diff options
| author | Nicolin Chen <nicolinc@nvidia.com> | 2022-07-23 04:02:49 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2022-07-23 15:29:10 +0200 |
| commit | 10e19d492a326afe7f016a8735ccdfd7c65fc979 (patch) | |
| tree | 582d90232c98f7c826a8eb0a6f303099c46524e6 | |
| parent | drm/i915/gvt: Replace roundup with DIV_ROUND_UP (diff) | |
| download | linux-10e19d492a326afe7f016a8735ccdfd7c65fc979.tar.xz linux-10e19d492a326afe7f016a8735ccdfd7c65fc979.zip | |
vfio/ap: Pass in physical address of ind to ap_aqic()
The ap_aqic() is called by vfio_ap_irq_enable() where it passes in a
virt value that's casted from a physical address "h_nib". Inside the
ap_aqic(), it does virt_to_phys() again.
Since ap_aqic() needs a physical address, let's just pass in a pa of
ind directly. So change the "ind" to "pa_ind".
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/20220723020256.30081-4-nicolinc@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
| -rw-r--r-- | arch/s390/include/asm/ap.h | 6 | ||||
| -rw-r--r-- | drivers/s390/crypto/ap_queue.c | 2 | ||||
| -rw-r--r-- | drivers/s390/crypto/vfio_ap_ops.c | 7 |
3 files changed, 8 insertions, 7 deletions
diff --git a/arch/s390/include/asm/ap.h b/arch/s390/include/asm/ap.h index b515cfa62bd9..f508f5025e38 100644 --- a/arch/s390/include/asm/ap.h +++ b/arch/s390/include/asm/ap.h @@ -227,13 +227,13 @@ struct ap_qirq_ctrl { * ap_aqic(): Control interruption for a specific AP. * @qid: The AP queue number * @qirqctrl: struct ap_qirq_ctrl (64 bit value) - * @ind: The notification indicator byte + * @pa_ind: Physical address of the notification indicator byte * * Returns AP queue status. */ static inline struct ap_queue_status ap_aqic(ap_qid_t qid, struct ap_qirq_ctrl qirqctrl, - void *ind) + phys_addr_t pa_ind) { unsigned long reg0 = qid | (3UL << 24); /* fc 3UL is AQIC */ union { @@ -241,7 +241,7 @@ static inline struct ap_queue_status ap_aqic(ap_qid_t qid, struct ap_qirq_ctrl qirqctrl; struct ap_queue_status status; } reg1; - unsigned long reg2 = virt_to_phys(ind); + unsigned long reg2 = pa_ind; reg1.qirqctrl = qirqctrl; diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index c48b0db824e3..a32457b4cbb8 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -34,7 +34,7 @@ static int ap_queue_enable_irq(struct ap_queue *aq, void *ind) qirqctrl.ir = 1; qirqctrl.isc = AP_ISC; - status = ap_aqic(aq->qid, qirqctrl, ind); + status = ap_aqic(aq->qid, qirqctrl, virt_to_phys(ind)); switch (status.response_code) { case AP_RESPONSE_NORMAL: case AP_RESPONSE_OTHERWISE_CHANGED: diff --git a/drivers/s390/crypto/vfio_ap_ops.c b/drivers/s390/crypto/vfio_ap_ops.c index bb1a1677c5c2..5781059d3ed2 100644 --- a/drivers/s390/crypto/vfio_ap_ops.c +++ b/drivers/s390/crypto/vfio_ap_ops.c @@ -154,7 +154,7 @@ static struct ap_queue_status vfio_ap_irq_disable(struct vfio_ap_queue *q) int retries = 5; do { - status = ap_aqic(q->apqn, aqic_gisa, NULL); + status = ap_aqic(q->apqn, aqic_gisa, 0); switch (status.response_code) { case AP_RESPONSE_OTHERWISE_CHANGED: case AP_RESPONSE_NORMAL: @@ -245,7 +245,8 @@ static struct ap_queue_status vfio_ap_irq_enable(struct vfio_ap_queue *q, struct kvm_s390_gisa *gisa; int nisc; struct kvm *kvm; - unsigned long h_nib, g_pfn, h_pfn; + unsigned long g_pfn, h_pfn; + phys_addr_t h_nib; int ret; /* Verify that the notification indicator byte address is valid */ @@ -290,7 +291,7 @@ static struct ap_queue_status vfio_ap_irq_enable(struct vfio_ap_queue *q, aqic_gisa.ir = 1; aqic_gisa.gisa = (uint64_t)gisa >> 4; - status = ap_aqic(q->apqn, aqic_gisa, (void *)h_nib); + status = ap_aqic(q->apqn, aqic_gisa, h_nib); switch (status.response_code) { case AP_RESPONSE_NORMAL: /* See if we did clear older IRQ configuration */ |