Re: [PATCH v3 3/3] xen: optimize xenbus driver for multiple concurrent xenstore accesses

From	Juergen Gross <jgross@suse.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v3 3/3] xen: optimize xenbus driver for multiple concurrent xenstore accesses
Date	2017-01-24 17:30 +0100
Message-ID	<t3c8O-6zx-11@gated-at.bofh.it> (permalink)
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On 24/01/17 14:47, Boris Ostrovsky wrote:
> On 01/23/2017 01:59 PM, Boris Ostrovsky wrote:
>> On 01/23/2017 05:09 AM, Juergen Gross wrote:
>>> Handling of multiple concurrent Xenstore accesses through xenbus driver
>>> either from the kernel or user land is rather lame today: xenbus is
>>> capable to have one access active only at one point of time.
>>>
>>>
> 
> 
> This patch appears to break save/restore:

Hmm, tried multiple times, but I can't reproduce this issue.

Anything special in the setup? I tried a 64 bit pv guest and did
"xl save".

Do I have to run some load in parallel?


Juergen

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[PATCH v3 0/3] xen: optimize xenbus performance Juergen Gross <jgross@suse.com> - 2017-01-23 11:10 +0100
  [PATCH v3 2/3] xen: modify xenstore watch event interface Juergen Gross <jgross@suse.com> - 2017-01-23 11:10 +0100
  [PATCH v3 1/3] xen: clean up xenbus internal headers Juergen Gross <jgross@suse.com> - 2017-01-23 11:20 +0100
  Re: [PATCH v3 3/3] xen: optimize xenbus driver for multiple  concurrent xenstore accesses Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-01-23 20:00 +0100
    Re: [PATCH v3 3/3] xen: optimize xenbus driver for multiple  concurrent xenstore accesses Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2017-01-24 14:50 +0100
      Re: [PATCH v3 3/3] xen: optimize xenbus driver for multiple  concurrent xenstore accesses Juergen Gross <jgross@suse.com> - 2017-01-24 17:30 +0100

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