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

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

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index a5cc0db63d7a8b104403099494f86db52edbdc79..ed511af0f79a5697d560a00d37ee26f601198673 100644 (file)
--- 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 df586bbc9447abc5d94d2fa6f1f1cd6b9a7e89ca..7914ab0ad76e452ab2c570dac2a37bfd6cdc4ac0 100644 (file)
--- 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 */