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From: Russell Currey <ruscur@russell.cc>
To: linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] pseries/eeh: Handle RTAS delay requests in configure_bridge
Date: Wed, 23 Mar 2016 11:28:26 +1100	[thread overview]
Message-ID: <1458692906.5945.2.camel@russell.cc> (raw)
In-Reply-To: <1458606895-24620-1-git-send-email-ruscur@russell.cc>

On Tue, 2016-03-22 at 11:34 +1100, Russell Currey wrote:
> In the configure_pe and configure_bridge RTAS calls, the spec states
> that values of 9900-9905 can be returned, indicating that software
> should delay for 10^x (where x is the last digit, i.e. 990x)
> milliseconds and attempt the call again. Currently, the kernel doesn't
> know about this, and respecting it fixes some PCI failures when the
> hypervisor is busy.
> 
> The delay is capped at 0.2 seconds.
> 
> Signed-off-by: Russell Currey <ruscur@russell.cc>

Forgot to mention this patch should go to stable, 3.10+

  reply	other threads:[~2016-03-23  0:28 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-03-22  0:34 [PATCH] pseries/eeh: Handle RTAS delay requests in configure_bridge Russell Currey
2016-03-23  0:28 ` Russell Currey [this message]
2016-03-23  0:38 ` Michael Ellerman
2016-03-23  2:52   ` Russell Currey
2016-03-23 10:39     ` Michael Ellerman
2016-03-23 23:56       ` Russell Currey

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