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-rw-r--r--buildconfigs/Rules.mk2
1 files changed, 1 insertions, 1 deletions
diff --git a/buildconfigs/Rules.mk b/buildconfigs/Rules.mk
index 1455be04e9..97831bdfb0 100644
--- a/buildconfigs/Rules.mk
+++ b/buildconfigs/Rules.mk
@@ -115,7 +115,7 @@ config-update-pae:
ifeq ($(XEN_TARGET_X86_PAE),y)
sed -e 's!^CONFIG_HIGHMEM4G=y$$!\# CONFIG_HIGHMEM4G is not set!;s!^\# CONFIG_HIGHMEM64G is not set$$!CONFIG_HIGHMEM64G=y!' $(CONFIG_FILE) > $(CONFIG_FILE)- && mv $(CONFIG_FILE)- $(CONFIG_FILE)
else
- @: # do nothing yet
+ grep '^CONFIG_HIGHMEM64G=y' $(CONFIG_FILE) >/dev/null && sed -e 's!^CONFIG_HIGHMEM64G=y$$!\# CONFIG_HIGHMEM64G is not set!;s!^\# CONFIG_HIGHMEM4G is not set$$!CONFIG_HIGHMEM4G=y!' $(CONFIG_FILE) > $(CONFIG_FILE)- && mv $(CONFIG_FILE)- $(CONFIG_FILE)
endif
# never delete any intermediate files.