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authorPaolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>2006-03-31 02:30:25 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-31 12:18:52 -0800
commit3feb88562d149f078319e5a1b2f7acaa10251a5c (patch)
tree73fb00f0ecb9ed0c4cf8eec24c84253ce9620464 /arch/um/include/os.h
parent54d8d3b5a0ce1cdbad1d3154c9ea9732d394e9c7 (diff)
[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.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/um/include/os.h b/arch/um/include/os.h
index 1b780b5dacb..f88856c28a6 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 */