From: Andriy Gapon <avg@FreeBSD.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Andreas Färber" <afaerber@suse.de>,
"Gleb Natapov" <gleb@redhat.com>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] in_asm substitute for accel=kvm:tcg
Date: Thu, 19 Sep 2013 20:18:37 +0300 [thread overview]
Message-ID: <523B31ED.9020504@FreeBSD.org> (raw)
In-Reply-To: <523B2C06.3060309@redhat.com>
on 19/09/2013 19:53 Paolo Bonzini said the following:
> 1) Can you try loading the kvm_intel module with
> emulate_invalid_guest_state=0?
Will do.
> 2) What are the contents of fs and gs? Why are they not zeroed?
> Perhaps that is causing invalid guest state emulation to run, and then
> something is triggering a bug in emulate_invalid_guest_state itself.
I will try to find this out.
> 3) What is at 0x9315?
This I can answer immediately. It looks like this address even gets executed
earlier:
qemu-system-x86-12024 [002] 278153.809990: kvm_emulate_insn: 0:9315:ea 1a
93 00 00 (real)
qemu-system-x86-12024 [002] 278153.809991: kvm_entry: vcpu 0
qemu-system-x86-12024 [002] 278153.809992: kvm_emulate_insn: 0:931a:31 c0
(real)
I guess it's a jump to 931a.
Puzzling that later it becomes a jump to self.
--
Andriy Gapon
next prev parent reply other threads:[~2013-09-19 17:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-17 11:37 [Qemu-devel] in_asm substitute for accel=kvm:tcg Andriy Gapon
2013-09-17 12:32 ` Andreas Färber
2013-09-17 14:33 ` Andriy Gapon
2013-09-17 18:49 ` Gleb Natapov
2013-09-19 14:36 ` Andriy Gapon
2013-09-19 16:53 ` Paolo Bonzini
2013-09-19 17:18 ` Andriy Gapon [this message]
2013-09-19 17:26 ` Paolo Bonzini
2013-09-19 18:05 ` Andriy Gapon
2013-09-19 17:49 ` Andriy Gapon
2013-09-22 6:31 ` Gleb Natapov
2013-09-22 8:05 ` Andriy Gapon
2013-09-22 8:17 ` Gleb Natapov
2013-09-22 9:41 ` Andriy Gapon
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