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s390/pci: track whether util_str is valid in the zpci_dev

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We'll need to keep track of whether or not the byte string in util_str is
valid and thus needs to be passed to a vfio-pci passthrough device.

Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Acked-by: Niklas Schnelle <schnelle@linux.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Matthew Rosato 2020-10-07 14:56:21 -04:00 committed by Alex Williamson
parent dc8c638d9e
commit 517fe29824
2 changed files with 3 additions and 1 deletions
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3
arch/s390/include/asm/pci.h
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@ -132,7 +132,8 @@ struct zpci_dev {
u8 rid_available : 1;
u8 has_hp_slot : 1;
u8 is_physfn : 1;
u8 reserved : 5;
u8 util_str_avail : 1;
u8 reserved : 4;
unsigned int devfn; /* DEVFN part of the RID*/
struct mutex lock;

1
arch/s390/pci/pci_clp.c
View File

@ -168,6 +168,7 @@ static int clp_store_query_pci_fn(struct zpci_dev *zdev,
if (response->util_str_avail) {
memcpy(zdev->util_str, response->util_str,
sizeof(zdev->util_str));
zdev->util_str_avail = 1;
}
zdev->mio_capable = response->mio_addr_avail;
for (i = 0; i < PCI_STD_NUM_BARS; i++) {