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Subject: Re: [PATCH 01/39] x86/asm-offsets: Move TSS_sp0 and TSS_sp1 to asm-offsets.c
From:   Andy Lutomirski <luto@amacapital.net>
In-Reply-To: <1531308586-29340-2-git-send-email-joro@8bytes.org>
Date:   Thu, 12 Jul 2018 13:44:49 -0700
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@kernel.org>,
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        linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Andy Lutomirski <luto@kernel.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>, aliguori@amazon.com,
        daniel.gruss@iaik.tugraz.at, hughd@google.com, keescook@google.com,
        Andrea Arcangeli <aarcange@redhat.com>,
        Waiman Long <llong@redhat.com>, Pavel Machek <pavel@ucw.cz>,
        "David H . Gutteridge" <dhgutteridge@sympatico.ca>, jroedel@suse.de
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To:     Joerg Roedel <joro@8bytes.org>
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> On Jul 11, 2018, at 4:29 AM, Joerg Roedel <joro@8bytes.org> wrote:
>=20
> From: Joerg Roedel <jroedel@suse.de>
>=20
> These offsets will be used in 32 bit assembly code as well,
> so make them available for all of x86 code.

Reviewed-by: Andy Lutomirski <luto@kernel.org>

>=20
> Signed-off-by: Joerg Roedel <jroedel@suse.de>
> ---
> arch/x86/kernel/asm-offsets.c    | 4 ++++
> arch/x86/kernel/asm-offsets_64.c | 2 --
> 2 files changed, 4 insertions(+), 2 deletions(-)
>=20
> diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c=

> index dcb008c..a1e1628 100644
> --- a/arch/x86/kernel/asm-offsets.c
> +++ b/arch/x86/kernel/asm-offsets.c
> @@ -103,4 +103,8 @@ void common(void) {
>    OFFSET(CPU_ENTRY_AREA_entry_trampoline, cpu_entry_area, entry_trampolin=
e);
>    OFFSET(CPU_ENTRY_AREA_entry_stack, cpu_entry_area, entry_stack_page);
>    DEFINE(SIZEOF_entry_stack, sizeof(struct entry_stack));
> +
> +    /* Offset for sp0 and sp1 into the tss_struct */
> +    OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);
> +    OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);
> }
> diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offset=
s_64.c
> index b2dcd16..3b9405e 100644
> --- a/arch/x86/kernel/asm-offsets_64.c
> +++ b/arch/x86/kernel/asm-offsets_64.c
> @@ -65,8 +65,6 @@ int main(void)
> #undef ENTRY
>=20
>    OFFSET(TSS_ist, tss_struct, x86_tss.ist);
> -    OFFSET(TSS_sp0, tss_struct, x86_tss.sp0);
> -    OFFSET(TSS_sp1, tss_struct, x86_tss.sp1);
>    BLANK();
>=20
> #ifdef CONFIG_STACKPROTECTOR
> --=20
> 2.7.4
>=20