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Date: 16 Oct 2006 16:04:25 +0200 From: Andi Kleen <ak@...e.de> To: "bibo,mao" <bibo.mao@...el.com> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] IA32 move PG0 page table within kernel data segment "bibo,mao" <bibo.mao@...el.com> writes: > Hi, > On i386 kernel image can compile and run at any physical address,kernel > will dynamically establish initial page table at PG0. Currently PG0 address > is adjacent to _end, that is to say PG0 page table is out of kernel data segment. > Some bootloader put initrd image next kernel data segment so that initial > page table will overwrite initrd imagte. This patch modify this and put PG0 > table at BSS segment and free this space later. > This patch limited kernel image size within 64M, it is possible to modify > ld script to remove this limit, but I am not familiar with ld script. > > Any comments is welcome. Looks like a fragile hack. x86-64 has a imho cleaner generic solution in e820_find_area(). I would suggest to port that over. -Andi - 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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