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authorRichard Weinberger <richard@nod.at>2015-05-12 00:17:28 +0200
committerRichard Weinberger <richard@nod.at>2015-05-31 17:32:36 +0200
commitf8d65d27e677da0ce33de570e3068308a77ed2b1 (patch)
treeda725dd9a167adf8bfaaab016e5ce533ae2c4161 /arch/x86/um
parent1d04c8d77934d9406cc8219d97be2f0188f502d2 (diff)
downloadlinux-f8d65d27e677da0ce33de570e3068308a77ed2b1.tar.bz2
um: Rework uaccess code
Rework UML's uaccess code to reuse as much as possible from asm-generic/uaccess.c. Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/x86/um')
-rw-r--r--arch/x86/um/asm/checksum.h1
-rw-r--r--arch/x86/um/asm/elf.h2
-rw-r--r--arch/x86/um/asm/processor.h2
-rw-r--r--arch/x86/um/asm/segment.h8
4 files changed, 11 insertions, 2 deletions
diff --git a/arch/x86/um/asm/checksum.h b/arch/x86/um/asm/checksum.h
index 4b181b74454f..ee940185e89f 100644
--- a/arch/x86/um/asm/checksum.h
+++ b/arch/x86/um/asm/checksum.h
@@ -3,6 +3,7 @@
#include <linux/string.h>
#include <linux/in6.h>
+#include <linux/uaccess.h>
/*
* computes the checksum of a memory block at buff, length len,
diff --git a/arch/x86/um/asm/elf.h b/arch/x86/um/asm/elf.h
index 0a656b727b1a..548197212a45 100644
--- a/arch/x86/um/asm/elf.h
+++ b/arch/x86/um/asm/elf.h
@@ -200,8 +200,6 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG];
typedef struct user_i387_struct elf_fpregset_t;
-#define task_pt_regs(t) (&(t)->thread.regs)
-
struct task_struct;
extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
diff --git a/arch/x86/um/asm/processor.h b/arch/x86/um/asm/processor.h
index 2a206d2b14ab..233ee09c1ce8 100644
--- a/arch/x86/um/asm/processor.h
+++ b/arch/x86/um/asm/processor.h
@@ -28,6 +28,8 @@ static inline void rep_nop(void)
#define cpu_relax() rep_nop()
#define cpu_relax_lowlatency() cpu_relax()
+#define task_pt_regs(t) (&(t)->thread.regs)
+
#include <asm/processor-generic.h>
#endif
diff --git a/arch/x86/um/asm/segment.h b/arch/x86/um/asm/segment.h
index 45183fcd10b6..41dd5e1f3cd7 100644
--- a/arch/x86/um/asm/segment.h
+++ b/arch/x86/um/asm/segment.h
@@ -7,4 +7,12 @@ extern int host_gdt_entry_tls_min;
#define GDT_ENTRY_TLS_MIN host_gdt_entry_tls_min
#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
+typedef struct {
+ unsigned long seg;
+} mm_segment_t;
+
+#define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
+#define KERNEL_DS MAKE_MM_SEG(~0UL)
+#define USER_DS MAKE_MM_SEG(TASK_SIZE)
+
#endif