[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-devel] Re: SMP dom0 with 8 cpus of i386
Keir, With your patch on top of 6461:936be0ae823fd3a94ea06d92fdacad65b85d6014 I am still seeing same SMP dom0 boot issue in 8 way SMP box. I am able to reproduce it consistently, I am using the attached config for dom0 kernel. What config are you using? Thanks & Regards, Nitin ------------------------------------------------------------------------ ----------- Sr Software Engineer Open Source Technology Center, Intel Corp -----Original Message----- From: Keir Fraser [mailto:Keir.Fraser@xxxxxxxxxxxx] Sent: Saturday, August 27, 2005 2:17 AM To: Keir Fraser Cc: Kamble, Nitin A; xen-devel Subject: Re: [Xen-devel] Re: SMP dom0 with 8 cpus of i386 > One possibility is that it's due to my fiddling with the domain 0 > memory map (I now free pseudophys range 0-1MB to the linux memoy > allocator, which we didn''t previously do). This might mean that we're > now allocating memory that gets scribbled on.... > > It might be worth explicitly unmapping the low pseudophys 1MB, not free > it to the memory allocator, and then see if you can boot dom0. Then we > can see if we have any code paths that go straight at low memory, which > is a bug on xenlinux. I wasn't able to repro these SMP dom0 problems myself. I tried unmapping the low 1MB of pseudophys memory, and got a benign crash in pci_find_bios() (now fixed). It may be that you have some driver that is trying to tamper with 'ISA space'. It's worth trying to apply the attached patch and see if you can still boot SMP dom0 without crashing. If anyone else is having similar problems then it would be great if they can try this patch too (it's only good for 32-bit though -- no effect on x86_64). -- Keir Attachment:
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