From: Jeremy Fitzhardinge <jeremy@goop.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: 2.6.22-rc1-mm1: boot failure under qemu
Date: Wed, 16 May 2007 01:23:24 -0700 [thread overview]
Message-ID: <464ABF7C.1000307@goop.org> (raw)
2.6.22-rc1-mm1 doesn't boot for me under qemu or kvm. Under qemu it
just hangs sullenly, but kvm gives a more useful dump:
(qemu) exception 13 (0)
rax 000000004050ffff rbx 0000000000009000 rcx 0000000000000000 rdx 0000000000007b00
rsi 000000000001fc05 rdi 0000000000040000 rsp 0000000000008f9a rbp 0000000000008100
r8 0000000000000000 r9 0000000000000000 r10 0000000000000000 r11 0000000000000000
r12 0000000000000000 r13 0000000000000000 r14 0000000000000000 r15 0000000000000000
rip 0000000000001062 rflags 00033046
cs 9000 (00090000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ds 9000 (00090000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
es 8100 (00081000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
ss 9000 (00090000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
fs 9900 (00099000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
gs 9000 (00090000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0)
tr 0000 (30850000/00002088 p 1 dpl 0 db 0 s 0 type b l 0 g 0 avl 0)
ldt 0000 (00000000/0000ffff p 1 dpl 0 db 0 s 0 type 2 l 0 g 0 avl 0)
gdt fa4e4/30
idt 0/3ff
cr0 60000010 cr2 0 cr3 0 cr4 0 cr8 0 efer 0
rip/eip 0x1062 seems to correspond to:
else
while (num != 0)
tmp[i++] = digits[do_div(num, base)];
1050: 66 89 f0 mov %esi,%eax
1053: 66 31 d2 xor %edx,%edx
1056: 66 f7 f5 div %ebp
1059: 66 89 c6 mov %eax,%esi
105c: 67 66 8b 44 24 28 addr32 mov 0x28(%esp),%eax
1062: 67 8a 14 10 addr32 mov (%eax,%edx,1),%dl
1066: 67 66 8b 44 24 2c addr32 mov 0x2c(%esp),%eax
106c: 67 88 54 04 3e addr32 mov %dl,0x3e(%esp,%eax,1)
0x1062 is in number (/home/jeremy/hg/xen/paravirt/linux/arch/i386/boot/printf.c:109).
104 i = 0;
105 if (num == 0)
106 tmp[i++] = '0';
107 else
108 while (num != 0)
109 tmp[i++] = digits[do_div(num, base)];
110 if (i > precision)
111 precision = i;
112 size -= precision;
113 if (!(type & (ZEROPAD + LEFT)))
I haven't tried booting on real hardware, but this is a definite
regression from the old setup code.
J
next reply other threads:[~2007-05-16 8:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-16 8:23 Jeremy Fitzhardinge [this message]
2007-05-16 15:46 ` 2.6.22-rc1-mm1: boot failure under qemu H. Peter Anvin
2007-05-16 16:30 ` Jeremy Fitzhardinge
2007-05-16 17:59 ` H. Peter Anvin
2007-05-16 18:24 ` Jeremy Fitzhardinge
2007-05-16 18:52 ` Nish Aravamudan
2007-05-16 19:07 ` H. Peter Anvin
2007-05-17 0:47 ` Jeremy Fitzhardinge
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