From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/arch/x86/include/asm/desc_defs.h | 101 ++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 kernel/arch/x86/include/asm/desc_defs.h (limited to 'kernel/arch/x86/include/asm/desc_defs.h') diff --git a/kernel/arch/x86/include/asm/desc_defs.h b/kernel/arch/x86/include/asm/desc_defs.h new file mode 100644 index 000000000..278441f39 --- /dev/null +++ b/kernel/arch/x86/include/asm/desc_defs.h @@ -0,0 +1,101 @@ +/* Written 2000 by Andi Kleen */ +#ifndef _ASM_X86_DESC_DEFS_H +#define _ASM_X86_DESC_DEFS_H + +/* + * Segment descriptor structure definitions, usable from both x86_64 and i386 + * archs. + */ + +#ifndef __ASSEMBLY__ + +#include + +/* + * FIXME: Accessing the desc_struct through its fields is more elegant, + * and should be the one valid thing to do. However, a lot of open code + * still touches the a and b accessors, and doing this allow us to do it + * incrementally. We keep the signature as a struct, rather than an union, + * so we can get rid of it transparently in the future -- glommer + */ +/* 8 byte segment descriptor */ +struct desc_struct { + union { + struct { + unsigned int a; + unsigned int b; + }; + struct { + u16 limit0; + u16 base0; + unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1; + unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8; + }; + }; +} __attribute__((packed)); + +#define GDT_ENTRY_INIT(flags, base, limit) { { { \ + .a = ((limit) & 0xffff) | (((base) & 0xffff) << 16), \ + .b = (((base) & 0xff0000) >> 16) | (((flags) & 0xf0ff) << 8) | \ + ((limit) & 0xf0000) | ((base) & 0xff000000), \ + } } } + +enum { + GATE_INTERRUPT = 0xE, + GATE_TRAP = 0xF, + GATE_CALL = 0xC, + GATE_TASK = 0x5, +}; + +/* 16byte gate */ +struct gate_struct64 { + u16 offset_low; + u16 segment; + unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1; + u16 offset_middle; + u32 offset_high; + u32 zero1; +} __attribute__((packed)); + +#define PTR_LOW(x) ((unsigned long long)(x) & 0xFFFF) +#define PTR_MIDDLE(x) (((unsigned long long)(x) >> 16) & 0xFFFF) +#define PTR_HIGH(x) ((unsigned long long)(x) >> 32) + +enum { + DESC_TSS = 0x9, + DESC_LDT = 0x2, + DESCTYPE_S = 0x10, /* !system */ +}; + +/* LDT or TSS descriptor in the GDT. 16 bytes. */ +struct ldttss_desc64 { + u16 limit0; + u16 base0; + unsigned base1 : 8, type : 5, dpl : 2, p : 1; + unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8; + u32 base3; + u32 zero1; +} __attribute__((packed)); + +#ifdef CONFIG_X86_64 +typedef struct gate_struct64 gate_desc; +typedef struct ldttss_desc64 ldt_desc; +typedef struct ldttss_desc64 tss_desc; +#define gate_offset(g) ((g).offset_low | ((unsigned long)(g).offset_middle << 16) | ((unsigned long)(g).offset_high << 32)) +#define gate_segment(g) ((g).segment) +#else +typedef struct desc_struct gate_desc; +typedef struct desc_struct ldt_desc; +typedef struct desc_struct tss_desc; +#define gate_offset(g) (((g).b & 0xffff0000) | ((g).a & 0x0000ffff)) +#define gate_segment(g) ((g).a >> 16) +#endif + +struct desc_ptr { + unsigned short size; + unsigned long address; +} __attribute__((packed)) ; + +#endif /* !__ASSEMBLY__ */ + +#endif /* _ASM_X86_DESC_DEFS_H */ -- cgit 1.2.3-korg