ia64/xen-unstable

changeset 11636:3470d9cd27e5

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[IA64] Modify p2m converter to avoid hypervisor crash

Crash occurs during destruction of VT-i domain with PV-on-HVM.

Signed-off-by: Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>
Signed-off-by: Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
author awilliam@xenbuild.aw
date Sun Oct 01 10:48:40 2006 -0600 (2006-10-01)
parents f34e37d0742d
children f6007621cc0c
files xen/arch/ia64/xen/mm.c
line diff
     1.1 --- a/xen/arch/ia64/xen/mm.c	Tue Sep 26 19:11:33 2006 -0600
     1.2 +++ b/xen/arch/ia64/xen/mm.c	Sun Oct 01 10:48:40 2006 -0600
     1.3 @@ -396,6 +396,12 @@ gmfn_to_mfn_foreign(struct domain *d, un
     1.4  {
     1.5  	unsigned long pte;
     1.6  
     1.7 +	// This function may be called from __gnttab_copy()
     1.8 +	// during destruction of VT-i domain with PV-on-HVM driver.
     1.9 +	if (unlikely(d->arch.mm.pgd == NULL)) {
    1.10 +		if (VMX_DOMAIN(d->vcpu[0]))
    1.11 +			return INVALID_MFN;
    1.12 +	}
    1.13  	pte = lookup_domain_mpa(d,gpfn << PAGE_SHIFT, NULL);
    1.14  	if (!pte) {
    1.15  		panic("gmfn_to_mfn_foreign: bad gpfn. spinning...\n");