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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 /include/asm-um | |
| parent | 54d8d3b5a0ce1cdbad1d3154c9ea9732d394e9c7 (diff) | |
| download | linux-3feb88562d149f078319e5a1b2f7acaa10251a5c.tar.gz linux-3feb88562d149f078319e5a1b2f7acaa10251a5c.tar.bz2 linux-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 'include/asm-um')
| -rw-r--r-- | include/asm-um/segment.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/include/asm-um/segment.h b/include/asm-um/segment.h index 48775452e2cc..45183fcd10b6 100644 --- a/include/asm-um/segment.h +++ b/include/asm-um/segment.h @@ -1,6 +1,10 @@ #ifndef __UM_SEGMENT_H #define __UM_SEGMENT_H -#include "asm/arch/segment.h" +extern int host_gdt_entry_tls_min; + +#define GDT_ENTRY_TLS_ENTRIES 3 +#define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min +#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) #endif |