Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Date:   Tue, 17 Jul 2018 09:05:44 +0200
From:   Joerg Roedel <jroedel@suse.de>
To:     Andy Lutomirski <luto@kernel.org>
Cc:     Joerg Roedel <joro@8bytes.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@kernel.org>,
        "H . Peter Anvin" <hpa@zytor.com>, X86 ML <x86@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Linux-MM <linux-mm@kvack.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Dave Hansen <dave.hansen@intel.com>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Juergen Gross <jgross@suse.com>,
        Peter Zijlstra <peterz@infradead.org>,
        Borislav Petkov <bp@alien8.de>, Jiri Kosina <jkosina@suse.cz>,
        Boris Ostrovsky <boris.ostrovsky@oracle.com>,
        Brian Gerst <brgerst@gmail.com>,
        David Laight <David.Laight@aculab.com>,
        Denys Vlasenko <dvlasenk@redhat.com>,
        Eduardo Valentin <eduval@amazon.com>,
        Greg KH <gregkh@linuxfoundation.org>,
        Will Deacon <will.deacon@arm.com>,
        "Liguori, Anthony" <aliguori@amazon.com>,
        Daniel Gruss <daniel.gruss@iaik.tugraz.at>,
        Hugh Dickins <hughd@google.com>,
        Kees Cook <keescook@google.com>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Waiman Long <llong@redhat.com>, Pavel Machek <pavel@ucw.cz>,
        "David H . Gutteridge" <dhgutteridge@sympatico.ca>
Subject: Re: [PATCH 03/39] x86/entry/32: Load task stack from x86_tss.sp1 in
 SYSENTER handler
Message-ID: <20180717070544.xok34ro76f7m32ha@suse.de>
References: <1531308586-29340-1-git-send-email-joro@8bytes.org>
 <1531308586-29340-4-git-send-email-joro@8bytes.org>
 <823BAA9B-FACA-4E91-BE56-315FF569297C@amacapital.net>
 <20180713094849.5bsfpwhxzo5r5exk@8bytes.org>
 <CALCETrUP1QUKPLPJg6_L5=Mzmq33cSvq+NMaYW01wTCepdjCyg@mail.gmail.com>
 <CALCETrUBR-TGPY7wF4UwRb7jW39H+rJ4XFen35dgJRysk9sYTQ@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CALCETrUBR-TGPY7wF4UwRb7jW39H+rJ4XFen35dgJRysk9sYTQ@mail.gmail.com>
User-Agent: NeoMutt/20170421 (1.8.2)
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Fri, Jul 13, 2018 at 04:17:40PM -0700, Andy Lutomirski wrote:
> I re-read it again.  How about keeping TSS_entry_stack but making it
> be the offset from the TSS to the entry stack.  Then do the arithmetic
> in asm.

Hmm, I think its better to keep the arithmetic in the C file for better
readability. How about renaming it to TSS_entry2task_stack?


Regards,

	Joerg