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From: | Marcel Apfelbaum |
Subject: | Re: [Qemu-devel] [PATCH 2/2] hw/pcie: disable IO port fwd by default for pcie-root-port |
Date: | Fri, 8 Sep 2017 14:39:04 +0300 |
User-agent: | Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 |
On 06/09/2017 17:49, Eduardo Habkost wrote:
On Wed, Sep 06, 2017 at 05:26:58PM +0300, Marcel Apfelbaum wrote:For most cases the devices attached to PCIe Root Ports do not need IO ports range, add an 'enable-io-fwd' property making it false by default, but keeping it true for older machines. Signed-off-by: Marcel Apfelbaum <address@hidden>[...]@@ -78,6 +111,7 @@ static const VMStateDescription vmstate_rp_dev = {static Property gen_rp_props[] = {DEFINE_PROP_BOOL("x-migrate-msix", GenPCIERootPort, migrate_msix, true), + DEFINE_PROP_BOOL("enable-io-fwd", GenPCIERootPort, enable_io_fwd, false),
Hi Eduardo,
There's no "x-" prefix, so I guess we really need to let the user or management software to set enable-io-fwd=on explicitly on some cases?
Definitely. Specifically 2 cases: - attach PCIe-PCI bridge to start a legacy PCI hierarchy. - assign a device requiring IO ports range. Thanks, Marcel
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