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| author | Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk> | 2005-06-23 07:08:46 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 16:45:14 (GMT) |
| commit | 76381fee7e8feb4c22be636aa5d4765dbe4fbf9e (patch) | |
| tree | e12d15d64acb25dc35b4ab9d022314243181bc10 /arch/x86_64/kernel | |
| parent | e9129e56e9ec50c0689eb4cf7a3ca132f1e776db (diff) | |
| download | linux-fsl-qoriq-76381fee7e8feb4c22be636aa5d4765dbe4fbf9e.tar.xz | |
[PATCH] xen: x86_64: use more usermode macro
Make use of the user_mode macro where it's possible. This is useful for Xen
because it will need only to redefine only the macro to a hypervisor call.
Signed-off-by: Vincent Hanquez <vincent.hanquez@cl.cam.ac.uk>
Cc: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/kernel')
| -rw-r--r-- | arch/x86_64/kernel/signal.c | 2 | ||||
| -rw-r--r-- | arch/x86_64/kernel/traps.c | 18 |
2 files changed, 10 insertions, 10 deletions
diff --git a/arch/x86_64/kernel/signal.c b/arch/x86_64/kernel/signal.c index 0446e8b..98b7ba9 100644 --- a/arch/x86_64/kernel/signal.c +++ b/arch/x86_64/kernel/signal.c @@ -422,7 +422,7 @@ int do_signal(struct pt_regs *regs, sigset_t *oldset) * kernel mode. Just return without doing anything * if so. */ - if ((regs->cs & 3) != 3) + if (!user_mode(regs)) return 1; if (try_to_freeze(0)) diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c index 21706c1..121646f 100644 --- a/arch/x86_64/kernel/traps.c +++ b/arch/x86_64/kernel/traps.c @@ -274,7 +274,7 @@ EXPORT_SYMBOL(dump_stack); void show_registers(struct pt_regs *regs) { int i; - int in_kernel = (regs->cs & 3) == 0; + int in_kernel = !user_mode(regs); unsigned long rsp; const int cpu = safe_smp_processor_id(); struct task_struct *cur = cpu_pda[cpu].pcurrent; @@ -318,7 +318,7 @@ void handle_BUG(struct pt_regs *regs) struct bug_frame f; char tmp; - if (regs->cs & 3) + if (user_mode(regs)) return; if (__copy_from_user(&f, (struct bug_frame *) regs->rip, sizeof(struct bug_frame))) @@ -437,7 +437,7 @@ static void do_trap(int trapnr, int signr, char *str, } #endif - if ((regs->cs & 3) != 0) { + if (user_mode(regs)) { struct task_struct *tsk = current; if (exception_trace && unhandled_signal(tsk, signr)) @@ -522,7 +522,7 @@ asmlinkage void do_general_protection(struct pt_regs * regs, long error_code) } #endif - if ((regs->cs & 3)!=0) { + if (user_mode(regs)) { struct task_struct *tsk = current; if (exception_trace && unhandled_signal(tsk, SIGSEGV)) @@ -638,7 +638,7 @@ asmlinkage struct pt_regs *sync_regs(struct pt_regs *eregs) if (eregs == (struct pt_regs *)eregs->rsp) ; /* Exception from user space */ - else if (eregs->cs & 3) + else if (user_mode(eregs)) regs = ((struct pt_regs *)current->thread.rsp0) - 1; /* Exception from kernel and interrupts are enabled. Move to kernel process stack. */ @@ -697,7 +697,7 @@ asmlinkage void do_debug(struct pt_regs * regs, unsigned long error_code) * allowing programs to debug themselves without the ptrace() * interface. */ - if ((regs->cs & 3) == 0) + if (!user_mode(regs)) goto clear_TF_reenable; /* * Was the TF flag set by a debugger? If so, clear it now, @@ -715,7 +715,7 @@ asmlinkage void do_debug(struct pt_regs * regs, unsigned long error_code) info.si_signo = SIGTRAP; info.si_errno = 0; info.si_code = TRAP_BRKPT; - if ((regs->cs & 3) == 0) + if (!user_mode(regs)) goto clear_dr7; info.si_addr = (void __user *)regs->rip; @@ -756,7 +756,7 @@ asmlinkage void do_coprocessor_error(struct pt_regs *regs) unsigned short cwd, swd; conditional_sti(regs); - if ((regs->cs & 3) == 0 && + if (!user_mode(regs) && kernel_math_error(regs, "kernel x87 math error")) return; @@ -822,7 +822,7 @@ asmlinkage void do_simd_coprocessor_error(struct pt_regs *regs) unsigned short mxcsr; conditional_sti(regs); - if ((regs->cs & 3) == 0 && + if (!user_mode(regs) && kernel_math_error(regs, "kernel simd math error")) return; |