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ACPI: delete the "acpi=ht" boot option

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acpi=ht was important in 2003 -- before ACPI was
universally deployed and enabled by default in
the major Linux distributions.

At that time, there were a fair number of people who
or chose to, or needed to, run with acpi=off,
yet also wanted access to Hyper-threading.

Today we find that many invocations of "acpi=ht"
are accidental, and thus is it possible that it
is doing more harm than good.

In 2.6.34, we warn on invocation of acpi=ht.
In 2.6.35, we delete the boot option.

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown
2010-02-19 00:09:22 -05:00
parent 4c81ba4900
commit 68ca406930
6 changed files with 6 additions and 24 deletions
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2
arch/x86/include/asm/acpi.h
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@@ -85,7 +85,6 @@ extern int acpi_ioapic;
extern int acpi_noirq;
extern int acpi_strict;
extern int acpi_disabled;
extern int acpi_ht;
extern int acpi_pci_disabled;
extern int acpi_skip_timer_override;
extern int acpi_use_timer_override;
@@ -97,7 +96,6 @@ void acpi_pic_sci_set_trigger(unsigned int, u16);
static inline void disable_acpi(void)
{
acpi_disabled = 1;
acpi_ht = 0;
acpi_pci_disabled = 1;
acpi_noirq = 1;
}