017-11-23 18:36 ` Thomas Gleixner
2017-11-23 19:48 ` Jan Kiszka
2017-11-16 7:26 ` [PATCH 06/10] x86: jailhouse: Avoid access of unsupported platform resources Jan Kiszka
2017-11-17 22:57 ` Thomas Gleixner
2017-11-17 22:59 ` Thomas Gleixner
2017-11-16 7:26 ` [PATCH 07/10] x86: jailhouse: Silence ACPI warning Jan Kiszka
2017-11-16 7:26 ` [PATCH 08/10] x86: jailhouse: Halt instead of failing to restart Jan Kiszka
2017-11-16 7:26 ` [PATCH 09/10] x86: jailhouse: Wire up IOAPIC for legacy UART ports Jan Kiszka
2017-11-17 23:14 ` Thomas Gleixner
2017-11-16 7:26 ` [PATCH 10/10] x86: jailhouse: Initialize PCI support Jan Kiszka
2017-11-18 21:15 ` [PATCH 00/10] x86: Add support for running as secondary Jailhouse guest H. Peter Anvin
2017-11-20 7:00 ` Jan Kiszka
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