From 89df4609568433f67999c27f9b9cd12e91a7d0b5 Mon Sep 17 00:00:00 2001 From: Jason Baron Date: Tue, 4 Sep 2012 16:22:46 -0400 Subject: [PATCH] pcie_aer: clear cmask for Advanced Error Interrupt Message Number The Advanced Error Interrupt Message Number (bits 31:27 of the Root Error Status Register) is updated when the number of msi messages assigned to a device changes. Migration of windows 7 on q35 chipset failed because the check in get_pci_config_device() fails due to cmask being set on these bits. Its valid to update these bits and we must restore this state across migration. Signed-off-by: Jason Baron Signed-off-by: Michael S. Tsirkin (cherry picked from commit 0e180d9c8a7429c55d23d2e7855f1e490a063aaa) Signed-off-by: Michael Roth --- hw/pcie_aer.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/pcie_aer.c b/hw/pcie_aer.c index 3b6981c..b04c164 100644 --- a/hw/pcie_aer.c +++ b/hw/pcie_aer.c @@ -738,6 +738,11 @@ void pcie_aer_root_init(PCIDevice *dev) PCI_ERR_ROOT_CMD_EN_MASK); pci_set_long(dev->w1cmask + pos + PCI_ERR_ROOT_STATUS, PCI_ERR_ROOT_STATUS_REPORT_MASK); + /* PCI_ERR_ROOT_IRQ is RO but devices change it using a + * device-specific method. + */ + pci_set_long(dev->cmask + pos + PCI_ERR_ROOT_STATUS, + ~PCI_ERR_ROOT_IRQ); } void pcie_aer_root_reset(PCIDevice *dev) -- 1.7.12.1