From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49051) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WQOVE-0004pC-JC for qemu-devel@nongnu.org; Wed, 19 Mar 2014 17:58:31 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WQOV3-0006HP-Us for qemu-devel@nongnu.org; Wed, 19 Mar 2014 17:58:24 -0400 Received: from cantor2.suse.de ([195.135.220.15]:58674 helo=mx2.suse.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WQOV3-0006H5-Ng for qemu-devel@nongnu.org; Wed, 19 Mar 2014 17:58:13 -0400 Message-ID: <532A12F3.5000708@suse.de> Date: Wed, 19 Mar 2014 22:58:11 +0100 From: =?ISO-8859-1?Q?Andreas_F=E4rber?= MIME-Version: 1.0 References: <20140319170353.4428b501@redhat.com> In-Reply-To: <20140319170353.4428b501@redhat.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [PATCH v2 for-2.0] target-i386: x86_cpu_get_phys_page_debug(): support 1GB page translation List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Luiz Capitulino , qemu-devel Cc: peter.maydell@linaro.org, pbonzini@redhat.com, jan.kiszka@siemens.com Am 19.03.2014 22:03, schrieb Luiz Capitulino: > Linux guests, when using more than 4GB of RAM, may end up using 1GB pag= es > to store (kernel) data. When this happens, we're unable to debug a runn= ing > Linux kernel with GDB: >=20 > (gdb) p node_data[0]->node_id > Cannot access memory at address 0xffff88013fffd3a0 > (gdb) >=20 > GDB returns this error because x86_cpu_get_phys_page_debug() doesn't su= pport > translating 1GB pages in IA-32e paging mode and returns an error to GDB= . >=20 > This commit adds support for 1GB page translation for IA32e paging. >=20 > Signed-off-by: Luiz capitulino Capitulino? :) > --- >=20 > - I'm proposing this patch for 2.0 because GDB debugging of large Linux > guests is kind of broken Agree that it would be nice to fix, but having mainly touched the function interface, I am dependent on reviewers here. =3D> rc2 or .1 Regards, Andreas >=20 > - Changelog v2: > - Move PS bit handling to if (env->hflags & HF_LMA_MASK) block > - Update changelog >=20 > target-i386/helper.c | 9 +++++++++ > 1 file changed, 9 insertions(+) --=20 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=FCrnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imend=F6rffer; HRB 16746 AG N=FCrnbe= rg