diff options
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 83fb24a0282..106076b370f 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. |