From cdd85eb2804018ab46a742ebf64dc5366b9fae73 Mon Sep 17 00:00:00 2001 From: Yi Min Zhao Date: Fri, 6 May 2016 18:44:40 +0800 Subject: [PATCH] s390x/pci: replace fid with idx in msg data of msix Present code uses fid as the part of message data of msix for looking up the specific zpci device. However it limits the usable range of fid, and the code looking up the zpci device may fail due to truncation of the fid. In addition, fh is composed of enabled bit, FH_VIRT and the array index. So we can use the array index as the identifier to store in msg data. Signed-off-by: Yi Min Zhao Reviewed-by: Pierre Morel Signed-off-by: Cornelia Huck --- hw/s390x/s390-pci-bus.c | 8 ++++---- hw/s390x/s390-pci-inst.c | 3 ++- target-s390x/kvm.c | 4 ++-- 3 files changed, 8 insertions(+), 7 deletions(-) diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c index f930b04e99..630a826202 100644 --- a/hw/s390x/s390-pci-bus.c +++ b/hw/s390x/s390-pci-bus.c @@ -474,18 +474,18 @@ static void s390_msi_ctrl_write(void *opaque, hwaddr addr, uint64_t data, { S390PCIBusDevice *pbdev; uint32_t io_int_word; - uint32_t fid = data >> ZPCI_MSI_VEC_BITS; + uint32_t idx = data >> ZPCI_MSI_VEC_BITS; uint32_t vec = data & ZPCI_MSI_VEC_MASK; uint64_t ind_bit; uint32_t sum_bit; uint32_t e = 0; - DPRINTF("write_msix data 0x%" PRIx64 " fid %d vec 0x%x\n", data, fid, vec); + DPRINTF("write_msix data 0x%" PRIx64 " idx %d vec 0x%x\n", data, idx, vec); - pbdev = s390_pci_find_dev_by_fid(fid); + pbdev = s390_pci_find_dev_by_idx(idx); if (!pbdev) { e |= (vec << ERR_EVENT_MVN_OFFSET); - s390_pci_generate_error_event(ERR_EVENT_NOMSI, 0, fid, addr, e); + s390_pci_generate_error_event(ERR_EVENT_NOMSI, idx, 0, addr, e); return; } diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c index 37572df821..331bc4cfde 100644 --- a/hw/s390x/s390-pci-inst.c +++ b/hw/s390x/s390-pci-inst.c @@ -419,7 +419,8 @@ static void update_msix_table_msg_data(S390PCIBusDevice *pbdev, uint64_t offset, msg_data = (uint8_t *)data - offset % PCI_MSIX_ENTRY_SIZE + PCI_MSIX_ENTRY_VECTOR_CTRL; - val = pci_get_long(msg_data) | (pbdev->fid << ZPCI_MSI_VEC_BITS); + val = pci_get_long(msg_data) | + ((pbdev->fh & FH_MASK_INDEX) << ZPCI_MSI_VEC_BITS); pci_set_long(msg_data, val); DPRINTF("update msix msg_data to 0x%" PRIx64 "\n", *data); } diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 45e94ca48a..2991bff6a4 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -2246,10 +2246,10 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route, uint64_t address, uint32_t data, PCIDevice *dev) { S390PCIBusDevice *pbdev; - uint32_t fid = data >> ZPCI_MSI_VEC_BITS; + uint32_t idx = data >> ZPCI_MSI_VEC_BITS; uint32_t vec = data & ZPCI_MSI_VEC_MASK; - pbdev = s390_pci_find_dev_by_fid(fid); + pbdev = s390_pci_find_dev_by_idx(idx); if (!pbdev) { DPRINTF("add_msi_route no dev\n"); return -ENODEV;