From c9af51eb96319f8248ababea592282bc6215fc30 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Mon, 7 Jan 2013 12:56:52 +0100 Subject: [PATCH] VT-d: relax source qualifier for MSI of phantom functions With ordinary requests allowed to come from phantom functions, the remapping tables ought to be set up to allow for MSI triggers to come from other than the "real" device too. Signed-off-by: Jan Beulich Acked-by: "Zhang, Xiantao" --- xen/drivers/passthrough/vtd/intremap.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/xen/drivers/passthrough/vtd/intremap.c b/xen/drivers/passthrough/vtd/intremap.c index aaf9301896..8b45e5ae8b 100644 --- a/xen/drivers/passthrough/vtd/intremap.c +++ b/xen/drivers/passthrough/vtd/intremap.c @@ -442,13 +442,22 @@ static void set_msi_source_id(struct pci_dev *pdev, struct iremap_entry *ire) devfn = pdev->devfn; switch ( pdev->type ) { + unsigned int sq; + case DEV_TYPE_PCIe_BRIDGE: case DEV_TYPE_PCIe2PCI_BRIDGE: case DEV_TYPE_LEGACY_PCI_BRIDGE: break; case DEV_TYPE_PCIe_ENDPOINT: - set_ire_sid(ire, SVT_VERIFY_SID_SQ, SQ_ALL_16, PCI_BDF2(bus, devfn)); + switch ( pdev->phantom_stride ) + { + case 1: sq = SQ_13_IGNORE_3; break; + case 2: sq = SQ_13_IGNORE_2; break; + case 4: sq = SQ_13_IGNORE_1; break; + default: sq = SQ_ALL_16; break; + } + set_ire_sid(ire, SVT_VERIFY_SID_SQ, sq, PCI_BDF2(bus, devfn)); break; case DEV_TYPE_PCI: -- 2.30.2