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[PATCH] paravirt: Allow disable power management under hypervisor 

Two legacy power management modes are much easier to just explicitly disable
when running in paravirtualized mode - neither APM nor PnP is still relevant.
The status of ACPI is still debatable, and noacpi is still a common enough
boot parameter that it is not necessary to explicitly disable ACPI.

Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
hifive-unleashed-5.1
Rusty Russell 2006-12-07 02:14:08 +01:00 committed by Andi Kleen
parent 3bbf547254
commit 6020c8f315
2 changed files with 4 additions and 2 deletions
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3
arch/i386/kernel/apm.c
View File

@ -231,6 +231,7 @@
#include <asm/uaccess.h>
#include <asm/desc.h>
#include <asm/i8253.h>
#include <asm/paravirt.h>
#include "io_ports.h"
@ -2235,7 +2236,7 @@ static int __init apm_init(void)
dmi_check_system(apm_dmi_table);
if (apm_info.bios.version == 0) {
if (apm_info.bios.version == 0 || paravirt_enabled()) {
printk(KERN_INFO "apm: BIOS not found.\n");
return -ENODEV;
}

3
drivers/pnp/pnpbios/core.c
View File

@ -530,7 +530,8 @@ static int __init pnpbios_init(void)
if (check_legacy_ioport(PNPBIOS_BASE))
return -ENODEV;
#endif
if (pnpbios_disabled || dmi_check_system(pnpbios_dmi_table)) {
if (pnpbios_disabled || dmi_check_system(pnpbios_dmi_table) ||
paravirt_enabled()) {
printk(KERN_INFO "PnPBIOS: Disabled\n");
return -ENODEV;
}