ACPI: plan to delete "acpi=ht" boot option

Signed-off-by: Len Brown <len.brown@intel.com>

2 files changed, 10 insertions, 1 deletions

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 */