diff options
| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2020-10-26 11:34:35 -0400 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2020-11-01 12:30:52 -0700 |
| commit | 37fa32de707340f3a93959ad5a1ebc41ba1520ee (patch) | |
| tree | 2c7beddea849c67a0f1565f865c03fe1a55542a4 /include/hw/s390x/s390-pci-inst.h | |
| parent | cd7498d07fbb20fa04790ff7ee168a8a8d01cb30 (diff) | |
s390x/pci: Honor DMA limits set by vfio
When an s390 guest is using lazy unmapping, it can result in a very
large number of oustanding DMA requests, far beyond the default
limit configured for vfio. Let's track DMA usage similar to vfio
in the host, and trigger the guest to flush their DMA mappings
before vfio runs out.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
[aw: non-Linux build fixes]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/hw/s390x/s390-pci-inst.h')
| -rw-r--r-- | include/hw/s390x/s390-pci-inst.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/hw/s390x/s390-pci-inst.h b/include/hw/s390x/s390-pci-inst.h index fa3bf8b5aa..8ee3a3c237 100644 --- a/include/hw/s390x/s390-pci-inst.h +++ b/include/hw/s390x/s390-pci-inst.h @@ -254,6 +254,9 @@ typedef struct ClpReqRspQueryPciGrp { #define ZPCI_STPCIFC_ST_INVAL_DMAAS 28 #define ZPCI_STPCIFC_ST_ERROR_RECOVER 40 +/* Refresh PCI Translations status codes */ +#define ZPCI_RPCIT_ST_INSUFF_RES 16 + /* FIB function controls */ #define ZPCI_FIB_FC_ENABLED 0x80 #define ZPCI_FIB_FC_ERROR 0x40 |