From: Andrew Cooper <andrew.cooper3@citrix.com>
To: linux@eikelenboom.it, xen-devel@lists.xen.org
Cc: Paul Durrant <Paul.Durrant@citrix.com>
Subject: Re: xen-unstabel + linux 4.2: MMIO emulation failed: d23v0 64bit @ 0010:ffffffff814e2b1c -> 66 89 02 48 8d 55 c0 48 89 5d c0 44 89 65 c8 e8
Date: Mon, 27 Jul 2015 15:07:39 +0100 [thread overview]
Message-ID: <55B63B2B.8070508@citrix.com> (raw)
In-Reply-To: <34b88d3d0f41027630a7fdc85675601e@eikelenboom.it>
On 24/07/15 19:56, linux@eikelenboom.it wrote:
> Hi All,
>
> On my AMD system running xen-unstable (last commit: ),
> after a few restarts of a HVM guest with pci-passthrough i got these
> on shutdown of the guest:
> (never seen this before, so it should be something triggered by a
> recent commit)
>
> --
> Sander
>
>
> .... (probably lost before but that's lost)
>
> (XEN) [2015-07-24 18:46:53.732] domain_crash called from io.c:166
> (XEN) [2015-07-24 18:46:53.732] io.c:165:d23v0 Weird HVM ioemulation
> status 1.
> (XEN) [2015-07-24 18:46:53.732] domain_crash called from io.c:166
> (XEN) [2015-07-24 18:46:53.732] io.c:165:d23v0 Weird HVM ioemulation
> status 1.
> (XEN) [2015-07-24 18:46:53.732] domain_crash called from io.c:166
> (XEN) [2015-07-24 18:46:53.732] io.c:165:d23v0 Weird HVM ioemulation
> status 1.
Paul: this is very likely an issue your emulation series.
66 89 02 is mov %ax,(%rdx), but has ended up in handle_pio() which seems
wrong.
Sander: Please can you rerun with the following debug
diff --git a/xen/arch/x86/hvm/io.c b/xen/arch/x86/hvm/io.c
index d3b9cae..7560d08 100644
--- a/xen/arch/x86/hvm/io.c
+++ b/xen/arch/x86/hvm/io.c
@@ -163,7 +163,9 @@ int handle_pio(uint16_t port, unsigned int size, int
dir)
break;
default:
gdprintk(XENLOG_ERR, "Weird HVM ioemulation status %d.\n", rc);
- domain_crash(curr->domain);
+ show_execution_state(curr);
+ dump_execution_state();
+ domain_crash_synchronous(curr->domain);
break;
}
~Andrew
next prev parent reply other threads:[~2015-07-27 14:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-24 18:56 xen-unstabel + linux 4.2: MMIO emulation failed: d23v0 64bit @ 0010:ffffffff814e2b1c -> 66 89 02 48 8d 55 c0 48 89 5d c0 44 89 65 c8 e8 linux
2015-07-24 19:27 ` Sander Eikelenboom
2015-07-27 14:07 ` Andrew Cooper [this message]
2015-07-27 14:22 ` Paul Durrant
2015-07-27 14:44 ` Sander Eikelenboom
2015-07-28 21:16 ` linux
2015-07-29 9:06 ` Paul Durrant
2015-07-29 11:11 ` Sander Eikelenboom
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