Date: Mon, 19 Dec 2005 14:20:02 -0500 From: John Baldwin <jhb@freebsd.org> To: Maxim.Sobolev@portaone.com Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/boot/i386/loader main.c Message-ID: <200512191420.03927.jhb@freebsd.org> In-Reply-To: <43A6FCD0.4030809@portaone.com> References: <200512190926.jBJ9QhbD078141@repoman.freebsd.org> <200512191033.33186.jhb@freebsd.org> <43A6FCD0.4030809@portaone.com>
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On Monday 19 December 2005 01:32 pm, Maxim Sobolev wrote: > John Baldwin wrote: > > On Monday 19 December 2005 04:26 am, Maxim Sobolev wrote: > >> sobomax 2005-12-19 09:26:42 UTC > >> > >> FreeBSD src repository > >> > >> Modified files: > >> sys/boot/i386/loader main.c > >> Log: > >> If LOADER_BZIP2_SUPPORT is defined allocate heap in the 1MB-4MB range > >> to provide enough room for decompression (up to 2.5MB is necessary). > >> This should be safe to do since we load i386 kernels after 8MB mark now, > >> so that 16MB is the minimum amount of RAM necessary to even boot > >> FreeBSD. > > > > Err, I thought we loaded PAE kernels at 2MB and non-PAE kernels at 4MB to > > skip the first PSE page (PSE pages are 2MB on PAE). > > You are right, my mistake, sorry. In any case memory in the range > 1MB-4MB can be used by default. Errm, no it can't. PAE kernels (and amd64 kernels I think) are both loaded at 2MB, so that only leaves memory in the range 1MB-2MB. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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