[Xen-changelog] [xen-unstable] [IA64] Remove RBS from vcpu_guest_context_regs

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Alex Williamson <alex.williamson@xxxxxx>
# Date 1180626346 21600
# Node ID 919d72f6dc45ca6f7b5b4103fd06abac6bf2b4b7
# Parent  2b14a1f22eecc73807578ceb78fa994449911d8b
[IA64] Remove RBS from vcpu_guest_context_regs

We need to address places where this is allocated on the stack before
growing the structure this large.

Signed-off-by: Alex Williamson <alex.williamson@xxxxxx>
---
 xen/include/public/arch-ia64.h            |   10 ++++++++++
 xen/include/public/foreign/reference.size |    4 ++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff -r 2b14a1f22eec -r 919d72f6dc45 xen/include/public/arch-ia64.h
--- a/xen/include/public/arch-ia64.h    Fri May 25 09:43:21 2007 -0600
+++ b/xen/include/public/arch-ia64.h    Thu May 31 09:45:46 2007 -0600
@@ -464,8 +464,18 @@ struct vcpu_guest_context_regs {
 
         struct vcpu_tr_regs tr;
 
+#if 0
+       /*
+        * The vcpu_guest_context structure is allocated on the stack in
+        * a few places.  With this array for RBS storage, that structure
+        * is a bit over 21k.  It looks like maybe we're blowing the stack
+        * and causing rather random looking failures on a couple systems.
+        * Remove since we're not actually using it for now.
+        */
+
         /* Note: loadrs is 2**14 bytes == 2**11 slots.  */
         unsigned long rbs[2048];
+#endif
 };
 
 struct vcpu_guest_context {
diff -r 2b14a1f22eec -r 919d72f6dc45 xen/include/public/foreign/reference.size
--- a/xen/include/public/foreign/reference.size Fri May 25 09:43:21 2007 -0600
+++ b/xen/include/public/foreign/reference.size Thu May 31 09:45:46 2007 -0600
@@ -8,8 +8,8 @@ xen_ia64_boot_param       |       -     
 xen_ia64_boot_param       |       -       -      96
 ia64_tr_entry             |       -       -      32
 vcpu_tr_regs              |       -       -     512
-vcpu_guest_context_regs   |       -       -   21872
-vcpu_guest_context        |    2800    5168   21904
+vcpu_guest_context_regs   |       -       -    5488
+vcpu_guest_context        |    2800    5168    5520
 arch_vcpu_info            |      24      16       0
 vcpu_time_info            |      32      32      32
 vcpu_info                 |      64      64      48

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