diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index a5cc0db63d7a..ed511af0f79a 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -582,3 +582,10 @@ Why:	The paravirt mmu host support is slower than non-paravirt mmu, both
 Who:	Avi Kivity <avi@redhat.com>
 
 ----------------------------
+
+What: 	"acpi=ht" boot option
+When:	2.6.35
+Why:	Useful in 2003, implementation is a hack.
+	Generally invoked by accident today.
+	Seen as doing more harm than good.
+Who:	Len Brown <len.brown@intel.com>
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index df586bbc9447..7914ab0ad76e 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1559,8 +1559,10 @@ static int __init parse_acpi(char *arg)
 	}
 	/* Limit ACPI just to boot-time to enable HT */
 	else if (strcmp(arg, "ht") == 0) {
-		if (!acpi_force)
+		if (!acpi_force) {
+			printk(KERN_WARNING "acpi=ht will be removed in Linux-2.6.35\n");
 			disable_acpi();
+		}
 		acpi_ht = 1;
 	}
 	/* acpi=rsdt use RSDT instead of XSDT */