From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: [RFC v1 0/8] x86/init: Linux linker tables Date: Fri, 22 Jan 2016 11:06:24 -0800 Message-ID: <56A27DB0.4090706@zytor.com> References: <1450217797-19295-1-git-send-email-mcgrof@do-not-panic.com> <56731D32.4040900@zytor.com> <20151217234625.GM20409@wotan.suse.de> <56738AAF.2080601@zytor.com> <56738E29.3070605@zytor.com> <56A13D42.7040500@zytor.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Michael Matz Cc: "Luis R. Rodriguez" , "Luis R. Rodriguez" , tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, konrad.wilk@oracle.com, rusty@rustcorp.com.au, luto@amacapital.net, boris.ostrovsky@oracle.com, mcb30@ipxe.org, jgross@suse.com, JBeulich@suse.com, joro@8bytes.org, ryabinin.a.a@gmail.com, andreyknvl@google.com, long.wanglong@huawei.com, qiuxishi@huawei.com, aryabinin@virtuozzo.com, mchehab@osg.samsung.com, valentinrothberg@gmail.com, peter.senna@gmail.com, x86@kernel.org, Michal Marek , xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org List-Id: xen-devel@lists.xenproject.org On 01/22/2016 05:44 AM, Michael Matz wrote: > Hi, > > On Thu, 21 Jan 2016, H. Peter Anvin wrote: > >> Something that confuses me is that gcc seems to give these sections the >> "aw" attributes which makes as complain. This might be a gcc bug. > > Workaround: use an (possibly empty) intializer: > > struct foo {int i;}; > const struct foo > __attribute__((used,section(".rodata.tbl.tablename.0"))) tablename[0] = {}; > And indeed that works. Awesome! Much better than having to do an assembly hack. -hpa