Date: Mon, 30 Oct 2006 11:55:54 -0500 From: John Baldwin <jhb@freebsd.org> To: Ruslan Ermilov <ru@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/boot/common load_elf.c src/sys/boot/i386/boot2 boot2.c src/sys/boot/i386/libi386 elf32_freebsd.c src/sys/boot/pc98/boot2 boot.c Message-ID: <200610301155.55597.jhb@freebsd.org> In-Reply-To: <200610291450.k9TEowL4034801@repoman.freebsd.org> References: <200610291450.k9TEowL4034801@repoman.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sunday 29 October 2006 09:50, Ruslan Ermilov wrote: > ru 2006-10-29 14:50:58 UTC > > FreeBSD src repository > > Modified files: > sys/boot/common load_elf.c > sys/boot/i386/boot2 boot2.c > sys/boot/i386/libi386 elf32_freebsd.c > sys/boot/pc98/boot2 boot.c > Log: > Because the BTX mini-kernel now uses flat memory mode and clients > are no longer limited to a virtual address space of 16 megabytes, > only mask high two bits of a virtual address. This allows to load > larger kernels (up to 1 gigabyte). Not masking addresses at all > was a bad idea on machines with less than >3G of memory -- kernels > are linked at 0xc0xxxxxx, and that would attempt to load a kernel > at above 3G. By masking only two highest bits we stay within the > safe limits while still allowing to boot larger kernels. > > (This is a safer reimplmentation of sys/boot/i386/boot2/boot.2.c > rev. 1.71.) > > Prodded by: jhb > Tested by: nyan (pc98) Thanks! -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200610301155.55597.jhb>