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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 /include/asm-um
parent54d8d3b5a0ce1cdbad1d3154c9ea9732d394e9c7 (diff)
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[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.h6
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