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Re: [Qemu-devel] [PATCH] xen-hvm.c: Improve the return method for xen_hv
From: |
Chen Gang |
Subject: |
Re: [Qemu-devel] [PATCH] xen-hvm.c: Improve the return method for xen_hvm_init() |
Date: |
Thu, 04 Sep 2014 09:31:41 +0800 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:31.0) Gecko/20100101 Thunderbird/31.1.0 |
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