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| author | Matthew Rosato <mjrosato@linux.ibm.com> | 2022-06-06 16:33:16 -0400 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@linux.ibm.com> | 2022-07-11 09:54:28 +0200 |
| commit | 98b1d33dac5fd09060486762c02fd1a78baeb1e0 (patch) | |
| tree | d497644d8dd17f4d2d4681f109c3d8da434a9b8f /arch/s390/kvm/interrupt.c | |
| parent | 6438e30714abd1bf7408356d3e86127d1fb379c0 (diff) | |
| download | linux-98b1d33dac5fd09060486762c02fd1a78baeb1e0.tar.gz linux-98b1d33dac5fd09060486762c02fd1a78baeb1e0.tar.bz2 linux-98b1d33dac5fd09060486762c02fd1a78baeb1e0.zip | |
KVM: s390: pci: do initial setup for AEN interpretation
Initial setup for Adapter Event Notification Interpretation for zPCI
passthrough devices. Specifically, allocate a structure for forwarding of
adapter events and pass the address of this structure to firmware.
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Link: https://lore.kernel.org/r/20220606203325.110625-13-mjrosato@linux.ibm.com
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Diffstat (limited to 'arch/s390/kvm/interrupt.c')
| -rw-r--r-- | arch/s390/kvm/interrupt.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 17ff475157d8..37ff4358121a 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -32,6 +32,7 @@ #include "kvm-s390.h" #include "gaccess.h" #include "trace-s390.h" +#include "pci.h" #define PFAULT_INIT 0x0600 #define PFAULT_DONE 0x0680 @@ -3328,6 +3329,11 @@ void kvm_s390_gib_destroy(void) { if (!gib) return; + if (kvm_s390_pci_interp_allowed() && aift) { + mutex_lock(&aift->aift_lock); + kvm_s390_pci_aen_exit(); + mutex_unlock(&aift->aift_lock); + } chsc_sgib(0); unregister_adapter_interrupt(&gib_alert_irq); free_page((unsigned long)gib); @@ -3365,6 +3371,14 @@ int kvm_s390_gib_init(u8 nisc) goto out_unreg_gal; } + if (kvm_s390_pci_interp_allowed()) { + if (kvm_s390_pci_aen_init(nisc)) { + pr_err("Initializing AEN for PCI failed\n"); + rc = -EIO; + goto out_unreg_gal; + } + } + KVM_EVENT(3, "gib 0x%pK (nisc=%d) initialized", gib, gib->nisc); goto out; |