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Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in conf
From: |
Chen Gang |
Subject: |
Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator() |
Date: |
Thu, 27 Mar 2014 18:01:06 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 |
On 03/27/2014 04:59 PM, Markus Armbruster wrote:
> Chen Gang <address@hidden> writes:
>
>> At present, each 'opt_name' of 'accel_list' is uniq with each other, so
>> 'buf' can only match one 'opt_name'.
>>
>> When drop into the matching code block, can 'break' outside related
>> 'for' looping after finish processing it (just like the other 'break'
>> within the matching block).
>>
>> After print "... not support for this target", it can avoid to print
>> "... accelerator does not exist".
>>
>>
>> Signed-off-by: Chen Gang <address@hidden>
>> ---
>> vl.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/vl.c b/vl.c
>> index 842e897..b4f98fa 100644
>> --- a/vl.c
>> +++ b/vl.c
>> @@ -2709,7 +2709,7 @@ static int configure_accelerator(QEMUMachine *machine)
>> if (!accel_list[i].available()) {
>> printf("%s not supported for this target\n",
>> accel_list[i].name);
>> - continue;
>> + break;
>> }
>> *(accel_list[i].allowed) = true;
>> ret = accel_list[i].init(machine);
>
> Works, because the opt_name in accel_list[] are distinct, as you
> explained in your commit message.
>
> Apropos commit message. You first explain what you do, and only then
> state the problem you're trying to solve. That's backwards. Start with
> the problem. Only then explain your solution, if it needs explaining.
> This one, I think, doesn't.
>
> Suggested commit message:
>
> vl: Report accelerator not supported for target more nicely
>
> When you ask for an accelerator not supported for your target, you
> get a bogus "accelerator does not exist" message:
>
> $ qemu-system-arm -machine none,accel=kvm
> KVM not supported for this target
> "kvm" accelerator does not exist.
> No accelerator found!
>
> Suppress it.
>
Thank you for your details, that sounds reasonable to me.
Next, I will/should notice start with the issue, and then explain the
solution.
Thanks.
--
Chen Gang
Open, share, and attitude like air, water, and life which God blessed
- [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Chen Gang, 2014/03/26
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Marcel Apfelbaum, 2014/03/27
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Markus Armbruster, 2014/03/27
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(),
Chen Gang <=
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Chen Gang, 2014/03/30
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Markus Armbruster, 2014/03/31
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Chen Gang, 2014/03/31
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Peter Maydell, 2014/03/31
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Chen Gang, 2014/03/31
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Peter Maydell, 2014/03/31
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Chen Gang, 2014/03/31
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Peter Maydell, 2014/03/31
- Re: [Qemu-devel] [PATCH] vl.c: use 'break' instead of 'continue' in configure_accelerator(), Chen Gang, 2014/03/31