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s390x/pci: fixup trap_msix() 

The function trap_msix() is to check if pcistg instruction would access
msix table entries. The correct boundary condition should be
[table_offset, table_offset+entries*entry_size). But the current
condition calculated misses the last entry. So let's fixup it.

Acked-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Message-Id: <1503907487-2764-2-git-send-email-zyimin@linux.vnet.ibm.com>
Cc: qemu-stable@nongnu.org
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
master
Yi Min Zhao 2017-08-28 10:04:44 +02:00 committed by Cornelia Huck
parent 917726611e
commit 2f21b8d431
1 changed files with 2 additions and 2 deletions
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4
hw/s390x/s390-pci-inst.c
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@ -440,8 +440,8 @@ static int trap_msix(S390PCIBusDevice *pbdev, uint64_t offset, uint8_t pcias)
{
if (pbdev->msix.available && pbdev->msix.table_bar == pcias &&
offset >= pbdev->msix.table_offset &&
offset <= pbdev->msix.table_offset +
(pbdev->msix.entries - 1) * PCI_MSIX_ENTRY_SIZE) {
offset < (pbdev->msix.table_offset +
pbdev->msix.entries * PCI_MSIX_ENTRY_SIZE)) {
return 1;
} else {
return 0;