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[PATCH] uml: skas0-hold-own-ldt fixups for x86-64 

In a recent fixup i386 code was copied raw to x86_64 subarch to make it
compile again.

Here there are some little fixups and resyncs needed for it (mainly for
cleanliness sake) - I did an audit and found the rest of the code to be safe.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Cc: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Paolo 'Blaisorblade' Giarrusso 2006-02-01 03:06:28 -08:00 committed by Linus Torvalds
parent e5cf888631
commit 4cd7ed9442
1 changed files with 6 additions and 2 deletions
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8
include/asm-um/ldt-x86_64.h
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@ -39,11 +39,13 @@ typedef struct uml_ldt {
} uml_ldt_t;
/*
* macros stolen from include/asm-i386/desc.h
* macros stolen from include/asm-x86_64/desc.h
*/
#define LDT_entry_a(info) \
((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
/* Don't allow setting of the lm bit. It is useless anyways because
* 64bit system calls require __USER_CS. */
#define LDT_entry_b(info) \
(((info)->base_addr & 0xff000000) | \
(((info)->base_addr & 0x00ff0000) >> 16) | \
@ -54,6 +56,7 @@ typedef struct uml_ldt {
((info)->seg_32bit << 22) | \
((info)->limit_in_pages << 23) | \
((info)->useable << 20) | \
/* ((info)->lm << 21) | */ \
0x7000)
#define LDT_empty(info) (\
@ -64,6 +67,7 @@ typedef struct uml_ldt {
(info)->seg_32bit == 0 && \
(info)->limit_in_pages == 0 && \
(info)->seg_not_present == 1 && \
(info)->useable == 0 )
(info)->useable == 0 && \
(info)->lm == 0)
#endif