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Re: [Qemu-ppc] [Qemu-devel] [PULL 5/5] bootdevice: add Error **errp argu
From: |
Gonglei |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] [PULL 5/5] bootdevice: add Error **errp argument for QEMUBootSetHandler |
Date: |
Wed, 17 Dec 2014 11:16:00 +0800 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:11.0) Gecko/20120327 Thunderbird/11.0.1 |
On 2014/12/16 21:23, Peter Maydell wrote:
> On 16 December 2014 at 13:04, Gonglei <address@hidden> wrote:
>> On 2014/12/16 20:42, Peter Maydell wrote:
>>
>>> On 16 December 2014 at 09:22, <address@hidden> wrote:
>>>> @@ -412,9 +411,7 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t
>>>> above_4g_mem_size,
>>>> object_property_set_link(OBJECT(machine), OBJECT(s),
>>>> "rtc_state", &error_abort);
>>>>
>>>> - if (set_boot_dev(s, boot_device)) {
>>>> - exit(1);
>>>> - }
>>>> + set_boot_dev(s, boot_device, &error_abort);
>>>
>>> This turns a "print error message and exit" path into
>>> an abort(), which doesn't seem right (this can be triggered
>>> by bad user input arguments, yes?). error_abort should
>>> only be used in cases where you would assert() if there
>>> was an error (ie where it would be a QEMU bug if it
>>> happened).
>>>
>>
>> Yes, agree. How does use a incremental patch fix this, Peter?
>>
>> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
>> index 99deba6..d7822b8 100644
>> --- a/hw/i386/pc.c
>> +++ b/hw/i386/pc.c
>> @@ -364,6 +364,7 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t
>> above_4g_mem_size,
>> FDriveType fd_type[2] = { FDRIVE_DRV_NONE, FDRIVE_DRV_NONE };
>> static pc_cmos_init_late_arg arg;
>> PCMachineState *pc_machine = PC_MACHINE(machine);
>> + Error *local_err = NULL;
>>
>> /* various important CMOS locations needed by PC/Bochs bios */
>>
>> @@ -411,7 +412,10 @@ void pc_cmos_init(ram_addr_t ram_size, ram_addr_t
>> above_4g_mem_size,
>> object_property_set_link(OBJECT(machine), OBJECT(s),
>> "rtc_state", &error_abort);
>>
>> - set_boot_dev(s, boot_device, &error_abort);
>> + set_boot_dev(s, boot_device, &local_err);
>> + if (local_err) {
>> + exit(1);
>> + }
>
> That won't print the error message at all...
>
Yes, I see. Thanks. I will send a new pull request :)
Regards,
-Gonglei