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Re: [Qemu-devel] [PATCH] vga: squash build error in vga_update_memory_ac
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] [PATCH] vga: squash build error in vga_update_memory_access() |
Date: |
Wed, 24 Aug 2011 15:00:25 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2011-08-24 14:58, Avi Kivity wrote:
> On 08/24/2011 03:46 PM, Jan Kiszka wrote:
>>> +++ b/hw/vga.c
>>> @@ -179,6 +179,8 @@ static void vga_update_memory_access(VGACommonState *s)
>>> base = 0xb8000;
>>> size = 0x8000;
>>> break;
>>> + default:
>>> + abort();
>>> }
>>> region = g_malloc(sizeof(*region));
>>> memory_region_init_alias(region, "vga.chain4",&s->vram, offset,
>>> size);
>>
>> ...or just make the last case default?
>>
>
> No reason to make the code unobvious in this path, IMO. Eventually gcc
> will be able to drop the 4/5 bytes this patch adds to the object code.
diff --git a/hw/vga.c b/hw/vga.c
index 851fd68..125fb29 100644
--- a/hw/vga.c
+++ b/hw/vga.c
@@ -176,6 +176,7 @@ static void vga_update_memory_access(VGACommonState *s)
size = 0x8000;
break;
case 3:
+ default:
base = 0xb8000;
size = 0x8000;
break;
...is fairly common and well readable IMHO.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux