[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] [HVM] Don't set the shadow allocation to zero if the dom is still shadowed.
# HG changeset patch # User Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx> # Date 1167735470 0 # Node ID 711c31232d71608fe4ea9f4f22ca2620d3faf8ff # Parent 4fc6ffff2ac583dc0c386eb3452484b31b37fd0e [HVM] Don't set the shadow allocation to zero if the dom is still shadowed. Signed-off-by: Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx> --- xen/arch/x86/mm/shadow/common.c | 9 +++++++++ 1 files changed, 9 insertions(+) diff -r 4fc6ffff2ac5 -r 711c31232d71 xen/arch/x86/mm/shadow/common.c --- a/xen/arch/x86/mm/shadow/common.c Sun Dec 31 12:26:42 2006 +0000 +++ b/xen/arch/x86/mm/shadow/common.c Tue Jan 02 10:57:50 2007 +0000 @@ -3306,6 +3306,15 @@ int shadow_domctl(struct domain *d, case XEN_DOMCTL_SHADOW_OP_SET_ALLOCATION: shadow_lock(d); + if ( sc->mb == 0 && shadow_mode_enabled(d) ) + { + /* Can't set the allocation to zero unless the domain stops using + * shadow pagetables first */ + SHADOW_ERROR("Can't set shadow allocation to zero, domain %u" + " is still using shadows.\n", d->domain_id); + shadow_unlock(d); + return -EINVAL; + } rc = sh_set_allocation(d, sc->mb << (20 - PAGE_SHIFT), &preempted); shadow_unlock(d); if ( preempted ) _______________________________________________ Xen-changelog mailing list Xen-changelog@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-changelog |
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