diff options
| author | Roland McGrath <roland@redhat.com> | 2008-02-26 13:00:18 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-02-29 18:55:39 +0100 |
| commit | 3d00daf44654dc75629caf42816ac4e293658724 (patch) | |
| tree | 82775510cc3975ef28e800b6d0ea4032cbf86b79 /arch/x86/kernel/step.c | |
| parent | c0f4133b8f70769bc8dda977feb9a29109d6ccca (diff) | |
x86: tls prevent_tail_call
Fix a kernel bug (vmware boot problem) reported by Tomasz Grobelny,
which occurs with certain .config variants and gccs.
The x86 TLS cleanup in commit efd1ca52d04d2f6df337a3332cee56cd60e6d4c4
made the sys_set_thread_area and sys_get_thread_area functions ripe for
tail call optimization. If the compiler chooses to use it for them, it
can clobber the user trap frame because these are asmlinkage functions.
Reported-by: Tomasz Grobelny <tomasz@grobelny.oswiecenia.net>
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/step.c')
0 files changed, 0 insertions, 0 deletions