[SRC] cvs commit: src/sys/i386/acpica acpi_wakeup.c
nate at root.org
Thu Mar 15 01:37:54 UTC 2007
Julian Elischer wrote:
> Nate Lawson wrote:
>>>> Index: src/sys/i386/i386/pmap.c
>>>> diff -u src/sys/i386/i386/pmap.c:1.582 src/sys/i386/i386/pmap.c:1.583
>>>> --- src/sys/i386/i386/pmap.c:1.582 Mon Mar 5 21:40:10 2007
>>>> +++ src/sys/i386/i386/pmap.c Wed Mar 14 22:30:02 2007
>>>> @@ -422,6 +422,13 @@
>>>> /* Turn on PG_G on kernel page(s) */
>>>> + /*
>>>> + * Create an identity mapping (virt == phys) for the low 1 MB
>>>> + * physical memory region that is used by the ACPI wakeup code.
>>>> + * This mapping must not have PG_G set. + */
>>>> + kernel_pmap->pm_pdir = PG_PS | PG_RW | PG_V;
>> I propose conditionalizing this code on "if (pseflag)". Of course, the
>> acpi suspend code will fail on 486's but we disable acpi entirely if the
>> bios date < 1999/1/1 and acpi isn't supported on the 486.
> as long as you are keeping this in mind, I have no objection as to how
> you tackle it..
> so if someone uses a 486 based embedded system (low power etc.)
> they can definitely not have any acpi support in the bios?
I will wait and see what others say. In general, I'm sure there are
other aspects of ACPI that require a Pentium. And remember, they could
still boot acpi with a 486 and use everything but suspend/resume.
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