From: Cyrill Gorcunov <gorcunov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Christopher Covington <cov-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Michael Kerrisk
<mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Andrew Morton
<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>,
Andrey Vagin <avagin-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>,
Pavel Emelyanov <xemul-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>,
Vladimir Davydov
<vdavydov-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>,
Linux ARM kernel mailing list
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>
Subject: Re: [patch 3/4] timerfd: Implement timerfd_ioctl method to restore timerfd_ctx::ticks
Date: Wed, 2 Jul 2014 21:04:16 +0400 [thread overview]
Message-ID: <20140702170416.GG12440@moon> (raw)
In-Reply-To: <53B4382F.9030908-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
On Wed, Jul 02, 2014 at 12:49:51PM -0400, Christopher Covington wrote:
> >
> > +#ifdef CONFIG_CHECKPOINT_RESTORE
> > +static long timerfd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> > +{
> > + struct timerfd_ctx *ctx = file->private_data;
> > + int ret = 0;
> > +
> > + switch (cmd) {
> > + case TFD_IOC_SET_TICKS: {
> > + u64 ticks;
> > +
> > + if (get_user(ticks, (u64 __user *)arg))
>
> 64-bit get_user is currently unsupported on ARM, although it appears work is
> ongoing [1].
>
> 1. https://lkml.org/lkml/2014/6/17/260
Thanks for info, Christopher! What arm camp is using then, copy-from-user?
WARNING: multiple messages have this Message-ID (diff)
From: gorcunov@gmail.com (Cyrill Gorcunov)
To: linux-arm-kernel@lists.infradead.org
Subject: [patch 3/4] timerfd: Implement timerfd_ioctl method to restore timerfd_ctx::ticks
Date: Wed, 2 Jul 2014 21:04:16 +0400 [thread overview]
Message-ID: <20140702170416.GG12440@moon> (raw)
In-Reply-To: <53B4382F.9030908@codeaurora.org>
On Wed, Jul 02, 2014 at 12:49:51PM -0400, Christopher Covington wrote:
> >
> > +#ifdef CONFIG_CHECKPOINT_RESTORE
> > +static long timerfd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> > +{
> > + struct timerfd_ctx *ctx = file->private_data;
> > + int ret = 0;
> > +
> > + switch (cmd) {
> > + case TFD_IOC_SET_TICKS: {
> > + u64 ticks;
> > +
> > + if (get_user(ticks, (u64 __user *)arg))
>
> 64-bit get_user is currently unsupported on ARM, although it appears work is
> ongoing [1].
>
> 1. https://lkml.org/lkml/2014/6/17/260
Thanks for info, Christopher! What arm camp is using then, copy-from-user?
WARNING: multiple messages have this Message-ID (diff)
From: Cyrill Gorcunov <gorcunov@gmail.com>
To: Christopher Covington <cov@codeaurora.org>
Cc: linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
Michael Kerrisk <mtk.manpages@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Andrey Vagin <avagin@openvz.org>,
Pavel Emelyanov <xemul@parallels.com>,
Vladimir Davydov <vdavydov@parallels.com>,
Linux ARM kernel mailing list
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [patch 3/4] timerfd: Implement timerfd_ioctl method to restore timerfd_ctx::ticks
Date: Wed, 2 Jul 2014 21:04:16 +0400 [thread overview]
Message-ID: <20140702170416.GG12440@moon> (raw)
In-Reply-To: <53B4382F.9030908@codeaurora.org>
On Wed, Jul 02, 2014 at 12:49:51PM -0400, Christopher Covington wrote:
> >
> > +#ifdef CONFIG_CHECKPOINT_RESTORE
> > +static long timerfd_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
> > +{
> > + struct timerfd_ctx *ctx = file->private_data;
> > + int ret = 0;
> > +
> > + switch (cmd) {
> > + case TFD_IOC_SET_TICKS: {
> > + u64 ticks;
> > +
> > + if (get_user(ticks, (u64 __user *)arg))
>
> 64-bit get_user is currently unsupported on ARM, although it appears work is
> ongoing [1].
>
> 1. https://lkml.org/lkml/2014/6/17/260
Thanks for info, Christopher! What arm camp is using then, copy-from-user?
next prev parent reply other threads:[~2014-07-02 17:04 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-23 18:54 [patch 0/4] timerfd c/r support, v4 Cyrill Gorcunov
2014-06-23 18:54 ` [patch 1/4] timerfd: Implement show_fdinfo method Cyrill Gorcunov
[not found] ` <20140623190345.354980826-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
2014-06-24 22:02 ` Cyrill Gorcunov
2014-06-24 22:02 ` Cyrill Gorcunov
2014-06-23 18:54 ` [patch 2/4] docs: procfs -- Document timerfd output Cyrill Gorcunov
2014-06-23 18:54 ` [patch 3/4] timerfd: Implement timerfd_ioctl method to restore timerfd_ctx::ticks Cyrill Gorcunov
2014-06-23 18:54 ` Cyrill Gorcunov
[not found] ` <20140623190345.499956567-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
2014-06-24 22:03 ` Cyrill Gorcunov
2014-06-24 22:03 ` Cyrill Gorcunov
2014-07-02 16:49 ` Christopher Covington
2014-07-02 16:49 ` Christopher Covington
[not found] ` <53B4382F.9030908-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2014-07-02 17:04 ` Cyrill Gorcunov [this message]
2014-07-02 17:04 ` Cyrill Gorcunov
2014-07-02 17:04 ` Cyrill Gorcunov
2014-07-02 19:01 ` Arnd Bergmann
2014-07-02 19:01 ` Arnd Bergmann
2014-07-02 19:07 ` Cyrill Gorcunov
2014-07-02 19:07 ` Cyrill Gorcunov
2014-07-02 19:07 ` Cyrill Gorcunov
2014-07-02 19:36 ` Cyrill Gorcunov
2014-07-02 19:36 ` Cyrill Gorcunov
2014-07-02 19:36 ` Cyrill Gorcunov
2014-06-23 18:54 ` [patch 4/4] timerfd.2: Add ioctl method description Cyrill Gorcunov
[not found] ` <20140623185431.396309193-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org>
2014-06-23 19:44 ` [patch 0/4] timerfd c/r support, v4 Andrew Vagin
2014-06-23 19:44 ` Andrew Vagin
2014-06-30 19:43 ` Cyrill Gorcunov
2014-07-15 13:54 ` Cyrill Gorcunov
2014-07-15 16:11 ` Thomas Gleixner
2014-07-15 16:11 ` Thomas Gleixner
2014-07-15 16:25 ` Cyrill Gorcunov
2014-07-15 16:25 ` Cyrill Gorcunov
2014-07-15 21:08 ` Thomas Gleixner
2014-07-15 21:08 ` Thomas Gleixner
2014-07-15 21:14 ` Cyrill Gorcunov
2014-07-15 21:14 ` Cyrill Gorcunov
2014-07-15 21:16 ` Thomas Gleixner
2014-07-15 21:16 ` Thomas Gleixner
2014-07-15 21:18 ` Cyrill Gorcunov
2014-07-15 21:18 ` Cyrill Gorcunov
2014-07-15 21:20 ` Thomas Gleixner
2014-07-15 21:20 ` Thomas Gleixner
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