diff options
| author | Glauber de Oliveira Costa <gcosta@redhat.com> | 2008-01-30 13:31:14 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:31:14 +0100 |
| commit | c81c6ca45a69478c7877b729af1942d2b80ef582 (patch) | |
| tree | e26aeaa7ace08ce222bd4cb28add95d18dbd4bbd /include/asm-x86/desc.h | |
| parent | 507f90c9f92592e7630b1c1e87bf92d2c9858cc6 (diff) | |
x86: unify set_tss_desc
This patch unifies the set_tss_desc between i386 and x86_64,
which can now have a common implementation. After the old
functions are removed from desc_{32,64}.h, nothing important is
left, and the files can be removed.
Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/desc.h')
| -rw-r--r-- | include/asm-x86/desc.h | 39 |
1 files changed, 33 insertions, 6 deletions
diff --git a/include/asm-x86/desc.h b/include/asm-x86/desc.h index d75bc0634313..c31715cf2218 100644 --- a/include/asm-x86/desc.h +++ b/include/asm-x86/desc.h @@ -165,6 +165,39 @@ static inline void pack_ldt(ldt_desc *ldt, unsigned long addr, #endif } +static inline void pack_tss(tss_desc *tss, unsigned long addr, + unsigned size, unsigned entry) +{ +#ifdef CONFIG_X86_64 + set_tssldt_descriptor(tss, + addr, entry, size); +#else + pack_descriptor(tss, (unsigned long)addr, + size, + 0x80 | entry, 0); +#endif +} + +static inline void __set_tss_desc(unsigned cpu, unsigned int entry, void *addr) +{ + struct desc_struct *d = get_cpu_gdt_table(cpu); + tss_desc tss; + + /* + * sizeof(unsigned long) coming from an extra "long" at the end + * of the iobitmap. See tss_struct definition in processor.h + * + * -1? seg base+limit should be pointing to the address of the + * last valid byte + */ + pack_tss(&tss, (unsigned long)addr, + IO_BITMAP_OFFSET + IO_BITMAP_BYTES + sizeof(unsigned long) - 1, + DESC_TSS); + write_gdt_entry(d, entry, &tss, DESC_TSS); +} + +#define set_tss_desc(cpu, addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr) + static inline void native_set_ldt(const void *addr, unsigned int entries) { if (likely(entries == 0)) @@ -222,12 +255,6 @@ static inline void native_load_tls(struct thread_struct *t, unsigned int cpu) gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i]; } -#ifdef CONFIG_X86_32 -# include "desc_32.h" -#else -# include "desc_64.h" -#endif - #define _LDT_empty(info) (\ (info)->base_addr == 0 && \ (info)->limit == 0 && \ |