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From: Sheng Yang <sheng@linux.intel.com>
To: Avi Kivity <avi@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>
Cc: kvm@vger.kernel.org, Sheng Yang <sheng@linux.intel.com>
Subject: [PATCH] qemu-kvm: device assignment: Reflect assigned device's MSI data/address modification to KVM
Date: Tue, 28 Sep 2010 16:34:51 +0800	[thread overview]
Message-ID: <1285662891-23667-1-git-send-email-sheng@linux.intel.com> (raw)

Device driver can modify MSI data/address when MSI is enabled. This patch
reflect the moditication to KVM.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
---
 hw/device-assignment.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/hw/device-assignment.c b/hw/device-assignment.c
index 87f7418..1e83495 100644
--- a/hw/device-assignment.c
+++ b/hw/device-assignment.c
@@ -1283,7 +1283,8 @@ static void assigned_device_pci_cap_write_config(PCIDevice *pci_dev, uint32_t ad
 #ifdef KVM_CAP_DEVICE_MSI
     if (assigned_dev->cap.available & ASSIGNED_DEVICE_CAP_MSI) {
         ctrl_pos = pos + PCI_MSI_FLAGS;
-        if (address <= ctrl_pos && address + len > ctrl_pos)
+        /* Cover control, MSI data/addr fields */
+        if (pos <= address && address + len < pos + PCI_MSI_DATA_32 + 2)
             assigned_dev_update_msi(pci_dev, ctrl_pos);
         pos += PCI_CAPABILITY_CONFIG_MSI_LENGTH;
     }
-- 
1.7.0.1


             reply	other threads:[~2010-09-28  8:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-28  8:34 Sheng Yang [this message]
2010-09-30  2:05 ` [PATCH] qemu-kvm: device assignment: Reflect assigned device's MSI data/address modification to KVM Marcelo Tosatti

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