Hi.
If a domain issues a hypercall with psr.i = 0 (balloon driver does)
with event pending, a domain results in infinit loop.
The attached patch is a work around by xen side.
Another way is modifying domain. i.e. patching xen_set_virtual_psr_i().
Which is better?
--
yamahata
# HG changeset patch
# User [EMAIL PROTECTED]
# Node ID 53e6d6445e6bbbe59ed1f1c503a633e84470d497
# Parent d75a6cc5e68abe8541c326afa2a614bf1973c609
work around: hypercall_preempt_check()
PATCHNAME: work_around_hypercall_preempt_check_on_ia64
Signed-off-by: Isaku Yamahata <[EMAIL PROTECTED]>
diff -r d75a6cc5e68a -r 53e6d6445e6b xen/include/xen/sched.h
--- a/xen/include/xen/sched.h Tue Mar 28 08:54:58 2006 -0700
+++ b/xen/include/xen/sched.h Wed Mar 29 22:58:09 2006 +0900
@@ -317,10 +317,18 @@ unsigned long hypercall_create_continuat
unsigned long hypercall_create_continuation(
unsigned int op, const char *format, ...);
+#ifndef __ia64__
#define hypercall_preempt_check() (unlikely( \
softirq_pending(smp_processor_id()) | \
event_pending(current) \
))
+#else
+#define hypercall_preempt_check() (unlikely( \
+ softirq_pending(smp_processor_id()) | \
+ (event_pending(current) && \
+ PSCB(current, interrupt_delivery_enabled)) \
+ ))
+#endif
/* This domain_hash and domain_list are protected by the domlist_lock. */
#define DOMAIN_HASH_SIZE 256
_______________________________________________
Xen-ia64-devel mailing list
Xen-ia64-devel@lists.xensource.com
http://lists.xensource.com/xen-ia64-devel
