Messages in this thread | | | From | Andy Lutomirski <> | Date | Thu, 2 Apr 2015 12:02:16 -0700 | Subject | Re: [PATCH 9/9] x86/asm/entry/64: Remove GET_THREAD_INFO in ret_from_fork |
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On Thu, Apr 2, 2015 at 7:36 AM, Denys Vlasenko <dvlasenk@redhat.com> wrote: > It used to be used to check for _TIF_IA32, but the check has been removed. > > Remove GET_THREAD_INFO too. > > Run-tested.
Acked-by: Andy Lutomirski <luto@kernel.org>
Anyone know what the eflags reset code just above it is for? Is it because we used to allow NT in kernel eflags?
--Andy
> > Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> > CC: Linus Torvalds <torvalds@linux-foundation.org> > CC: Steven Rostedt <rostedt@goodmis.org> > CC: Ingo Molnar <mingo@kernel.org> > CC: Borislav Petkov <bp@alien8.de> > CC: "H. Peter Anvin" <hpa@zytor.com> > CC: Andy Lutomirski <luto@amacapital.net> > CC: Oleg Nesterov <oleg@redhat.com> > CC: Frederic Weisbecker <fweisbec@gmail.com> > CC: Alexei Starovoitov <ast@plumgrid.com> > CC: Will Drewry <wad@chromium.org> > CC: Kees Cook <keescook@chromium.org> > CC: x86@kernel.org > CC: linux-kernel@vger.kernel.org > --- > arch/x86/kernel/entry_64.S | 2 -- > 1 file changed, 2 deletions(-) > > diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S > index 0124f6f..7bc097a 100644 > --- a/arch/x86/kernel/entry_64.S > +++ b/arch/x86/kernel/entry_64.S > @@ -507,8 +507,6 @@ ENTRY(ret_from_fork) > > call schedule_tail # rdi: 'prev' task parameter > > - GET_THREAD_INFO(%rcx) > - > RESTORE_EXTRA_REGS > > testl $3,CS(%rsp) # from kernel_thread? > -- > 1.8.1.4 >
-- Andy Lutomirski AMA Capital Management, LLC
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