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Viewing changes to arch/x86/include/asm/desc.h

  • Committer: Package Import Robot
  • Author(s): Alessio Igor Bogani
  • Date: 2011-10-26 11:13:05 UTC
  • Revision ID: package-import@ubuntu.com-20111026111305-04kado7d1u2er2rl
Tags: 3.2.0-16.25
Add new lowlatency kernel flavour

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arch/x86/include/asm/desc.h
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#include <asm/mmu.h>
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#include <linux/smp.h>
 
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#include <linux/mm_types.h>
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static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *info)
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{
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#define load_TLS(t, cpu)                        native_load_tls(t, cpu)
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#define set_ldt                                 native_set_ldt
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#ifdef CONFIG_X86_32
 
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#define load_user_cs_desc                       native_load_user_cs_desc
 
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#endif /*CONFIG_X86_32*/
 
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#define write_ldt_entry(dt, entry, desc)        native_write_ldt_entry(dt, entry, desc)
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#define write_gdt_entry(dt, entry, desc, type)  native_write_gdt_entry(dt, entry, desc, type)
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#define write_idt_entry(dt, entry, g)           native_write_idt_entry(dt, entry, g)
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        _set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS);
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}
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#ifdef CONFIG_X86_32
 
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static inline void set_user_cs(struct desc_struct *desc, unsigned long limit)
 
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{
 
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        limit = (limit - 1) / PAGE_SIZE;
 
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        desc->a = limit & 0xffff;
 
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        desc->b = (limit & 0xf0000) | 0x00c0fb00;
 
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}
 
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static inline void native_load_user_cs_desc(int cpu, struct mm_struct *mm)
 
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{
 
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        get_cpu_gdt_table(cpu)[GDT_ENTRY_DEFAULT_USER_CS] = (mm)->context.user_cs;
 
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}
 
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#define arch_add_exec_range arch_add_exec_range
 
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#define arch_remove_exec_range arch_remove_exec_range
 
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#define arch_flush_exec_range arch_flush_exec_range
 
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extern void arch_add_exec_range(struct mm_struct *mm, unsigned long limit);
 
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extern void arch_remove_exec_range(struct mm_struct *mm, unsigned long limit);
 
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extern void arch_flush_exec_range(struct mm_struct *mm);
 
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#endif /* CONFIG_X86_32 */
 
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#endif /* _ASM_X86_DESC_H */