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| author |   Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> | 2006-03-31 02:30:25 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-31 12:18:52 -0800 |
| commit | 3feb88562d149f078319e5a1b2f7acaa10251a5c (patch) | |
| tree | 73fb00f0ecb9ed0c4cf8eec24c84253ce9620464 /arch/um/include/os.h | |
| parent | [PATCH] uml: add arch_switch_to for newly forked thread (diff) | |
| download | linux-dev-3feb88562d149f078319e5a1b2f7acaa10251a5c.tar.xz linux-dev-3feb88562d149f078319e5a1b2f7acaa10251a5c.zip | |
[PATCH] uml: check for differences in host support
If running on a host not supporting TLS (for instance 2.4) we should report
that cleanly to the user, instead of printing not comprehensible "error 5" for
that.
Additionally, i386 and x86_64 support different ranges for
user_desc->entry_number, and we must account for that; we couldn't pass
ourselves -1 because we need to override previously existing TLS descriptors
which glibc has possibly set, so test at startup the range to use.
x86 and x86_64 existing ranges are hardcoded.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/um/include/os.h')
| -rw-r--r-- | arch/um/include/os.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/um/include/os.h b/arch/um/include/os.h index 1b780b5dacbe..f88856c28a66 100644 --- a/arch/um/include/os.h +++ b/arch/um/include/os.h @@ -173,6 +173,7 @@ extern int os_fchange_dir(int fd); extern void os_early_checks(void); extern int can_do_skas(void); extern void os_check_bugs(void); +extern void check_host_supports_tls(int *supports_tls, int *tls_min); /* Make sure they are clear when running in TT mode. Required by * SEGV_MAYBE_FIXABLE */ |