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[PATCH] xen: x86: Rename usermode macro

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Rename user_mode to user_mode_vm and add a user_mode macro similar to the
x86-64 one.

This is useful for Xen because the linux xen kernel does not runs on the same
priviledge that a vanilla linux kernel, and with this we just need to redefine
user_mode().

Signed-off-by: Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk>
Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Vincent Hanquez 2005-06-23 00:08:44 -07:00 committed by Linus Torvalds
parent 1cc6f12e03
commit fa1e1bdf78
6 changed files with 7 additions and 5 deletions
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2
arch/i386/kernel/apic.c
View File

@ -1133,7 +1133,7 @@ inline void smp_local_timer_interrupt(struct pt_regs * regs)
}
#ifdef CONFIG_SMP
update_process_times(user_mode(regs));
update_process_times(user_mode_vm(regs));
#endif
}

2
arch/i386/kernel/ptrace.c
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@ -668,7 +668,7 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code)
info.si_code = TRAP_BRKPT;
/* User-mode eip? */
info.si_addr = user_mode(regs) ? (void __user *) regs->eip : NULL;
info.si_addr = user_mode_vm(regs) ? (void __user *) regs->eip : NULL;
/* Send us the fakey SIGTRAP */
force_sig_info(SIGTRAP, &info, tsk);

2
arch/i386/mach-voyager/voyager_smp.c
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@ -1288,7 +1288,7 @@ smp_local_timer_interrupt(struct pt_regs * regs)
per_cpu(prof_counter, cpu);
}
update_process_times(user_mode(regs));
update_process_times(user_mode_vm(regs));
}
if( ((1<<cpu) & voyager_extended_vic_processors) == 0)

2
arch/i386/oprofile/backtrace.c
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@ -91,7 +91,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth)
head = (struct frame_head *)regs->ebp;
#endif
if (!user_mode(regs)) {
if (!user_mode_vm(regs)) {
while (depth-- && valid_kernel_stack(head, regs))
head = dump_backtrace(head);
return;

3
include/asm-i386/ptrace.h
View File

@ -57,7 +57,8 @@ struct pt_regs {
#ifdef __KERNEL__
struct task_struct;
extern void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs, int error_code);
#define user_mode(regs) ((VM_MASK & (regs)->eflags) || (3 & (regs)->xcs))
#define user_mode(regs) (3 & (regs)->xcs)
#define user_mode_vm(regs) ((VM_MASK & (regs)->eflags) || user_mode(regs))
#define instruction_pointer(regs) ((regs)->eip)
#if defined(CONFIG_SMP) && defined(CONFIG_FRAME_POINTER)
extern unsigned long profile_pc(struct pt_regs *regs);

1
include/asm-x86_64/ptrace.h
View File

@ -82,6 +82,7 @@ struct pt_regs {
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
#define user_mode(regs) (!!((regs)->cs & 3))
#define user_mode_vm(regs) user_mode(regs)
#define instruction_pointer(regs) ((regs)->rip)
extern unsigned long profile_pc(struct pt_regs *regs);
void signal_fault(struct pt_regs *regs, void __user *frame, char *where);