Re: [PATCH] KVM: s390: pci: Fix aisb calculation

[Christian Borntraeger]

Am 24.04.26 um 21:39 schrieb Matthew Rosato:
> The current implementation of aisb calculation will erroneously index
> via an unsigned long * as well as multiply by 8B for every 64-bits in
> the offset; only one or the other is required.  This throws off aisb
> calculations once the number of devices exceeds 64, and can result
> in out-of-bounds access as well as failure to indicate summary bits
> associated with those devices in guests.
>
> Fix this by converting to a physical address before applying the
> offset, as is already done in arch/s390/pci/pci_irq.c.
>
> Fixes: 3c5a1b6f0a18 ("KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding")
> Signed-off-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx>

thanks applied.