Konrad Rzeszutek Wilk 408fb0e5aa xen/pciback: Don't allow MSI-X ops if PCI_COMMAND_MEMORY is not set. ... commit f598282f51 ("PCI: Fix the NIU MSI-X problem in a better way") teaches us that dealing with MSI-X can be troublesome. Further checks in the MSI-X architecture shows that if the PCI_COMMAND_MEMORY bit is turned of in the PCI_COMMAND we may not be able to access the BAR (since they are memory regions). Since the MSI-X tables are located in there.. that can lead to us causing PCIe errors. Inhibit us performing any operation on the MSI-X unless the MEMORY bit is set. Note that Xen hypervisor with: "x86/MSI-X: access MSI-X table only after having enabled MSI-X" will return: xen_pciback: 0000:0a:00.1: error -6 enabling MSI-X for guest 3! When the generic MSI code tries to setup the PIRQ without MEMORY bit set. Which means with later versions of Xen (4.6) this patch is not neccessary. This is part of XSA-157 CC: stable@vger.kernel.org Reviewed-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>		2015-12-18 10:48:39 -05:00
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Makefile	xen/pciback: Have 'passthrough' option instead of XEN_PCIDEV_BACKEND_PASS and XEN_PCIDEV_BACKEND_VPCI	2011-07-19 21:04:20 -04:00
conf_space.c	xen-pciback: Add name prefix to global 'permissive' variable	2015-04-29 17:34:50 +01:00
conf_space.h	xen-pciback: Add name prefix to global 'permissive' variable	2015-04-29 17:34:50 +01:00
conf_space_capability.c	xen/pciback: Drop two backends, squash and cleanup some code.	2011-07-19 20:58:35 -04:00
conf_space_header.c	xen-pciback: Add name prefix to global 'permissive' variable	2015-04-29 17:34:50 +01:00
conf_space_quirks.c	xen/pciback: miscellaneous adjustments	2011-09-21 18:17:59 -04:00
conf_space_quirks.h	xen/pciback: Drop two backends, squash and cleanup some code.	2011-07-19 20:58:35 -04:00
passthrough.c	xen/pciback: Don't deadlock when unbinding.	2014-12-04 12:41:58 +00:00
pci_stub.c	xen/pciback: Don't print scary messages when unsupported by hypervisor.	2015-03-16 14:49:14 +00:00
pciback.h	xen/pciback: Save xen_pci_op commands before processing it	2015-12-18 10:00:47 -05:00
pciback_ops.c	xen/pciback: Don't allow MSI-X ops if PCI_COMMAND_MEMORY is not set.	2015-12-18 10:48:39 -05:00
vpci.c	xen/pciback: Don't deadlock when unbinding.	2014-12-04 12:41:58 +00:00
xenbus.c	xenbus_client: Extend interface to support multi-page ring	2015-04-15 10:56:47 +01:00