[Xen-devel] [PATCH] x86: Avoid tripping watchdog when constructing dom0

[Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>]

Constructing dom0 may take a few seconds, particularly if the slow VESA
graphics terminal is used. Process pending softirqs a few times to avoid
tripping a watchdog with a short timeout.

Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
---
 xen/arch/x86/domain_build.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/arch/x86/domain_build.c b/xen/arch/x86/domain_build.c
index 03e4bfe..98d27f2 100644
--- a/xen/arch/x86/domain_build.c
+++ b/xen/arch/x86/domain_build.c
@@ -930,6 +930,8 @@ int __init construct_dom0(
     BUG_ON(d->vcpu[0] == NULL);
     BUG_ON(v->is_initialised);
 
+    process_pending_softirqs();
+
     printk("*** LOADING DOMAIN 0 ***\n");
 
     d->max_pages = ~0U;
@@ -946,6 +948,8 @@ int __init construct_dom0(
     if ( (rc = elf_xen_parse(&elf, &parms)) != 0 )
         goto out;
 
+    process_pending_softirqs();
+
     /* compatibility check */
     compatible = 0;
     compat32   = 0;
@@ -1167,6 +1171,8 @@ int __init construct_dom0(
            _p(v_start), _p(v_end));
     printk(" ENTRY ADDRESS: %p\n", _p(parms.virt_entry));
 
+    process_pending_softirqs();
+
     mpt_alloc = (vpt_start - v_start) + pfn_to_paddr(alloc_spfn);
     if ( vinitrd_start )
         mpt_alloc -= PAGE_ALIGN(initrd_len);
-- 
2.1.0


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