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Merge branch 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 

* 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen: p2m: correctly initialize partial p2m leaf
  xen: fix non-ANSI function warning in irq.c
This commit is contained in:
Linus Torvalds 2011-01-21 13:35:10 -08:00
parent a1d3f5b70d 8e1b4cf210
commit cfd74486ea
2 changed files with 20 additions and 2 deletions
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2
arch/x86/xen/irq.c
View File

@ -126,7 +126,7 @@ static const struct pv_irq_ops xen_irq_ops __initdata = {
#endif
};
void __init xen_init_irq_ops()
void __init xen_init_irq_ops(void)
{
pv_irq_ops = xen_irq_ops;
x86_init.irqs.intr_init = xen_init_IRQ;

20
arch/x86/xen/p2m.c
View File

@ -237,7 +237,25 @@ void __init xen_build_dynamic_phys_to_machine(void)
p2m_top[topidx] = mid;
}
p2m_top[topidx][mididx] = &mfn_list[pfn];
/*
* As long as the mfn_list has enough entries to completely
* fill a p2m page, pointing into the array is ok. But if
* not the entries beyond the last pfn will be undefined.
* And guessing that the 'what-ever-there-is' does not take it
* too kindly when changing it to invalid markers, a new page
* is allocated, initialized and filled with the valid part.
*/
if (unlikely(pfn + P2M_PER_PAGE > max_pfn)) {
unsigned long p2midx;
unsigned long *p2m = extend_brk(PAGE_SIZE, PAGE_SIZE);
p2m_init(p2m);
for (p2midx = 0; pfn + p2midx < max_pfn; p2midx++) {
p2m[p2midx] = mfn_list[pfn + p2midx];
}
p2m_top[topidx][mididx] = p2m;
} else
p2m_top[topidx][mididx] = &mfn_list[pfn];
}
m2p_override_init();