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s390x/pci: optimize calling s390_get_phb()

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A function may recursively call device search functions or may call
serveral different device search function. Passing the S390pciState to
search functions as an argument instead of looking up it inside the
search functions lowers the number of calling s390_get_phb().

Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Yi Min Zhao 2016-11-23 11:08:29 +08:00 • committed by Cornelia Huck
parent e70377dfa4
commit a975a24aed
4 changed files with 52 additions and 50 deletions
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2
target/s390x/kvm.c
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@ -2301,7 +2301,7 @@ int kvm_arch_fixup_msi_route(struct kvm_irq_routing_entry *route,
uint32_t idx = data >> ZPCI_MSI_VEC_BITS;
uint32_t vec = data & ZPCI_MSI_VEC_MASK;
pbdev = s390_pci_find_dev_by_idx(idx);
pbdev = s390_pci_find_dev_by_idx(s390_get_phb(), idx);
if (!pbdev) {
DPRINTF("add_msi_route no dev\n");
return -ENODEV;