Messages in this thread Patch in this message | | | Date | Tue, 27 Oct 2009 19:10:30 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: 2.6.32-rc not booting with Xen-3.2 (bisected) |
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On 10/27/09 12:01, Christian Kujau wrote: > On Tue, 27 Oct 2009 at 11:18, Jeremy Fitzhardinge wrote: > >> $ gdb vmlinux >> (gdb) x/i 0xffffffff812c50ad >> > The value is always ffffffff812c50ad, gdb says: > > (gdb) x/i 0xffffffff812c50ad > 0xffffffff812c50ad <xen_load_gdt_boot+252>: ud2a >
Please try the patch below.
>> Hm, sounds like a xenstored bug, or something is just pounding on it. >> Are there any other domains running, or other busy processes? >> > Yes, there's another domU running. But the high load and xenstored > spinning is only happening when I try to start the domain with this > 2.6.32-rc kernel. >
That seems unlikely to be related (or a secondary effect of having a domain crash).
J
Subject: [PATCH] xen: set up mmu_ops before trying to set any ptes
xen_setup_stackprotector() ends up trying to set page protections, so we need to have vm_mmu_ops set up before trying to do so. Failing to do so causes an early boot crash.
[ Impact: Fix early crash under Xen. ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c index 3439616..23a4d80 100644 --- a/arch/x86/xen/enlighten.c +++ b/arch/x86/xen/enlighten.c @@ -1075,6 +1075,8 @@ asmlinkage void __init xen_start_kernel(void) * Set up some pagetable state before starting to set any ptes. */ + xen_init_mmu_ops(); + /* Prevent unwanted bits from being set in PTEs. */ __supported_pte_mask &= ~_PAGE_GLOBAL; if (!xen_initial_domain()) @@ -1099,7 +1101,6 @@ asmlinkage void __init xen_start_kernel(void) */ xen_setup_stackprotector(); - xen_init_mmu_ops(); xen_init_irq_ops(); xen_init_cpuid_mask();
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