From 4c81ba4900ab4eb24c7d2ba1aca594c644b6ce4c Mon Sep 17 00:00:00 2001
From: Len Brown <len.brown@intel.com>
Date: Sun, 14 Mar 2010 16:28:46 -0400
Subject: [PATCH] ACPI: plan to delete "acpi=ht" boot option
Signed-off-by: Len Brown <len.brown@intel.com>
---
Documentation/feature-removal-schedule.txt | 7 +++++++
arch/x86/kernel/acpi/boot.c | 4 +++-
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index a5cc0db63d7a8..ed511af0f79a5 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 df586bbc9447a..7914ab0ad76e4 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 */
--
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