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authorEric W. Biederman <ebiederm@xmission.com>2006-07-30 03:03:20 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-07-31 13:28:38 -0700
commit2a8a3d5b65e86ec1dfef7d268c64a909eab94af7 (patch)
tree90d4f3e42233c4b9e0385a114b5e22ddda6b57e8 /arch/x86_64
parentc35a7261eaf0e57924e2c56c6d72dc44ee9f3634 (diff)
downloadop-kernel-dev-2a8a3d5b65e86ec1dfef7d268c64a909eab94af7.zip
op-kernel-dev-2a8a3d5b65e86ec1dfef7d268c64a909eab94af7.tar.gz
[PATCH] machine_kexec.c: Fix the description of segment handling
One of my original comments in machine_kexec was unclear and this should fix it. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Cc: Andi Kleen <ak@muc.de> Acked-by: Horms <horms@verge.net.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64')
-rw-r--r--arch/x86_64/kernel/machine_kexec.c13
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.
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