From 4e4dc65ab578c962ea898d475c0418ea29cc6b2f Mon Sep 17 00:00:00 2001 From: Niklas Schnelle Date: Thu, 25 Nov 2021 16:42:22 +0100 Subject: [PATCH] s390/pci: use phys_to_virt() for AIBVs/DIBVs The adapter and directed interrupt bit vectors need to be referenced in the FIB with their physical not their virtual address. So use virt_to_phys() as approrpiate. Note: this currently doesn't fix a real bug, since virtual addresses are indentical to physical ones. Reviewed-by: Pierre Morel Signed-off-by: Niklas Schnelle Signed-off-by: Heiko Carstens --- arch/s390/pci/pci_irq.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/s390/pci/pci_irq.c b/arch/s390/pci/pci_irq.c index 954bb7a..aefd306 100644 --- a/arch/s390/pci/pci_irq.c +++ b/arch/s390/pci/pci_irq.c @@ -45,9 +45,9 @@ static int zpci_set_airq(struct zpci_dev *zdev) fib.fmt0.isc = PCI_ISC; fib.fmt0.sum = 1; /* enable summary notifications */ fib.fmt0.noi = airq_iv_end(zdev->aibv); - fib.fmt0.aibv = (unsigned long) zdev->aibv->vector; + fib.fmt0.aibv = virt_to_phys(zdev->aibv->vector); fib.fmt0.aibvo = 0; /* each zdev has its own interrupt vector */ - fib.fmt0.aisb = (unsigned long) zpci_sbv->vector + (zdev->aisb/64)*8; + fib.fmt0.aisb = virt_to_phys(zpci_sbv->vector) + (zdev->aisb / 64) * 8; fib.fmt0.aisbo = zdev->aisb & 63; return zpci_mod_fc(req, &fib, &status) ? -EIO : 0; @@ -422,7 +422,7 @@ static int __init zpci_directed_irq_init(void) iib.diib.isc = PCI_ISC; iib.diib.nr_cpus = num_possible_cpus(); - iib.diib.disb_addr = (u64) zpci_sbv->vector; + iib.diib.disb_addr = virt_to_phys(zpci_sbv->vector); __zpci_set_irq_ctrl(SIC_IRQ_MODE_DIRECT, 0, &iib); zpci_ibv = kcalloc(num_possible_cpus(), sizeof(*zpci_ibv), -- 2.7.4