From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54406) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bFPBN-00048I-1z for qemu-devel@nongnu.org; Tue, 21 Jun 2016 13:09:49 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bFPBL-00046m-3M for qemu-devel@nongnu.org; Tue, 21 Jun 2016 13:09:47 -0400 From: Peter Maydell Date: Tue, 21 Jun 2016 18:09:34 +0100 Message-Id: <1466528974-12183-7-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1466528974-12183-1-git-send-email-peter.maydell@linaro.org> References: <1466528974-12183-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH v2 6/6] hw/arm/virt: Set minimum_page_bits to 12 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: patches@linaro.org, Vijaya Kumar K , Paolo Bonzini Since the virt board model will never create a CPU which is pre-ARMv7, we know that our minimum page size is 4K and can set minimum_page_bits accordingly, for improved performance. Note that this is a migration compatibility break. Signed-off-by: Peter Maydell --- hw/arm/virt.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index c5c125e..f9b51aa 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1440,6 +1440,8 @@ static void virt_machine_class_init(ObjectClass *oc, void *data) mc->block_default_type = IF_VIRTIO; mc->no_cdrom = 1; mc->pci_allow_0_address = true; + /* We know we will never create a pre-ARMv7 CPU which needs 1K pages */ + mc->minimum_page_bits = 12; } static const TypeInfo virt_machine_info = { -- 1.9.1