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Re: [Qemu-devel] Re: [PATCH] pc: disable the BOCHS BIOS panic port


From: Alexander Graf
Subject: Re: [Qemu-devel] Re: [PATCH] pc: disable the BOCHS BIOS panic port
Date: Mon, 15 Nov 2010 11:09:24 +0100

On 15.11.2010, at 10:53, Bernhard Kohl wrote:

> Am 01.09.2010 16:44, schrieb Bernhard Kohl:
>> We have an OS which writes to port 0x400 when probing for special hardware.
>> This causes an exit of the VM. With SeaBIOS this port isn't used anyway.
>> 
>> Signed-off-by: Bernhard Kohl<address@hidden>
>> ---
>>  hw/pc.c |    2 --
>>  1 files changed, 0 insertions(+), 2 deletions(-)
>> 
>> diff --git a/hw/pc.c b/hw/pc.c
>> index 69b13bf..3f81229 100644
>> --- a/hw/pc.c
>> +++ b/hw/pc.c
>> @@ -430,8 +430,6 @@ static void bochs_bios_write(void *opaque, uint32_t 
>> addr, uint32_t val)
>>          /* Bochs BIOS messages */
>>      case 0x400:
>>      case 0x401:
>> -        fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
>> -        exit(1);
>>      case 0x402:
>>      case 0x403:
>>  #ifdef DEBUG_BIOS
>>   
> 
> Hi,
> 
> could you please look at this?

This patch makes that port that was silent before print debug output if 
DEBUG_BIOS is enabled which might be confusing.

How about something like

case 0x400:
case 0x401:
    /* used to be panic, now unused */
    break;


Alex




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