Re: BUG: unable to handle kernel paging request - balloon_init - xen-4.1.0 - 2.6.32.39

[Scott Garron <xen-devel@sce.pridelands.org>]

On 05/04/2011 11:58 AM, Konrad Rzeszutek Wilk wrote:
> It tells us that the pages have been indeed filled up with the right values.
> But perhaps the values for the entries past the 4G are filled with zero, which
> might be the case as in (pte_pfn_to_mfn):

      Just FYI, the machine has exactly 4G of RAM - 2 on one CPU, 2 on
the other (two socket motherboard, single core each).

> Anyhow, try this patch below. Should give us some ideas. Not compile tested.

> +			printk(KERN_INFO "%s: 0x%lx is INVALID for %llx\n",
> +				___func__, pfn, (unsigned long)val);

      The compile complained about __func__ not being declared and
exited with an error.

> +	printk(KERN_INFO "%s: %lx, %lx\n", __func__, u.ptr, u.val);

      The compile also warned about %lx expecting 'long unsigned int',
but argument 3 and 4 are 'uint64_t'.

arch/x86/xen/mmu.c: In function ‘pte_pfn_to_mfn’:
arch/x86/xen/mmu.c:810:5: error: ‘___func__’ undeclared (first use in 
this function)
arch/x86/xen/mmu.c:810:5: note: each undeclared identifier is reported 
only once for each function it appears in
arch/x86/xen/mmu.c: In function ‘xen_set_pud_hyper’:
arch/x86/xen/mmu.c:940:2: warning: format ‘%lx’ expects type ‘long 
unsigned int’, but argument 3 has type ‘uint64_t’
arch/x86/xen/mmu.c:940:2: warning: format ‘%lx’ expects type ‘long 
unsigned int’, but argument 4 has type ‘uint64_t’
make[2]: *** [arch/x86/xen/mmu.o] Error 1
make[1]: *** [arch/x86/xen] Error 2
make: *** [arch/x86] Error 2
make: *** Waiting for unfinished jobs....


-- 
Scott Garron