From 859c0a5b9ca8eba2d65fa42f02505d76f8a712c7 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Wed, 30 Jan 2008 13:30:44 +0100 Subject: [PATCH] x86: get_desc_base This defines the get_desc_base function in asm-x86/desc_64.h to match the one in desc_32.h. If these two files ever get merged together, this function could be the same in both. Signed-off-by: Roland McGrath Cc: Andrew Morton Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- include/asm-x86/desc_64.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/include/asm-x86/desc_64.h b/include/asm-x86/desc_64.h index 7d48df72aef..230ac6e50a0 100644 --- a/include/asm-x86/desc_64.h +++ b/include/asm-x86/desc_64.h @@ -215,6 +215,16 @@ static inline void load_LDT(mm_context_t *pc) extern struct desc_ptr idt_descr; +static inline unsigned long get_desc_base(const void *ptr) +{ + const u32 *desc = ptr; + unsigned long base; + base = ((desc[0] >> 16) & 0x0000ffff) | + ((desc[1] << 16) & 0x00ff0000) | + (desc[1] & 0xff000000); + return base; +} + #endif /* !__ASSEMBLY__ */ #endif -- 2.20.1