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x86/vm86: Move fields from 'struct kernel_vm86_struct' to 'struct vm86'

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Move the non-regs fields to the off-stack data.

Signed-off-by: Brian Gerst <brgerst@gmail.com>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1438148483-11932-3-git-send-email-brgerst@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Brian Gerst
2015-07-29 01:41:17 -04:00
committed by Ingo Molnar
parent 9fda6a0681
commit d4ce0f26c7
2 changed files with 30 additions and 28 deletions
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16
arch/x86/include/asm/vm86.h
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@@ -37,13 +37,7 @@ struct kernel_vm86_struct {
* 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 flags
unsigned long flags;
unsigned long screen_bitmap;
unsigned long cpu_type;
struct revectored_struct int_revectored;
struct revectored_struct int21_revectored;
struct vm86plus_info_struct vm86plus;
#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
@@ -59,10 +53,16 @@ struct kernel_vm86_struct {
struct vm86 {
struct vm86plus_struct __user *vm86_info;
unsigned long screen_bitmap;
unsigned long v86flags;
unsigned long v86mask;
unsigned long saved_sp0;
unsigned long flags;
unsigned long screen_bitmap;
unsigned long cpu_type;
struct revectored_struct int_revectored;
struct revectored_struct int21_revectored;
struct vm86plus_info_struct vm86plus;
};
#ifdef CONFIG_VM86