Date: Sun, 29 Oct 2006 14:50:58 +0000 (UTC) From: Ruslan Ermilov <ru@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: 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: <200610291450.k9TEowL4034801@repoman.freebsd.org>
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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)
Revision Changes Path
1.35 +1 -1 src/sys/boot/common/load_elf.c
1.82 +3 -3 src/sys/boot/i386/boot2/boot2.c
1.16 +1 -1 src/sys/boot/i386/libi386/elf32_freebsd.c
1.15 +2 -2 src/sys/boot/pc98/boot2/boot.c
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