archacpi: make *acpi=1 the default

[plan9front.git] / sys / man / 8 / plan9.ini

diff --git a/sys/man/8/plan9.ini b/sys/man/8/plan9.ini
index 94a575798cbc32781ae4800a5f54636e730215b1..a3bcc09acf2d301a0aa939b42c89738fbf630938 100644 (file)
--- a/sys/man/8/plan9.ini
+++ b/sys/man/8/plan9.ini
@@ -887,16 +887,27 @@ For example:
     umbexclude=0xD1800-0xD3FFF
 .EE
 .SS \fL*acpi=\fIvalue\fP
-The presence of this option enables ACPI and the export of the
+This option controls the search for ACPI tables by the kernel.
+The
+.I value
+is the hexadecimal physical address of the RSD structure
+and is passed by the EFI bootloer
+.IR 9boot (8)
+automatically.
+The special
+.I value
+of 1 or empty make the kernel search for the structure
+in BIOS memory area (This is the default).
+The
+special
+.I value
+of 0 will disable ACPI support (for interrupt routing)
+in the kernel,
+but still make table data available in
 .B #P/acpitbls
-file in
+file of the
 .IR arch (3)
-device. In multiprocessor mode, the kernel will use the ACPI
-tables to configure APIC interrupts unless a
-.I value
-of
-.B 0
-is specified.
+device.
 .SS \fLapm0=\fP
 This enables the ``advanced power management'' interface
 as described in