From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54081) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZZ9Ug-0002P4-3g for qemu-devel@nongnu.org; Mon, 07 Sep 2015 23:22:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZZ9Uc-00009T-PV for qemu-devel@nongnu.org; Mon, 07 Sep 2015 23:22:50 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:59025) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZZ9Ub-00006M-Cq for qemu-devel@nongnu.org; Mon, 07 Sep 2015 23:22:46 -0400 Message-ID: <55EE5383.40008@huawei.com> Date: Tue, 8 Sep 2015 11:18:27 +0800 From: Shannon Zhao MIME-Version: 1.0 References: <1441635826-4866-1-git-send-email-leif.lindholm@linaro.org> In-Reply-To: <1441635826-4866-1-git-send-email-leif.lindholm@linaro.org> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 0/2] ACPI/arm-virt: add DBG2 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Leif Lindholm , qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, drjones@redhat.com, shannon.zhao@linaro.org, al.stone@linaro.org On 2015/9/7 22:23, Leif Lindholm wrote: > The Debug Port Table 2 (DBG2) is mandated by the ARM Server Base Boot > Requirements specification. Add the DBG2 table definitions, and set up > an entry in the ARM virt machine for the pl011 UART. > Looking at Documentation/arm64/acpi_object_usage.txt in Linux kernel, it says " DBG2 Signature Reserved (signature == "DBG2") == DeBuG port table 2 == Microsoft only table, will not be supported. " It seems that Linux kernel doesn't support or need it, but Windows requires it. So does it need to test this on Windows? > Leif Lindholm (2): > ACPI: Add definitions for the DBG2 table > hw/arm/virt-acpi-build: Add DBG2 table > > hw/arm/virt-acpi-build.c | 37 ++++++++++++++++++++++++++++++++++++- > include/hw/acpi/acpi-defs.h | 37 +++++++++++++++++++++++++++++++++++-- > 2 files changed, 71 insertions(+), 3 deletions(-) > -- Shannon