diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-29 12:44:30 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-08-29 12:44:30 -0700 |
| commit | c8b5563abe02c5e9abdd6a74043c651a9ec31e9e (patch) | |
| tree | 54e89c1509394412be6110956ec70ac7cf1184df /drivers/xen/xenbus | |
| parent | e4cad138aa4f73cd88c624a88cfd63ddcdd1c098 (diff) | |
| parent | 9d3004bf7ba32c89873bb8422671d52b4bb52ce1 (diff) | |
Merge tag 'for-linus-5.9-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Two fixes for Xen: one needed for ongoing work to support virtio with
Xen, and one for a corner case in IRQ handling with Xen"
* tag 'for-linus-5.9-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
arm/xen: Add misuse warning to virt_to_gfn
xen/xenbus: Fix granting of vmalloc'd memory
XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt XEN data pointer which contains XEN specific information.
Diffstat (limited to 'drivers/xen/xenbus')
| -rw-r--r-- | drivers/xen/xenbus/xenbus_client.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c index 786fbb7d8be0..907bcbb93afb 100644 --- a/drivers/xen/xenbus/xenbus_client.c +++ b/drivers/xen/xenbus/xenbus_client.c @@ -379,8 +379,14 @@ int xenbus_grant_ring(struct xenbus_device *dev, void *vaddr, int i, j; for (i = 0; i < nr_pages; i++) { - err = gnttab_grant_foreign_access(dev->otherend_id, - virt_to_gfn(vaddr), 0); + unsigned long gfn; + + if (is_vmalloc_addr(vaddr)) + gfn = pfn_to_gfn(vmalloc_to_pfn(vaddr)); + else + gfn = virt_to_gfn(vaddr); + + err = gnttab_grant_foreign_access(dev->otherend_id, gfn, 0); if (err < 0) { xenbus_dev_fatal(dev, err, "granting access to ring page"); |