From: Isaku Yamahata <yamahata@valinux.co.jp>
Date: Wed, 13 Aug 2008 04:18:06 +0000 (+0900)
Subject: [IA64] fix vtlb flush
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14158
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=f60127899040f1103a286e56a27d67432c2c9652;p=xen.git

[IA64] fix vtlb flush

Live migration with uninitialized vcpu will crash xen by null pointer.

Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
---

diff --git a/xen/arch/ia64/xen/vhpt.c b/xen/arch/ia64/xen/vhpt.c
index 6e89f0d44f..525b76fc37 100644
--- a/xen/arch/ia64/xen/vhpt.c
+++ b/xen/arch/ia64/xen/vhpt.c
@@ -526,6 +526,8 @@ void flush_tlb_for_log_dirty(struct domain *d)
 	/* NB. There is no race because all vcpus are paused. */
 	if (is_hvm_domain(d)) {
 		for_each_vcpu (d, v) {
+			if (!v->is_initialised)
+				continue;
 			/* XXX: local_flush_tlb_all is called redundantly */
 			thash_purge_all(v);
 		}
@@ -533,6 +535,8 @@ void flush_tlb_for_log_dirty(struct domain *d)
 					NULL, 1, 1);
 	} else if (HAS_PERVCPU_VHPT(d)) {
 		for_each_vcpu (d, v) {
+			if (!v->is_initialised)
+				continue;
 			vcpu_purge_tr_entry(&PSCBX(v,dtlb));
 			vcpu_purge_tr_entry(&PSCBX(v,itlb));
 			vcpu_vhpt_flush(v);