path: root/arch/ia64/Makefile
diff options
authorFenghua Yu <[fenghua.yu@intel.com]>2009-08-11 14:52:11 -0700
committerFenghua Yu <fenghua.yu@intel.com>2009-08-11 14:52:11 -0700
commitbf2a4c7270b9a22243a91ab5efcc47aaf997c66b (patch)
treebe5393189eccb6a3cc12268ec2bf26b047745c7c /arch/ia64/Makefile
parentb5a8879347bbe68bd24c8870503bf6a0362da26b (diff)
arch/ia64/Makefile: Remove -mtune=merced in IA64 kernel build
Between GCC version 3.4.0 and 4.3.3 (including 3.4.0 and 4.3.3), -mtune=merced is implemented in GCC. Starting from 4.4.0, -mtune=merced is deprecated. Even implemented in versions between 3.4.0 and 4.3.3, the -mtune=merced feature has been broken in some of the versions. For example, GCC 4.1.2 reports interanl tuning function errors during kernel building with -mtune=merced. Or GCC Bugzilla 16130 reports another -mtune=merced issue on GCC 3.4.1. So I would remove the -mtune=merced from IA64 kernel build. Without this option, kernel on Merced will remain the same except losing an unstable and out-of-date performance tunning feature. Since GCC version 3.4.0, -mtune=mckinley has been implemented. The -mtune=mckinley option functions the same as mtune=itanium2. And mtune=itanium2 is the default option. So we don't need to add mtune=mckinley either since its been the default option in any GCC version which implements this option. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Diffstat (limited to 'arch/ia64/Makefile')
1 files changed, 0 insertions, 5 deletions
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index 58a7e46affda..e7cbaa02cd0b 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -41,11 +41,6 @@ $(error Sorry, you need a newer version of the assember, one that is built from
-ifeq ($(call cc-version),0304)
- cflags-$(CONFIG_ITANIUM) += -mtune=merced
- cflags-$(CONFIG_MCKINLEY) += -mtune=mckinley
KBUILD_CFLAGS += $(cflags-y)
head-y := arch/ia64/kernel/head.o arch/ia64/kernel/init_task.o