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Message-ID: <86802c440902281240i11423a95l98e330768ac6ca18@mail.gmail.com> Date: Sat, 28 Feb 2009 12:40:08 -0800 From: Yinghai Lu <yinghai@...nel.org> To: Jeremy Fitzhardinge <jeremy@...p.org> Cc: Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>, "the arch/x86 maintainers" <x86@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com> Subject: Re: brk patches.. On Sat, Feb 28, 2009 at 12:17 AM, Jeremy Fitzhardinge <jeremy@...p.org> wrote: > Yinghai Lu wrote: >> >> Yinghai Lu wrote: >> >>> >>> wonder if boot loader check uncompress size aka vmlinux size in bzImage >>> before it find one good position for bzImage...? >>> >>> >> >> Jeremy's brk patches may break: >> 1. kexec load 64bit vmlinux on some ram that near the memory hole etc. >> blindly to use ram after _end may have some problem >> 2. coreboot aka linux is using elf (by mkelfImage : vmlinux + initrd), >> initrd became one section after _end... >> could cause initrd get overwrite... by extend _brk >> > > But its no different from what i386 does now to allocate its initial > pagetables. How does this not break now? > it will try to use initial page table af first, and it is not big enough, it will according to e820 and other reserved_early areas to find good positions. YH -- 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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