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| author | Joe Korty <joe.korty@ccur.com> | 2006-12-07 02:14:04 +0100 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2006-12-07 02:14:04 +0100 |
| commit | 74b47a7844501445d41d704fe7c626f4b1819508 (patch) | |
| tree | e05179601b7f541838913aa9874fd9ae69418eb0 | |
| parent | 249e83fe839a13b5dc94285daeeaf70f6e54d930 (diff) | |
| download | op-kernel-dev-74b47a7844501445d41d704fe7c626f4b1819508.zip op-kernel-dev-74b47a7844501445d41d704fe7c626f4b1819508.tar.gz | |
[PATCH] i386: Fix entry.S code with !CONFIG_VM86
The entry.S code at work_notifysig is surely wrong. It drops into unrelated
code if the branch to work_notifysig_v86 is taken, and CONFIG_VM86=n.
[PATCH] Make vm86 support optional
tree 9b5daef5280800a0006343a17f63072658d91a1d
pushed to git Jan 8, 2006, and first appears in 2.6.16
The 'fix' here is to also compile out the vm86 test & branch when
CONFIG_VM86=n.
Signed-off-by: Joe Korty <joe.korty@ccur.com>
Signed-off-by: Andi Kleen <ak@suse.de>
| -rw-r--r-- | arch/i386/kernel/entry.S | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S index d7423ef..0220bc8 100644 --- a/arch/i386/kernel/entry.S +++ b/arch/i386/kernel/entry.S @@ -457,6 +457,7 @@ work_resched: work_notifysig: # deal with pending signals and # notify-resume requests +#ifdef CONFIG_VM86 testl $VM_MASK, PT_EFLAGS(%esp) movl %esp, %eax jne work_notifysig_v86 # returning to kernel-space or @@ -467,17 +468,18 @@ work_notifysig: # deal with pending signals and ALIGN work_notifysig_v86: -#ifdef CONFIG_VM86 pushl %ecx # save ti_flags for do_notify_resume CFI_ADJUST_CFA_OFFSET 4 call save_v86_state # %eax contains pt_regs pointer popl %ecx CFI_ADJUST_CFA_OFFSET -4 movl %eax, %esp +#else + movl %esp, %eax +#endif xorl %edx, %edx call do_notify_resume jmp resume_userspace_sig -#endif # perform syscall exit tracing ALIGN |
