diff options
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/io.h | 24 | ||||
| -rw-r--r-- | arch/x86/include/asm/kgdb.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/ptrace.h | 18 | ||||
| -rw-r--r-- | arch/x86/include/asm/tsc.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/vdso.h | 14 | ||||
| -rw-r--r-- | arch/x86/include/asm/vgtod.h | 2 | ||||
| -rw-r--r-- | arch/x86/include/asm/vsyscall.h | 12 | ||||
| -rw-r--r-- | arch/x86/include/asm/vvar.h | 52 | ||||
| -rw-r--r-- | arch/x86/include/asm/xen/hypercall.h | 7 |
9 files changed, 73 insertions, 61 deletions
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h index 072273082528..d02804d650c4 100644 --- a/arch/x86/include/asm/io.h +++ b/arch/x86/include/asm/io.h @@ -38,7 +38,6 @@ #include <linux/string.h> #include <linux/compiler.h> -#include <asm-generic/int-ll64.h> #include <asm/page.h> #include <xen/xen.h> @@ -87,27 +86,6 @@ build_mmio_write(__writel, "l", unsigned int, "r", ) build_mmio_read(readq, "q", unsigned long, "=r", :"memory") build_mmio_write(writeq, "q", unsigned long, "r", :"memory") -#else - -static inline __u64 readq(const volatile void __iomem *addr) -{ - const volatile u32 __iomem *p = addr; - u32 low, high; - - low = readl(p); - high = readl(p + 1); - - return low + ((u64)high << 32); -} - -static inline void writeq(__u64 val, volatile void __iomem *addr) -{ - writel(val, addr); - writel(val >> 32, addr+4); -} - -#endif - #define readq_relaxed(a) readq(a) #define __raw_readq(a) readq(a) @@ -117,6 +95,8 @@ static inline void writeq(__u64 val, volatile void __iomem *addr) #define readq readq #define writeq writeq +#endif + /** * virt_to_phys - map virtual addresses to physical * @address: address to remap diff --git a/arch/x86/include/asm/kgdb.h b/arch/x86/include/asm/kgdb.h index 396f5b5fc4d7..77e95f54570a 100644 --- a/arch/x86/include/asm/kgdb.h +++ b/arch/x86/include/asm/kgdb.h @@ -77,6 +77,7 @@ static inline void arch_kgdb_breakpoint(void) } #define BREAK_INSTR_SIZE 1 #define CACHE_FLUSH_IS_SAFE 1 +#define GDB_ADJUSTS_BREAK_OFFSET extern int kgdb_ll_trap(int cmd, const char *str, struct pt_regs *regs, long err, int trap, int sig); diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h index 1babf8adecdf..94e7618fcac8 100644 --- a/arch/x86/include/asm/ptrace.h +++ b/arch/x86/include/asm/ptrace.h @@ -136,6 +136,7 @@ struct cpuinfo_x86; struct task_struct; extern unsigned long profile_pc(struct pt_regs *regs); +#define profile_pc profile_pc extern unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *regs); @@ -202,20 +203,11 @@ static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) #endif } -static inline unsigned long instruction_pointer(struct pt_regs *regs) -{ - return regs->ip; -} - -static inline unsigned long frame_pointer(struct pt_regs *regs) -{ - return regs->bp; -} +#define GET_IP(regs) ((regs)->ip) +#define GET_FP(regs) ((regs)->bp) +#define GET_USP(regs) ((regs)->sp) -static inline unsigned long user_stack_pointer(struct pt_regs *regs) -{ - return regs->sp; -} +#include <asm-generic/ptrace.h> /* Query offset/name of register from its name/offset */ extern int regs_query_register_offset(const char *name); diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h index 83e2efd181e2..9db5583b6d38 100644 --- a/arch/x86/include/asm/tsc.h +++ b/arch/x86/include/asm/tsc.h @@ -51,6 +51,10 @@ extern int unsynchronized_tsc(void); extern int check_tsc_unstable(void); extern unsigned long native_calibrate_tsc(void); +#ifdef CONFIG_X86_64 +extern cycles_t vread_tsc(void); +#endif + /* * Boot-time check whether the TSCs are synchronized across * all CPUs/cores: diff --git a/arch/x86/include/asm/vdso.h b/arch/x86/include/asm/vdso.h index 9064052b73de..bb0522850b74 100644 --- a/arch/x86/include/asm/vdso.h +++ b/arch/x86/include/asm/vdso.h @@ -1,20 +1,6 @@ #ifndef _ASM_X86_VDSO_H #define _ASM_X86_VDSO_H -#ifdef CONFIG_X86_64 -extern const char VDSO64_PRELINK[]; - -/* - * Given a pointer to the vDSO image, find the pointer to VDSO64_name - * as that symbol is defined in the vDSO sources or linker script. - */ -#define VDSO64_SYMBOL(base, name) \ -({ \ - extern const char VDSO64_##name[]; \ - (void *)(VDSO64_##name - VDSO64_PRELINK + (unsigned long)(base)); \ -}) -#endif - #if defined CONFIG_X86_32 || defined CONFIG_COMPAT extern const char VDSO32_PRELINK[]; diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h index 3d61e204826f..646b4c1ca695 100644 --- a/arch/x86/include/asm/vgtod.h +++ b/arch/x86/include/asm/vgtod.h @@ -23,8 +23,6 @@ struct vsyscall_gtod_data { struct timespec wall_to_monotonic; struct timespec wall_time_coarse; }; -extern struct vsyscall_gtod_data __vsyscall_gtod_data -__section_vsyscall_gtod_data; extern struct vsyscall_gtod_data vsyscall_gtod_data; #endif /* _ASM_X86_VGTOD_H */ diff --git a/arch/x86/include/asm/vsyscall.h b/arch/x86/include/asm/vsyscall.h index d0983d255fbd..d55597351f6a 100644 --- a/arch/x86/include/asm/vsyscall.h +++ b/arch/x86/include/asm/vsyscall.h @@ -16,27 +16,19 @@ enum vsyscall_num { #ifdef __KERNEL__ #include <linux/seqlock.h> -#define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16))) -#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16))) - /* Definitions for CONFIG_GENERIC_TIME definitions */ -#define __section_vsyscall_gtod_data __attribute__ \ - ((unused, __section__ (".vsyscall_gtod_data"),aligned(16))) -#define __section_vsyscall_clock __attribute__ \ - ((unused, __section__ (".vsyscall_clock"),aligned(16))) #define __vsyscall_fn \ __attribute__ ((unused, __section__(".vsyscall_fn"))) notrace #define VGETCPU_RDTSCP 1 #define VGETCPU_LSL 2 -extern int __vgetcpu_mode; -extern volatile unsigned long __jiffies; - /* kernel space (writeable) */ extern int vgetcpu_mode; extern struct timezone sys_tz; +#include <asm/vvar.h> + extern void map_vsyscall(void); #endif /* __KERNEL__ */ diff --git a/arch/x86/include/asm/vvar.h b/arch/x86/include/asm/vvar.h new file mode 100644 index 000000000000..341b3559452b --- /dev/null +++ b/arch/x86/include/asm/vvar.h @@ -0,0 +1,52 @@ +/* + * vvar.h: Shared vDSO/kernel variable declarations + * Copyright (c) 2011 Andy Lutomirski + * Subject to the GNU General Public License, version 2 + * + * A handful of variables are accessible (read-only) from userspace + * code in the vsyscall page and the vdso. They are declared here. + * Some other file must define them with DEFINE_VVAR. + * + * In normal kernel code, they are used like any other variable. + * In user code, they are accessed through the VVAR macro. + * + * Each of these variables lives in the vsyscall page, and each + * one needs a unique offset within the little piece of the page + * reserved for vvars. Specify that offset in DECLARE_VVAR. + * (There are 896 bytes available. If you mess up, the linker will + * catch it.) + */ + +/* Offset of vars within vsyscall page */ +#define VSYSCALL_VARS_OFFSET (3072 + 128) + +#if defined(__VVAR_KERNEL_LDS) + +/* The kernel linker script defines its own magic to put vvars in the + * right place. + */ +#define DECLARE_VVAR(offset, type, name) \ + EMIT_VVAR(name, VSYSCALL_VARS_OFFSET + offset) + +#else + +#define DECLARE_VVAR(offset, type, name) \ + static type const * const vvaraddr_ ## name = \ + (void *)(VSYSCALL_START + VSYSCALL_VARS_OFFSET + (offset)); + +#define DEFINE_VVAR(type, name) \ + type __vvar_ ## name \ + __attribute__((section(".vsyscall_var_" #name), aligned(16))) + +#define VVAR(name) (*vvaraddr_ ## name) + +#endif + +/* DECLARE_VVAR(offset, type, name) */ + +DECLARE_VVAR(0, volatile unsigned long, jiffies) +DECLARE_VVAR(8, int, vgetcpu_mode) +DECLARE_VVAR(128, struct vsyscall_gtod_data, vsyscall_gtod_data) + +#undef DECLARE_VVAR +#undef VSYSCALL_VARS_OFFSET diff --git a/arch/x86/include/asm/xen/hypercall.h b/arch/x86/include/asm/xen/hypercall.h index 8508bfe52296..d240ea950519 100644 --- a/arch/x86/include/asm/xen/hypercall.h +++ b/arch/x86/include/asm/xen/hypercall.h @@ -447,6 +447,13 @@ HYPERVISOR_hvm_op(int op, void *arg) return _hypercall2(unsigned long, hvm_op, op, arg); } +static inline int +HYPERVISOR_tmem_op( + struct tmem_op *op) +{ + return _hypercall1(int, tmem_op, op); +} + static inline void MULTI_fpu_taskswitch(struct multicall_entry *mcl, int set) { |