TheGrebs.com:IRC Logs:#xen:2006:02:18

---	Log	opened Sat Feb 18 00:00:01 2006
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01:12	<Shaun>	anybody every tryed patching the domU kernel with grsecurity?
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07:27	<Ava>	hi
07:29	<Ava>	i have a problem with dropped TX packets on the vif* interfaces, running xen 3.0.1 with bridged networking and MACs choosen manually.
07:29	<Ava>	had this problem with xen 2.0.7 too, disabling checksumming on the eth0 interfaces (Dom0,DomU) didn't help, maybe some ideas?
07:30	<Ava>	NIC is Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 11)
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10:45	<Suit>	Hi there. I have been looking into the routing method for setting up communication between domU<->dom0<->Outside world
10:46	<Suit>	I am hitting snags or I don't know what for everything I try
10:47	<Suit>	I can see the scripts configuring kernel on the vif for proxy_arp, but the device is not available under proc
10:48	<Suit>	yet this statement never seems to fail.
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12:03	<tonfa>	ivan: there is a fastcall for int80 on x86
12:04	<tonfa>	it isn't processed by xen if i understand correctly
12:07	<ivan>	what was my question? i've logged out and back in since, so i dont have it in scrollbakc
12:10	<Truck>	(ivan) will all interrupts in xen will come though events channel, including software interrupts?
12:11	<ivan>	ah, thanks
12:12	<ivan>	so all except software 80 are handled by callback, and only exceptions are handled by the trap table?
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12:17	<tonfa>	ivan: i am not sure, i am trying to figure this out too :)
12:17	<tonfa>	grep int80 in xen source
12:18	<tonfa>	bbl
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12:53	<grifferz>	evening
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13:44	<ivan>	can only ring1 make hypercalls?
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13:54	<tonfa>	ivan: arch/x86/x86_32/traps.c: /* The hypercall entry vector is only accessible from ring 1. */
13:54	<tonfa>	not sure for x86_64
13:57	<movement>	they can go through dom0_ops for a limited set though
13:58	<ivan>	ah
14:00	<movement>	or rather through privcmd
14:02	<tonfa>	what are dom0_ops ?
14:02	<tonfa>	hypercall commands from dom0 userspace ?
14:03	<ivan>	hmmm, hypervisor_shared_info->vcpu_data[0].evtchn_upcall_mask = 0 causes my my domain to start from it's entry point(which is 0) again
14:05	<tonfa>	ivan: is that xen 2 or xen 3 ?
14:05	<ivan>	xen2
14:05	<tonfa>	ok
14:06	<ivan>	im trying to enable events, and it looks like the eip is getting reset to 0
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14:40	<ivan>	gah! that was just me being stupid, ignore the question
14:41	<tonfa>	what was it ?
14:41	[~]	tonfa is curious :)
14:42	<ivan>	i had shared_info pointing at bogus memory
14:43	<ivan>	forgot to set the pointer to it
14:44	<tonfa>	ok
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---	Log	closed Sun Feb 19 00:00:52 2006