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Date: Sat, 2 Dec 2006 13:05:45 +0000 From: Pavel Machek <pavel@....cz> To: Shaohua Li <shaohua.li@...el.com> Cc: lkml <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...l.org> Subject: Re: [patch]VMSPLIT_2G conflicts with PAE Hi! > PAGE_OFFSET is 0x78000000 with VMSPLIT_2G, this address is in the middle > of the second pgd entry with pae enabled. This breaks assumptions > (address is aligned to pgd entry's address) in a lot of places like > pagetable_init. Fixing the assumptions is hard (eg, low mapping). SO I > just changed the address to 0x80000000. > > Signed-off-by: Shaohua Li <shaohua.li@...el.com> > > diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig > index 8ff1c6f..fddfb26 100644 > --- a/arch/i386/Kconfig > +++ b/arch/i386/Kconfig > @@ -532,7 +532,7 @@ endchoice > config PAGE_OFFSET > hex > default 0xB0000000 if VMSPLIT_3G_OPT > - default 0x78000000 if VMSPLIT_2G > + default 0x80000000 if VMSPLIT_2G > default 0x40000000 if VMSPLIT_1G > default 0xC0000000 Do we allow user entering arbitrary value here? In any case, it would be nice to document alignment requirements of this one, because otherwise someone *will* get it wrong. -- Thanks for all the (sleeping) penguins. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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