RE: [Xen-users] Re: Xen 3.0 and Hyperthreading an issue?

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> I rebuilt the domain 0 kernel with the proper console 
> support, and I now have a full dump.  Will add this to the 
> bug as well soon:

What do you get if you boot with HT/SMP enabled, but then do
"xm vcpus-set 0 1" in domain 0 (or edit your xend-config.sxp such that
dom0-num-cpus = 1. Is it stable? Most people generally run with 1 cpu in
dom0 as it generally leads to better performance.

Thanks,
Ian

 
> kernel BUG at drivers/xen/netback/netback.c:297 (net_rx_action)!
> [<c02ebb1a>] net_rx_action+0x3fa/0x500
> [<c03d9ae5>] dev_queue_xmit+0x225/0x310
> [<c041a440>] fn_hash_lookup+0xb0/0xc0
> [<c03eb1bb>] ip_route_input_slow+0x7cb/0x7e0
> [<c011950a>] __wake_up+0x3a/0x70
> [<c0247e3b>] add_timer_randomness+0x16b/0x170
> [<c03df2e5>] neigh_update+0x235/0x350
> [<c03d3994>] kfree_skbmem+0x24/0x30
> [<c0410391>] arp_process+0x61/0x510
> [<c0423b00>] br_pass_frame_up_finish+0x0/0x20
> [<c0423c4c>] br_handle_frame_finish+0xac/0x130
> [<c0410937>] arp_rcv+0xf7/0x170
> [<c0420721>] packet_rcv_spkt+0x151/0x260
> [<c03da121>] netif_receive_skb+0x1e1/0x250
> [<c012184e>] tasklet_action+0x4e/0xd0
> [<c0121555>] __do_softirq+0x95/0xb0
> [<c01215bd>] do_softirq+0x4d/0x50
> [<c010d082>] do_IRQ+0x22/0x30
> [<c01048b0>] evtchn_do_upcall+0x70/0xa0
> [<c0108c68>] hypervisor_callback+0x2c/0x34
> [<c01068a2>] xen_idle+0x42/0x90
> [<c0106933>] cpu_idle+0x43/0x50
> [<c057685d>] start_kernel+0x18d/0x1d0
> [<c0576390>] unknown_bootoption+0x0/0x210
> Kernel panic - not syncing: BUG!
> 
> -----Original Message-----
> From: Cole, Ray 
> Sent: Tuesday, December 06, 2005 9:39 AM
> To: 'Charles Duffy'; xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: RE: [Xen-users] Re: Xen 3.0 and Hyperthreading an issue?
> 
> 
> I don't have an appropriate cable for a serial console, but 
> wouldn't mind setting my console to 50 lines or something.  
> But...how do I do that?  I saw some references to adding 
> 'vga=ext' on the kernel command line to set it, but this 
> doesn't seem to actually do anything different when I boot.
> 
> 
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> http://lists.xensource.com/xen-users
> 

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