From: David Vrabel <david.vrabel@citrix.com>
To: "pang.xunlei" <pang.xunlei@linaro.org>, linux-kernel@vger.kernel.org
Cc: Alessandro Zummo <a.zummo@towertech.it>,
rtc-linux@googlegroups.com,
Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
John Stultz <john.stultz@linaro.org>,
xen-devel@lists.xenproject.org,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [RFC PATCH v2 09/11] time: Convert pvclock_read_wallclock() to use timespec64
Date: Thu, 30 Oct 2014 11:37:48 +0000 [thread overview]
Message-ID: <5452230C.6020504@citrix.com> (raw)
In-Reply-To: <1414667745-7703-10-git-send-email-pang.xunlei@linaro.org>
On 30/10/14 11:15, pang.xunlei wrote:
> As part of addressing 2038 safety for in-kernel uses, this patch
> creates no functional change, converts pvclock_read_wallclock()
> to use timespec64 instead of timespec.
Acked-by: David Vrabel <david.vrabel@citrix.com>
With one minor comment:
>
> /* get wallclock at system boot */
> do {
> version = wall_clock->version;
> rmb(); /* fetch version before time */
> - now.tv_sec = wall_clock->sec;
> + /* TODO: [2038 safety] wall_clock->sec uses time64_t */
> + now.tv_sec = (time64_t)wall_clock->sec;
The size of wall_clock->sec is fixed as part of the hypervisor ABI so
there's nothing TODO here (it would require extensions to the hypervisor
ABI and thus a new pvclock_read_wallclock64() call or similar).
David
next prev parent reply other threads:[~2014-10-30 11:37 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-30 11:15 [RFC PATCH v2 00/11] Convert do_settimeofday() to use timespec64 pang.xunlei
2014-10-30 11:15 ` [RFC PATCH v2 01/11] time: Add do_settimeofday64() safe version(using timespec64) pang.xunlei
2014-10-30 13:24 ` Thomas Gleixner
2014-10-30 13:24 ` Thomas Gleixner
2014-10-30 11:15 ` pang.xunlei
2014-10-30 11:15 ` [RFC PATCH v2 02/11] time: Add mktime64() safe version(using time64_t) pang.xunlei
2014-10-30 13:43 ` Thomas Gleixner
2014-10-30 13:43 ` Thomas Gleixner
2014-10-30 11:15 ` pang.xunlei
2014-10-30 11:15 ` [RFC PATCH v2 03/11] time: Add rtc_tm_to_time64() " pang.xunlei
2014-10-30 11:15 ` pang.xunlei
2014-10-30 13:55 ` Thomas Gleixner
2014-10-30 16:30 ` pang.xunlei
2014-10-30 16:30 ` pang.xunlei
2014-10-30 20:49 ` Thomas Gleixner
2014-10-30 20:49 ` Thomas Gleixner
2014-10-30 13:55 ` Thomas Gleixner
2014-10-30 11:15 ` [RFC PATCH v2 04/11] time: Add rtc_time_to_tm64() " pang.xunlei
2014-10-30 11:15 ` pang.xunlei
2014-10-30 14:07 ` Thomas Gleixner
2014-10-30 14:07 ` Thomas Gleixner
2014-10-30 11:15 ` [RFC PATCH v2 05/11] time: Convert all users of do_settimeofday() to use do_settimeofday64() pang.xunlei
2014-10-30 11:15 ` pang.xunlei
2014-10-30 14:49 ` Thomas Gleixner
2014-10-30 14:49 ` Thomas Gleixner
2014-10-30 15:27 ` John Stultz
2014-10-30 16:06 ` Thomas Gleixner
2014-10-30 16:06 ` Thomas Gleixner
2014-10-30 15:27 ` John Stultz
2014-10-30 11:15 ` [RFC PATCH v2 06/11] time: Remove do_settimeofday() pang.xunlei
2014-10-30 11:15 ` pang.xunlei
2014-10-30 11:15 ` [RFC PATCH v2 07/11] time: Convert alarm_set_rtc() to use timespec64 pang.xunlei
2014-10-30 14:52 ` Thomas Gleixner
2014-10-30 14:52 ` Thomas Gleixner
2014-10-30 11:15 ` pang.xunlei
2014-10-30 11:15 ` [RFC PATCH v2 08/11] time: Convert xen_read_wallclock() " pang.xunlei
2014-10-30 11:15 ` pang.xunlei
2014-10-30 11:30 ` David Vrabel
2014-10-30 14:58 ` [Xen-devel] " Thomas Gleixner
2014-10-30 14:58 ` Thomas Gleixner
2014-10-30 11:15 ` [RFC PATCH v2 09/11] time: Convert pvclock_read_wallclock() " pang.xunlei
2014-10-30 11:15 ` pang.xunlei
2014-10-30 11:37 ` David Vrabel [this message]
2014-10-30 14:57 ` Thomas Gleixner
2014-10-30 14:57 ` Thomas Gleixner
2014-10-30 11:15 ` [RFC PATCH v2 10/11] time: Convert x86_platform.set_wallclock()to " pang.xunlei
2014-10-30 11:15 ` pang.xunlei
2014-10-30 11:15 ` [RFC PATCH v2 11/11] time: Convert x86_platform.get_wallclock()to " pang.xunlei
2014-10-30 11:15 ` pang.xunlei
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