diff options
Diffstat (limited to 'arch/x86/include/asm/vm86.h')
-rw-r--r-- | arch/x86/include/asm/vm86.h | 25 |
1 files changed, 1 insertions, 24 deletions
diff --git a/arch/x86/include/asm/vm86.h b/arch/x86/include/asm/vm86.h index 47c7648338ee..226d6c157ebc 100644 --- a/arch/x86/include/asm/vm86.h +++ b/arch/x86/include/asm/vm86.h @@ -27,32 +27,9 @@ struct kernel_vm86_regs { unsigned short gs, __gsh; }; -struct kernel_vm86_struct { - struct kernel_vm86_regs regs; -/* - * the below part remains on the kernel stack while we are in VM86 mode. - * 'tss.esp0' then contains the address of VM86_TSS_ESP0 below, and when we - * get forced back from VM86, the CPU and "SAVE_ALL" will restore the above - * 'struct kernel_vm86_regs' with the then actual values. - * Therefore, pt_regs in fact points to a complete 'kernel_vm86_struct' - * in kernelspace, hence we need not reget the data from userspace. - */ -#define VM86_TSS_ESP0 regs32 - struct pt_regs *regs32; /* here we save the pointer to the old regs */ -/* - * The below is not part of the structure, but the stack layout continues - * this way. In front of 'return-eip' may be some data, depending on - * compilation, so we don't rely on this and save the pointer to 'oldregs' - * in 'regs32' above. - * However, with GCC-2.7.2 and the current CFLAGS you see exactly this: - - long return-eip; from call to vm86() - struct pt_regs oldregs; user space registers as saved by syscall - */ -}; - struct vm86 { struct vm86plus_struct __user *vm86_info; + struct pt_regs *regs32; unsigned long v86flags; unsigned long v86mask; unsigned long saved_sp0; |