Messages in this thread Patch in this message | | | Date | Thu, 5 May 2016 02:37:05 -0700 | From | tip-bot for Brian Gerst <> | Subject | [tip:x86/asm] x86/entry/32: Remove GET_THREAD_INFO() from entry code |
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Commit-ID: 1e17880371f85d3d866962e04ba3567c0654a125 Gitweb: http://git.kernel.org/tip/1e17880371f85d3d866962e04ba3567c0654a125 Author: Brian Gerst <brgerst@gmail.com> AuthorDate: Wed, 4 May 2016 22:44:37 -0400 Committer: Ingo Molnar <mingo@kernel.org> CommitDate: Thu, 5 May 2016 08:37:30 +0200
x86/entry/32: Remove GET_THREAD_INFO() from entry code
The entry code used to cache the thread_info pointer in the EBP register, but all the code that used it has been moved to C. Remove the unused code to get the pointer.
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: Borislav Petkov <bp@suse.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/1462416278-11974-3-git-send-email-brgerst@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> --- arch/x86/entry/entry_32.S | 3 --- 1 file changed, 3 deletions(-)
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S index c84d99b..983e5d3 100644 --- a/arch/x86/entry/entry_32.S +++ b/arch/x86/entry/entry_32.S @@ -207,7 +207,6 @@ ENTRY(ret_from_fork) pushl %eax call schedule_tail - GET_THREAD_INFO(%ebp) popl %eax /* When we fork, we trace the syscall return in the child, too. */ @@ -219,7 +218,6 @@ END(ret_from_fork) ENTRY(ret_from_kernel_thread) pushl %eax call schedule_tail - GET_THREAD_INFO(%ebp) popl %eax movl PT_EBP(%esp), %eax call *PT_EBX(%esp) @@ -247,7 +245,6 @@ ENDPROC(ret_from_kernel_thread) ret_from_exception: preempt_stop(CLBR_ANY) ret_from_intr: - GET_THREAD_INFO(%ebp) #ifdef CONFIG_VM86 movl PT_EFLAGS(%esp), %eax # mix EFLAGS and CS movb PT_CS(%esp), %al
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