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author | David Woodhouse <dwmw2@infradead.org> | 2006-08-30 23:30:38 +0100 |
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committer | David Woodhouse <dwmw2@infradead.org> | 2006-08-30 23:30:38 +0100 |
commit | 0a7d5f8ce960e74fa22986bda4af488539796e49 (patch) | |
tree | e29ad17808a5c3410518e22dae8dfe94801b59f3 /arch/x86_64/kernel/machine_kexec.c | |
parent | 0165508c80a2b5d5268d9c5dfa9b30c534a33693 (diff) | |
parent | dc709bd190c130b299ac19d596594256265c042a (diff) | |
download | op-kernel-dev-0a7d5f8ce960e74fa22986bda4af488539796e49.zip op-kernel-dev-0a7d5f8ce960e74fa22986bda4af488539796e49.tar.gz |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/x86_64/kernel/machine_kexec.c')
-rw-r--r-- | arch/x86_64/kernel/machine_kexec.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/x86_64/kernel/machine_kexec.c b/arch/x86_64/kernel/machine_kexec.c index 83fb24a..106076b 100644 --- a/arch/x86_64/kernel/machine_kexec.c +++ b/arch/x86_64/kernel/machine_kexec.c @@ -207,14 +207,11 @@ NORET_TYPE void machine_kexec(struct kimage *image) __flush_tlb(); - /* The segment registers are funny things, they are - * automatically loaded from a table, in memory wherever you - * set them to a specific selector, but this table is never - * accessed again unless you set the segment to a different selector. - * - * The more common model are caches where the behide - * the scenes work is done, but is also dropped at arbitrary - * times. + /* The segment registers are funny things, they have both a + * visible and an invisible part. Whenever the visible part is + * set to a specific selector, the invisible part is loaded + * with from a table in memory. At no other time is the + * descriptor table in memory accessed. * * I take advantage of this here by force loading the * segments, before I zap the gdt with an invalid value. |