From 7611dae8a69f0f1775ba1a9a942961c2aa10d88e Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Tue, 2 Jun 2015 15:07:00 +0000 Subject: xen: don't allow guest to control MSI mask register It's being used by the hypervisor. For now simply mimic a device not capable of masking, and fully emulate any accesses a guest may issue nevertheless as simple reads/writes without side effects. This is XSA-129. Signed-off-by: Jan Beulich Reviewed-by: Stefano Stabellini --- include/hw/pci/pci_regs.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/hw/pci/pci_regs.h b/include/hw/pci/pci_regs.h index 56a404b..57e8c80 100644 --- a/include/hw/pci/pci_regs.h +++ b/include/hw/pci/pci_regs.h @@ -298,8 +298,10 @@ #define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */ #define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */ #define PCI_MSI_MASK_32 12 /* Mask bits register for 32-bit devices */ +#define PCI_MSI_PENDING_32 16 /* Pending bits register for 32-bit devices */ #define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */ #define PCI_MSI_MASK_64 16 /* Mask bits register for 64-bit devices */ +#define PCI_MSI_PENDING_64 20 /* Pending bits register for 32-bit devices */ /* MSI-X registers */ #define PCI_MSIX_FLAGS 2 -- cgit v1.1