On Wed, 2006-04-19 at 11:41 +1000, Nigel Cunningham wrote:
> Hi.
>
> On Wednesday 19 April 2006 11:22, Shaohua Li wrote:
> > On Wed, 2006-04-19 at 08:38 +1000, Nigel Cunningham wrote:
> > > Hi.
> > >
> > > On Wednesday 12 April 2006 12:38, Shaohua Li wrote:
> > > > @@ -1400,6 +1401,111 @@ static void set_mca_bus(int x)
> > > > static void set_mca_bus(int x) { }
> > > > #endif
> > > >
> > > > +#ifdef CONFIG_SOFTWARE_SUSPEND
> > > > +static void __init mark_nosave_page_range(unsigned long start,
> > > > unsigned long end) +{
> > > > + struct page *page;
> > > > + while (start <= end) {
> > >
> > > Should this be start < end? (End is usually the first byte of the next
> > > zone IIUC).
> >
> > Thanks for looking at it. Yes you are right. Before calling this
> > routine, I already decrement 1 for 'end', so the routine will have the
> > last page pfn.
>
> Ah. I see. In the call itself. Sneaky :)
>
> Would you consider modifying that bit so it doesn't confuse others in the
> future?
I'm a little lazy :), but it isn't really confusing anyway.
> Oh, and while we're on the topic, if only part of a page is NVS, what's the
> right behaviour? My e820 table has:
>
> BIOS-e820: 000000003dff0000 - 000000003dffffc0 (ACPI data)
> BIOS-e820: 000000003dffffc0 - 000000003e000000 (ACPI NVS)
If only part of a page is NVS, my patch will save the whole page. Any
other idea?
Thanks,
Shaohua
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