From: "H. Peter Anvin" <hpa@zytor.com>
To: Petr Tesarik <ptesarik@suse.cz>
Cc: Sam Ravnborg <sam@ravnborg.org>,
LKML <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Andi Kleen <andi@firstfloor.org>,
Roland McGrath <roland@redhat.com>
Subject: Re: [PATCH v2 0/8] clean up vdso-layout.lds.S
Date: Mon, 15 Jun 2009 11:33:28 -0700 [thread overview]
Message-ID: <4A3693F8.6000209@zytor.com> (raw)
In-Reply-To: <1245087957.17481.124.camel@nathan.suse.cz>
Petr Tesarik wrote:
>>>
>> *(COMMON) is BSS, not data...
>
> Very true, but for the vDSO we decided to put both writeable and
> read-only data into one section (called .data for that matter), probably
> to reduce the number of sections and hence also the size of the
> resulting binary.
>
BSS is neither, but I guess for the vDSO there really isn't any such
thing as uninitialized content.
I have to admit feeling funny about that, and I'm wondering if we
shouldn't compile the vDSO with -fno-common.
-hpa
next prev parent reply other threads:[~2009-06-15 18:34 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-12 13:40 [PATCH v2 0/8] clean up vdso-layout.lds.S Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 1/8] x86: Adjust the coding style of vdso-layout.lds.S Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 2/8] x86: Remove .sdata from the vDSO linker script Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 3/8] x86: Remove .dynbss " Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 4/8] x86: add .broken section to " Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 5/8] x86: mark altinstr-related sections in vDSO as broken Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 6/8] x86: mark some standard sections as broken in a vDSO Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 7/8] x86: check the size of GOT in vDSO Petr Tesarik
2009-06-12 13:40 ` [PATCH v2 8/8] x86: remove unneeded section from the vDSO Petr Tesarik
2009-06-12 18:06 ` [PATCH v2 0/8] clean up vdso-layout.lds.S Sam Ravnborg
2009-06-15 15:16 ` Petr Tesarik
2009-06-15 15:27 ` Petr Tesarik
2009-06-15 16:51 ` H. Peter Anvin
2009-06-15 17:45 ` Petr Tesarik
2009-06-15 18:33 ` H. Peter Anvin [this message]
2009-06-16 7:53 ` Petr Tesarik
2009-06-16 10:12 ` Petr Tesarik
2009-06-16 10:22 ` Roland McGrath
2009-06-16 8:40 ` Roland McGrath
2009-06-16 9:55 ` Petr Tesarik
2009-06-16 10:34 ` Roland McGrath
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