um: take ldt.h to arch/x86/um/asm/mm_context.h

it's x86-only and we have no business playing with it in asm/mmu.h; make
the latter have
	struct uml_arch_mm_context arch;
instead of
	struct uml_ldt ldt;
and let arch/<subarch>/um/asm/mm_context.h decide what'll be in there.
While we are at it, kill host_ldt.h - it's not needed in part of places
that include it (we want asm/ldt.h in those) and it can be trivially
expanded into the single remaining one.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>

2 files changed, 0 insertions, 38 deletions

diff --git a/arch/x86/um/shared/sysdep/host_ldt.h b/arch/x86/um/shared/sysdep/host_ldt.h
deleted file mode 100644
index 246ff7ace5e5..000000000000
--- a/arch/x86/um/shared/sysdep/host_ldt.h
+++ /dev/null
@@ -1,37 +0,0 @@
-#ifndef __ASM_HOST_LDT_H
-#define __ASM_HOST_LDT_H
-
-#include <asm/ldt.h>
-
-#define LDT_entry_a(info) \
-        ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
-
-#define LDT_entry_b(info) \
-        (((info)->base_addr & 0xff000000) | \
-        (((info)->base_addr & 0x00ff0000) >> 16) | \
-        ((info)->limit & 0xf0000) | \
-        (((info)->read_exec_only ^ 1) << 9) | \
-        ((info)->contents << 10) | \
-        (((info)->seg_not_present ^ 1) << 15) | \
-        ((info)->seg_32bit << 22) | \
-        ((info)->limit_in_pages << 23) | \
-        ((info)->useable << 20) | \
-        0x7000)
-
-#define _LDT_empty(info) (\
-        (info)->base_addr       == 0    && \
-        (info)->limit           == 0    && \
-        (info)->contents        == 0    && \
-        (info)->read_exec_only  == 1    && \
-        (info)->seg_32bit       == 0    && \
-        (info)->limit_in_pages  == 0    && \
-        (info)->seg_not_present == 1    && \
-        (info)->useable         == 0    )
-
-#ifdef CONFIG_X86_64
-#define LDT_empty(info) (_LDT_empty(info) && ((info)->lm == 0))
-#else
-#define LDT_empty(info) (_LDT_empty(info))
-#endif
-
-#endif
diff --git a/arch/x86/um/shared/sysdep/tls.h b/arch/x86/um/shared/sysdep/tls.h
index f2f30bd67b9b..27cce00c6b30 100644
--- a/arch/x86/um/shared/sysdep/tls.h
+++ b/arch/x86/um/shared/sysdep/tls.h
@@ -24,7 +24,6 @@ typedef struct um_dup_user_desc {
 
 # else /* __KERNEL__ */
 
-#  include <ldt.h>
 typedef struct user_desc user_desc_t;
 
 # endif /* __KERNEL__ */