diff --git a/debian/changelog b/debian/changelog
index 90b50caf6..0d198465e 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -8,6 +8,10 @@ linux-2.6 (2.6.38-2) UNRELEASED; urgency=low
   * Add configuration for Debian architecture ppc64, matching the
     powerpc/powerpc64 flavour (Closes: #618976)
 
+  [ Jurij Smakov ]
+  * Bump CONFIG_NR_CPUS on sparc to 256 to accomodate T2+ machines
+    (Closes: #619435). This is ABI-changing, so bump ABI to 2.
+
  -- Ben Hutchings <ben@decadent.org.uk>  Sat, 19 Mar 2011 05:17:42 +0000
 
 linux-2.6 (2.6.38-1) unstable; urgency=low
diff --git a/debian/config/defines b/debian/config/defines
index e532b09b0..c8b4bb597 100644
--- a/debian/config/defines
+++ b/debian/config/defines
@@ -1,5 +1,5 @@
 [abi]
-abiname: 1
+abiname: 2
 
 [base]
 arches:
diff --git a/debian/config/sparc/config.sparc64-smp b/debian/config/sparc/config.sparc64-smp
index d21fda59d..f6412c26e 100644
--- a/debian/config/sparc/config.sparc64-smp
+++ b/debian/config/sparc/config.sparc64-smp
@@ -2,6 +2,6 @@
 ## file: arch/sparc/Kconfig
 ##
 CONFIG_SMP=y
-CONFIG_NR_CPUS=32
+CONFIG_NR_CPUS=256
 CONFIG_SCHED_SMT=y