Re: [Xen-devel] Re: [PATCH] Xen Guest Kexec

[Gerd Hoffmann <kraxel@xxxxxxx>]

> The assertion is spurious. I've tightened up the assertion condition in
> changeset 9157:51c59d5d7... "Tighten up the assertion conditions in the
> GUEST_MODE() macro.".

Looks like I'm triggering lots of funny bugs, see log below ...

Current plan is to get kexec work first with
features=auto_translated_physmap due to some non-trivial issues with
handling the p2m map.  That attempt killed Xen too ;)

cheers,

  Gerd

-- 
Gerd 'just married' Hoffmann <kraxel@xxxxxxx>
I'm the hacker formerly known as Gerd Knorr.
http://www.suse.de/~kraxel/just-married.jpeg

(XEN) get_mfn_from_gpfn_foreign(d->id=3, gpfn=65786) => 0 l2e=00000000
(XEN) get_mfn_from_gpfn_foreign(d->id=3, gpfn=30312) => 0 l2e=00000000
(XEN) ----[ Xen-3.0.0    Not tainted ]----
(XEN) CPU:    1
(XEN) EIP:    e008:[<ff17ad4f>] __shadow_get_l2e+0x77/0x80
(XEN) EFLAGS: 00010246   CONTEXT: hypervisor
(XEN) eax: fe7f9000   ebx: ffbf5ed0   ecx: ffbb1080   edx: fe7f9000
(XEN) esi: 033b6fd4   edi: 00000000   ebp: ffbf5df0   esp: ffbf5dd8
(XEN) cr0: 8005003b   cr3: 001b6000
(XEN) ds: e010   es: e010   fs: e010   gs: e021   ss: e010   cs: e008
(XEN) Xen stack trace from esp=ffbf5dd8:
(XEN)    00000000 ffbb0104 00000000 19a16063 00000000 00000001 ffbf5eb0 
ff17ce17 
(XEN)    ffbb1080 0000b000 ffbf5e2c 000003ff e0000029 e0000029 ffbe4080 
20000000 
(XEN)    e0000028 ffbf5fb4 ffbf5e40 00000286 fc67f270 ffbe4080 00000092 
ffbaf0f0 
(XEN)    00000400 00019047 fec56000 fec58000 fec57000 00000001 00000000 
00000000 
(XEN)    00000400 00000000 00000000 00000000 000003ff 00000000 000003ff 
ff13cafd 
(XEN)    fec56000 fec58000 fec57000 00000001 00000001 00000020 fc67f270 
ffbe4080 
(XEN)    00000001 00000055 ffbf5eb0 ff17d798 00000001 ffbf5ed0 ffbf5ef0 
ff17d6e7 
(XEN)    ffbe4080 20000000 000191de 00000002 ffbf5f08 00000020 00000000 
1aa1a061 
(XEN)    1aa1a063 00000000 00000001 fec55008 ff1bd080 ff1179ef ffbf5f20 
ff135bea 
(XEN)    ffbe4080 ffbb1108 ffbf5f20 ff128bd5 00000000 ffffffff ffbf5f60 
00000001 
(XEN)    00000000 00000001 ffbf5f30 ff13a915 ffbe4080 ffbe431c ffbf5f60 
ff105732 
(XEN)    ffbe4080 ffbe4318 00000000 00000001 ff1be05c ffbf2900 ffbe4080 
00000000 
(XEN)    00000001 00000001 ffbf5f90 ff11b5fd 00000006 ff1be480 00000001 
ff1be480 
(XEN)    ffbf5f98 ff105545 ffbe4080 00000006 00000040 00000001 ffbf5fb0 
ff12681a 
(XEN)    ffbf5fa8 ff105583 ffbe4080 00000000 00000000 00000001 ffbf5ea8 
00000000 
(XEN)    00000000 00000000 00000000 00000000 00000000 00000000 000d0000 
0000420d 
(XEN)    0000e019 00000246 033b6fd4 0000e021 0000e021 0000e021 0000e021 
0000e021 
(XEN)    00000001 ffbf6080 
(XEN) Xen call trace:
(XEN)    [<ff17ad4f>] __shadow_get_l2e+0x77/0x80
(XEN)    [<ff17ce17>] resync_all+0x3bd/0x852
(XEN)    [<ff17d6e7>] __shadow_sync_all+0x1c9/0x251
(XEN)    [<ff135bea>] shadow_sync_all+0x90/0x195
(XEN)    [<ff13a915>] cleanup_writable_pagetable+0x42/0x86
(XEN)    [<ff105732>] domain_shutdown_finalise+0x1ad/0x277
(XEN)    [<ff11b5fd>] do_softirq+0xa1/0xb8
(XEN)    [<ff12681a>] idle_loop+0x5b/0x5d
(XEN)    
(XEN) Pagetable walk from fe7f9000:
(XEN)   L2 = 00000000 55555555 
(XEN) 
(XEN) ****************************************
(XEN) Panic on CPU 1:
(XEN) CPU1 FATAL PAGE FAULT
(XEN) [error_code=0000]
(XEN) Faulting linear address: fe7f9000
(XEN) ****************************************
(XEN) 
(XEN) Reboot in five seconds...

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