linux-kernel - Re: [Linux v5.11-rc7] x86: entry: Leftover of _TIF

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Message-ID: <CA+icZUWbN3WaD-UyVB4yswi5f-kEcG+Zci4giR_ku+k+da2WFA@mail.gmail.com>
Date:   Mon, 8 Feb 2021 03:18:28 +0100
From:   Sedat Dilek <sedat.dilek@...il.com>
To:     Bhaskar Chowdhury <unixbhaskar@...il.com>,
        Sedat Dilek <sedat.dilek@...il.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Gabriel Krisman Bertazi <krisman@...labora.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kyle Huey <me@...ehuey.com>, linux-kernel@...r.kernel.org
Subject: Re: [Linux v5.11-rc7] x86: entry: Leftover of _TIF_SINGLESTEP define?

On Mon, Feb 8, 2021 at 12:27 AM Bhaskar Chowdhury <unixbhaskar@...il.com> wrote:
>
> On 00:08 Mon 08 Feb 2021, Sedat Dilek wrote:
> >Hi,
> >
> >congrats to Linux v5.11-rc7.
> >
> >after commit 6342adcaa683 ("entry: Ensure trap after single-step on
> >system call return"):
> >
> >$ git grep '\_TIF_SINGLESTEP' arch/x86/
> >arch/x86/include/asm/thread_info.h:#define _TIF_SINGLESTEP
> > (1 << TIF_SINGLESTEP)
> >
> Does it failed the build???
>
> Just curious??
>

No, it is simply a leftover.
Kyle confirmed.

I was able to build and boot into bare metal.


- Sedat -

> >Is this a leftover and can be removed (now)?
> >
> >Thanks.
> >
> >Regards,
> >- Sedat -
> >
> >[1] https://marc.info/?l=linux-kernel&m=161273724611262&w=2
> >[2] https://git.kernel.org/linus/6342adcaa683