From: Rabin Vincent <rabin@rab.in>
To: qemu-devel@nongnu.org
Cc: paul@codesourcery.com
Subject: [Qemu-devel] Re: [PATCH 1/2] arm_timer: reload timer when enabled
Date: Thu, 20 May 2010 22:57:42 +0530 [thread overview]
Message-ID: <20100520172741.GA28134@debian> (raw)
In-Reply-To: <1272793852-26260-1-git-send-email-rabin@rab.in>
On Sun, May 02, 2010 at 03:20:51PM +0530, Rabin Vincent wrote:
> Reload the timer when TimerControl is written, if the timer is to be
> enabled. Otherwise, if an earlier write to TimerLoad was done while
> periodic mode was not set, s->delta may incorrectly still have the value
> of the maximum limit instead of the value written to TimerLoad.
>
> This problem is evident on versatileap on current linux-next, which
> enables TIMER_CTRL_32BIT before writing to TimerLoad and then enabling
> periodic mode and starting the timer. This causes the first periodic
> tick to be scheduled to occur after 0xffffffff periods, leading to a
> perceived hang while the kernel waits for the first timer tick.
>
> Signed-off-by: Rabin Vincent <rabin@rab.in>
Could these patches please be applied? What was then linux-next is now
current Linux mainline, and it doesn't boot without this patch.
Rabin
next prev parent reply other threads:[~2010-05-20 17:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-02 9:50 [Qemu-devel] [PATCH 1/2] arm_timer: reload timer when enabled Rabin Vincent
2010-05-02 9:50 ` [Qemu-devel] [PATCH 2/2] arm_timer: fix oneshot mode Rabin Vincent
2010-05-21 10:00 ` Aurelien Jarno
2010-05-20 17:27 ` Rabin Vincent [this message]
2010-05-21 10:00 ` [Qemu-devel] [PATCH 1/2] arm_timer: reload timer when enabled Aurelien Jarno
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