From: Paolo Bonzini <pbonzini@redhat.com>
To: duy.nguyen@dektech.com.au
Cc: kvm@vger.kernel.org
Subject: Re: Emulation failure
Date: Mon, 19 Aug 2013 11:27:57 +0200 [thread overview]
Message-ID: <5211E51D.8080009@redhat.com> (raw)
In-Reply-To: <1376874854.25492.10.camel@localhost>
Il 19/08/2013 03:14, Duy Nguyen TN ha scritto:
>
> I got this error with qem-kvm-0.15.1 on kernel 3.1.0-1.2-desktop
> (OpenSUSE 12.1). I know I should rerun it with latest kernel/qemu but I
> hope maybe this rings a bell or something, because it'll take some time
> for me to prepare new kernel.
>
> KVM internal error. Suberror: 1
> emulation failure
> RAX=00007ffff7ff9000 RBX=00007ffff7e93608 RCX=00007ffff5d4d81a
> RDX=0000000000000001
> RSI=0000000000001000 RDI=0000000000000000 RBP=0000000069a07700
> RSP=00007ffff7e934b0
> R8 =0000000000000008 R9 =0000000000000000 R10=0000000000000002
> R11=0000000000000246
> R12=0000000069a07700 R13=00007ffff7e937d8 R14=0000003000704c04
> R15=0000003000704c04
> RIP=0000000000b1dd44 RFL=00010202 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0
> ES =0000 0000000000000000 ffffffff 00000000
> CS =0033 0000000000000000 ffffffff 00a0fb00 DPL=3 CS64 [-RA]
> SS =002b 0000000000000000 ffffffff 00c0f300 DPL=3 DS [-WA]
> DS =0000 0000000000000000 ffffffff 00000000
> FS =0000 00007ffff7e94700 ffffffff 00000000
> GS =0000 0000000000000000 ffffffff 00000000
> LDT=0000 0000000000000000 ffffffff 00000000
> TR =0040 ffff88003aa0df80 00002087 00008b00 DPL=0 TSS64-busy
> GDT= ffff88003aa04000 0000007f
> IDT= ffffffff816ad000 00000fff
> CR0=80050033 CR2=00007ffff5a68180 CR3=00000000289ad000 CR4=000006f0
> DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
> DR3=0000000000000000
> DR6=00000000ffff0ff0 DR7=0000000000000400
> EFER=0000000000000d01
> Code=00 85 c0 75 5d 48 8b 05 5c f5 e1 00 48 83 b8 f0 00 00 00 00 <df> a8
> f0 00 00 00 0f 88 a0 00 00 00 8b 05 4a f5 e1 00 48 89 44 24 80 df 6c 24
> 80 de c9 d8
>
> The disassembled code is
>
> 0x1dd10: push %rbx
> 0x1dd11: mov $0x6e,%eax
> 0x1dd16: mov %rdi,%rbx
> 0x1dd19: sub $0x20,%rsp
> 0x1dd1d: test %rdi,%rdi
> 0x1dd20: je 0xb1dd92
> 0x1dd22: mov 0x4bf1e0(%rip),%eax
> 0x1dd28: cmp $0xffffffff,%eax
> 0x1dd2b: je 0xb1ddd0
> 0x1dd31: test %eax,%eax
> 0x1dd33: jne 0xb1dd92
> 0x1dd35: mov 0xe1f55c(%rip),%rax
> 0x1dd3c: cmpq $0x0,0xf0(%rax)
> 0x1dd44: fildll 0xf0(%rax)
> 0x1dd4a: js 0xb1ddf0
> 0x1dd50: mov 0xe1f54a(%rip),%eax
> 0x1dd56: mov %rax,-0x80(%rsp)
> 0x1dd5b: fildll -0x80(%rsp)
> 0x1dd5f: fmulp %st,%st(1)
>
> Not sure if it helps but rax after 0xb1dd35 contains the pointer to
> mmap'd memory of /dev/hpet
I think this wouldn't work even with the latest kernel. Emulation of
x87 instructions is not supported yet.
Paolo
next prev parent reply other threads:[~2013-08-19 9:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-19 1:14 Emulation failure Duy Nguyen TN
2013-08-19 9:27 ` Paolo Bonzini [this message]
2013-08-20 1:26 ` Duy Nguyen TN
2013-08-20 8:16 ` Paolo Bonzini
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