diff options
| author | Andy Lutomirski <luto@amacapital.net> | 2014-09-23 10:50:55 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-10-28 11:22:12 +0100 |
| commit | 287e013108a104e459e675432cf20087feab2b67 (patch) | |
| tree | 2eaf125b65a6bade4d86fba105305dc8c6870fa8 /arch/x86/include/asm/vvar.h | |
| parent | 9c0080ef93bce34db130db6dc3bd946348e6a203 (diff) | |
x86/vdso: Make the PER_CPU segment 32 bits
IMO users ought not to be able to use 16-bit segments without
using modify_ldt. Fortunately, it's impossible to break
espfix64 by loading the PER_CPU segment into SS because it's
PER_CPU is marked read-only and SS cannot contain an RO segment,
but marking PER_CPU as 32-bit is less fragile.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/179f490d659307873eefd09206bebd417e2ab5ad.1411494540.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/vvar.h')
0 files changed, 0 insertions, 0 deletions