| Date | Tue, 25 Jan 2022 13:23:10 +0100 | Subject | Re: [PATCH v2 15/30] KVM: s390: pci: do initial setup for AEN interpretation | From | Pierre Morel <> |
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On 1/14/22 21:31, Matthew Rosato wrote: > 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. > > Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> > --- > arch/s390/include/asm/pci.h | 4 + > arch/s390/include/asm/pci_insn.h | 12 +++ > arch/s390/kvm/interrupt.c | 14 +++ > arch/s390/kvm/kvm-s390.c | 9 ++ > arch/s390/kvm/pci.c | 144 +++++++++++++++++++++++++++++++ > arch/s390/kvm/pci.h | 42 +++++++++ > arch/s390/pci/pci.c | 6 ++ > 7 files changed, 231 insertions(+) > create mode 100644 arch/s390/kvm/pci.h > ...snip...
> new file mode 100644 > index 000000000000..b2000ed7b8c3 > --- /dev/null > +++ b/arch/s390/kvm/pci.h > @@ -0,0 +1,42 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * s390 kvm PCI passthrough support > + * > + * Copyright IBM Corp. 2021 > + * > + * Author(s): Matthew Rosato <mjrosato@linux.ibm.com> > + */ > + > +#ifndef __KVM_S390_PCI_H > +#define __KVM_S390_PCI_H > + > +#include <linux/pci.h> > +#include <linux/mutex.h> > +#include <asm/airq.h> > +#include <asm/kvm_pci.h> > + > +struct zpci_gaite { > + u32 gisa; > + u8 gisc; > + u8 count; > + u8 reserved; > + u8 aisbo; > + u64 aisb; > +}; > + > +struct zpci_aift { > + struct zpci_gaite *gait; > + struct airq_iv *sbv; > + struct kvm_zdev **kzdev; > + spinlock_t gait_lock; /* Protects the gait, used during AEN forward */ > + struct mutex lock; /* Protects the other structures in aift */
To facilitate review and debug, can we please rename the lock aift_lock?
> +}; > + > +extern struct zpci_aift *aift; > + ...snip...
-- Pierre Morel IBM Lab Boeblingen
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