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Date: Thu, 04 Sep 2014 09:31:41 +0800
From: Chen Gang <gang.chen.5i5j@gmail.com>
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Subject: Re: [Qemu-devel] [PATCH] xen-hvm.c: Improve the return method for
	xen_hvm_init()
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To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: QEMU Trivial <qemu-trivial@nongnu.org>, xen-devel@lists.xensource.com, qemu-devel <qemu-devel@nongnu.org>

On 9/4/14 7:32, Stefano Stabellini wrote:
> On Wed, 3 Sep 2014, Chen Gang wrote:
>> On 9/3/14 0:22, Chen Gang wrote:
[...]
>>> xen_hvm_init() may also return -errno, which may let upper caller think
>>> more (e.g. free some other related resources and try again), although at
>>> present, all related upper callers still exit(1).
> 
> I think we should return -1 in the other cases too
> 

[...]
>>> @@ -998,6 +999,7 @@ int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size,
>>>      state->xenstore = xs_daemon_open();
>>>      if (state->xenstore == NULL) {
>>>          perror("xen: xenstore open");
>>> +        xc_evtchn_close(state->xce_handle);
>>>          g_free(state);
>>>          return -errno;
>>>      }
> 
> just return -1 and do the same in the above check (xce_handle ==
> XC_HANDLER_INITIAL_VALUE)
> 
> 

OK thanks, what you said sounds OK to me. I shall send patch v2 for it
within the 2 days (within 2014-09-05).

Thanks.
-- 
Chen Gang

Open, share, and attitude like air, water, and life which God blessed