x86, um: untangle uml ldt.h

* turn asm/ldt.h into ldt.h; update the (very few) users
* take host_ldt.h into sysdep, kill symlink mess
* includes of asm/arch/ldt.h turn into asm/ldt.h now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

diff --git a/arch/um/Makefile b/arch/um/Makefile
index 33d59f1..909d16b 100644 (file)
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -20,7 +20,7 @@ core-y                        += $(ARCH_DIR)/kernel/          \
 
 # Have to precede the include because the included Makefiles reference them.
 SYMLINK_HEADERS := archparam.h system.h processor.h ptrace.h \
-       module.h vm-flags.h elf.h host_ldt.h
+       module.h vm-flags.h elf.h
 SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),$(ARCH_DIR)/include/asm/$(header))
 
 # XXX: The "os" symlink is only used by arch/um/include/os.h, which includes

diff --git a/arch/um/include/asm/host_ldt-i386.h b/arch/um/include/asm/host_ldt-i386.h
deleted file mode 100644 (file)
index b27cb0a..0000000
--- a/arch/um/include/asm/host_ldt-i386.h
+++ /dev/null
@@ -1,34 +0,0 @@
-#ifndef __ASM_HOST_LDT_I386_H
-#define __ASM_HOST_LDT_I386_H
-
-#include "asm/arch/ldt.h"
-
-/*
- * macros stolen from include/asm-i386/desc.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    )
-
-#endif

diff --git a/arch/um/include/asm/host_ldt-x86_64.h b/arch/um/include/asm/host_ldt-x86_64.h
deleted file mode 100644 (file)
index 74a63f7..0000000
--- a/arch/um/include/asm/host_ldt-x86_64.h
+++ /dev/null
@@ -1,38 +0,0 @@
-#ifndef __ASM_HOST_LDT_X86_64_H
-#define __ASM_HOST_LDT_X86_64_H
-
-#include "asm/arch/ldt.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) | \
-       ((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) | \
-       /* ((info)->lm << 21) | */ \
-       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    && \
-       (info)->lm              == 0)
-
-#endif

diff --git a/arch/um/include/asm/ldt.h b/arch/um/include/asm/ldt.h
deleted file mode 100644 (file)
index 52af512..0000000
--- a/arch/um/include/asm/ldt.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2004 Fujitsu Siemens Computers GmbH
- * Licensed under the GPL
- *
- * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
- */
-
-#ifndef __ASM_LDT_H
-#define __ASM_LDT_H
-
-#include <linux/mutex.h>
-#include "asm/host_ldt.h"
-
-extern void ldt_host_info(void);
-
-#define LDT_PAGES_MAX \
-       ((LDT_ENTRIES * LDT_ENTRY_SIZE)/PAGE_SIZE)
-#define LDT_ENTRIES_PER_PAGE \
-       (PAGE_SIZE/LDT_ENTRY_SIZE)
-#define LDT_DIRECT_ENTRIES \
-       ((LDT_PAGES_MAX*sizeof(void *))/LDT_ENTRY_SIZE)
-
-struct ldt_entry {
-       __u32 a;
-       __u32 b;
-};
-
-typedef struct uml_ldt {
-       int entry_count;
-       struct mutex lock;
-       union {
-               struct ldt_entry * pages[LDT_PAGES_MAX];
-               struct ldt_entry entries[LDT_DIRECT_ENTRIES];
-       } u;
-} uml_ldt_t;
-
-#endif

diff --git a/arch/um/include/asm/processor-i386.h b/arch/um/include/asm/processor-i386.h
index 4f8be00..82a9061 100644 (file)
--- a/arch/um/include/asm/processor-i386.h
+++ b/arch/um/include/asm/processor-i386.h
@@ -7,7 +7,7 @@
 #define __UM_PROCESSOR_I386_H
 
 #include "linux/string.h"
-#include "asm/host_ldt.h"
+#include <sysdep/host_ldt.h>
 #include "asm/segment.h"
 
 extern int host_has_cmov;

diff --git a/arch/um/include/asm/ptrace-x86_64.h b/arch/um/include/asm/ptrace-x86_64.h
index 4c47535..2653fba 100644 (file)
--- a/arch/um/include/asm/ptrace-x86_64.h
+++ b/arch/um/include/asm/ptrace-x86_64.h
@@ -9,7 +9,7 @@
 
 #include "linux/compiler.h"
 #include "asm/errno.h"
-#include "asm/host_ldt.h"
+#include <sysdep/host_ldt.h>
 
