diff options
| author | Long Li <longli@microsoft.com> | 2025-05-06 03:56:35 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2025-05-23 19:30:56 +0300 |
| commit | 0315fef2aff9f251ddef8a4b53db9187429c3553 (patch) | |
| tree | 5698e8ae4c7548b82fc0607abf3b57775aed8555 | |
| parent | c951ab8fd3589cf6991ed4111d2130816f2e3ac2 (diff) | |
| download | linux-0315fef2aff9f251ddef8a4b53db9187429c3553.tar.xz | |
uio_hv_generic: Align ring size to system page
Following the ring header, the ring data should align to system page
boundary. Adjust the size if necessary.
Cc: stable@vger.kernel.org
Fixes: 95096f2fbd10 ("uio-hv-generic: new userspace i/o driver for VMBus")
Signed-off-by: Long Li <longli@microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Link: https://lore.kernel.org/r/1746492997-4599-4-git-send-email-longli@linuxonhyperv.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Message-ID: <1746492997-4599-4-git-send-email-longli@linuxonhyperv.com>
| -rw-r--r-- | drivers/uio/uio_hv_generic.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index cc3a350dbbd5..aac67a4413ce 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -243,6 +243,9 @@ hv_uio_probe(struct hv_device *dev, if (!ring_size) ring_size = SZ_2M; + /* Adjust ring size if necessary to have it page aligned */ + ring_size = VMBUS_RING_SIZE(ring_size); + pdata = devm_kzalloc(&dev->device, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; |