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| author | Vegard Nossum <vegard.nossum@oracle.com> | 2023-12-19 16:12:00 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-12-20 10:57:51 +0100 |
| commit | bc90aefa99f74452d549d503a3f1cbf3adc9c6bb (patch) | |
| tree | bec0e959b88282d31132cec1ed2154921815a725 /arch/x86/kernel/cpu | |
| parent | 3b184b71dfcb156e08246f8fbe0cd088c6a6efed (diff) | |
x86/asm: Add DB flag to 32-bit percpu GDT entry
The D/B size flag for the 32-bit percpu GDT entry was not set.
The Intel manual (vol 3, section 3.4.5) only specifies the meaning of
this flag for three cases:
1) code segments used for %cs -- doesn't apply here
2) stack segments used for %ss -- doesn't apply
3) expand-down data segments -- but we don't have the expand-down flag
set, so it also doesn't apply here
The flag likely doesn't do anything here, although the manual does also
say: "This flag should always be set to 1 for 32-bit code and data
segments [...]" so we should probably do it anyway.
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20231219151200.2878271-6-vegard.nossum@oracle.com
Diffstat (limited to 'arch/x86/kernel/cpu')
0 files changed, 0 insertions, 0 deletions