linux-kernel - Re: [PATCH 00/16] Entry stuff, in decent shape now

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Message-ID: <CALCETrXyJw55+NE8se8ed=KSntF9nwrxst-kzLm3Xzs314QVzg@mail.gmail.com>
Date:   Mon, 20 Nov 2017 10:48:49 -0800
From:   Andy Lutomirski <luto@...nel.org>
To:     Andy Lutomirski <luto@...nel.org>
Cc:     X86 ML <x86@...nel.org>, Borislav Petkov <bpetkov@...e.de>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Brian Gerst <brgerst@...il.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: Re: [PATCH 00/16] Entry stuff, in decent shape now

On Mon, Nov 20, 2017 at 9:07 AM, Andy Lutomirski <luto@...nel.org> wrote:
> This sets up stack switching, including for SYSCALL.  I think it's
> in decent shape.

>
>  - 32-bit kernels are failing the sigreturn_32 test.  But they're also
>    failing without the patches, so I'm not sure this is a bug in the
>    series per se.  Needs further investigation.  (Off the top of my head,
>    this could be further fallout from Thomas's IDT rework.)

Hmm, I lied.  They *were* failing, but it was fixed by:

commit d0cd64b02aa854d68ce517cb7da1fe4e4fff2653
Author: Yonghong Song <yhs@...com>
Date:   Wed Nov 8 11:28:45 2017 -0800

    x86/idt: Remove X86_TRAP_BP initialization in idt_setup_traps()

so never mind.

I'd love to get the x86 selftests added to 0day's pile.