 #define __FRAME_OFFSETS /* Needed to get the R* macros */
 #include "asm/ptrace-generic.h"

diff --git a/arch/um/include/shared/ldt.h b/arch/um/include/shared/ldt.h
new file mode 100644 (file)
index 0000000..a7f999a
--- /dev/null
+++ b/arch/um/include/shared/ldt.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2004 Fujitsu Siemens Computers GmbH
+ * Licensed under the GPL
+ *
+ * Author: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
+ */
+
+#ifndef __ASM_LDT_H
+#define __ASM_LDT_H
+
+#include <linux/mutex.h>
+#include <sysdep/host_ldt.h>
+
+extern void ldt_host_info(void);
+
+#define LDT_PAGES_MAX \
+       ((LDT_ENTRIES * LDT_ENTRY_SIZE)/PAGE_SIZE)
+#define LDT_ENTRIES_PER_PAGE \
+       (PAGE_SIZE/LDT_ENTRY_SIZE)
+#define LDT_DIRECT_ENTRIES \
+       ((LDT_PAGES_MAX*sizeof(void *))/LDT_ENTRY_SIZE)
+
+struct ldt_entry {
+       __u32 a;
+       __u32 b;
+};
+
+typedef struct uml_ldt {
+       int entry_count;
+       struct mutex lock;
+       union {
+               struct ldt_entry * pages[LDT_PAGES_MAX];
+               struct ldt_entry entries[LDT_DIRECT_ENTRIES];
+       } u;
+} uml_ldt_t;
+
+#endif

diff --git a/arch/um/include/shared/sysdep-i386/host_ldt.h b/arch/um/include/shared/sysdep-i386/host_ldt.h
new file mode 100644 (file)
index 0000000..0953cc4
--- /dev/null
+++ b/arch/um/include/shared/sysdep-i386/host_ldt.h
@@ -0,0 +1,34 @@
+#ifndef __ASM_HOST_LDT_I386_H
+#define __ASM_HOST_LDT_I386_H
+
+#include <asm/ldt.h>
+
+/*
+ * macros stolen from include/asm-i386/desc.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    )
+
+#endif

diff --git a/arch/um/include/shared/sysdep-i386/tls.h b/arch/um/include/shared/sysdep-i386/tls.h
index 918fd3c..3455075 100644 (file)
--- a/arch/um/include/shared/sysdep-i386/tls.h
+++ b/arch/um/include/shared/sysdep-i386/tls.h
@@ -21,7 +21,7 @@ typedef struct um_dup_user_desc {
 
 # else /* __KERNEL__ */
 
-#  include <asm/ldt.h>
+#  include <ldt.h>
 typedef struct user_desc user_desc_t;
 
 # endif /* __KERNEL__ */

diff --git a/arch/um/include/shared/sysdep-x86_64/host_ldt.h b/arch/um/include/shared/sysdep-x86_64/host_ldt.h
new file mode 100644 (file)
index 0000000..e8b1be1
--- /dev/null
+++ b/arch/um/include/shared/sysdep-x86_64/host_ldt.h
@@ -0,0 +1,38 @@
+#ifndef __ASM_HOST_LDT_X86_64_H
+#define __ASM_HOST_LDT_X86_64_H
+
+#include <asm/ldt.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) | \
+       ((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) | \
+       /* ((info)->lm << 21) | */ \
+       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    && \
+       (info)->lm              == 0)
+
+#endif

diff --git a/arch/um/include/shared/sysdep-x86_64/tls.h b/arch/um/include/shared/sysdep-x86_64/tls.h
index 35f19f2..18c000d 100644 (file)
--- a/arch/um/include/shared/sysdep-x86_64/tls.h
+++ b/arch/um/include/shared/sysdep-x86_64/tls.h
@@ -22,7 +22,7 @@ typedef struct um_dup_user_desc {
 
 # else /* __KERNEL__ */
 
-#  include <asm/ldt.h>
+#  include <ldt.h>
 typedef struct user_desc user_desc_t;
 
 # endif /* __KERNEL__ */

diff --git a/arch/um/include/shared/um_mmu.h b/arch/um/include/shared/um_mmu.h
index f575ff9..4cc1ef4 100644 (file)
--- a/arch/um/include/shared/um_mmu.h
+++ b/arch/um/include/shared/um_mmu.h
@@ -8,7 +8,7 @@
 
 #include "uml-config.h"
 #include "mm_id.h"
-#include "asm/ldt.h"
+#include "ldt.h"
 
 typedef struct mm_context {
        struct mm_id id;