diff options
| author | Juergen Gross <jgross@suse.com> | 2022-06-22 09:38:36 +0300 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2022-08-01 08:42:49 +0300 |
| commit | a603002eea8213eec5211be5a85db8340aea06d0 (patch) | |
| tree | 5154e240ad4f487a866e74a055671d66b8b12b6d /drivers/virtio/virtio.c | |
| parent | 8441dac05e7f346abc4f63a15d4af0adeabfaa9b (diff) | |
| download | linux-a603002eea8213eec5211be5a85db8340aea06d0.tar.xz | |
virtio: replace restricted mem access flag with callback
Instead of having a global flag to require restricted memory access
for all virtio devices, introduce a callback which can select that
requirement on a per-device basis.
For convenience add a common function returning always true, which can
be used for use cases like SEV.
Per default use a callback always returning false.
As the callback needs to be set in early init code already, add a
virtio anchor which is builtin in case virtio is enabled.
Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 guest using Xen
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Link: https://lore.kernel.org/r/20220622063838.8854-2-jgross@suse.com
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'drivers/virtio/virtio.c')
| -rw-r--r-- | drivers/virtio/virtio.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 7deeed30d1f3..14c142d77fba 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -2,10 +2,10 @@ #include <linux/virtio.h> #include <linux/spinlock.h> #include <linux/virtio_config.h> +#include <linux/virtio_anchor.h> #include <linux/module.h> #include <linux/idr.h> #include <linux/of.h> -#include <linux/platform-feature.h> #include <uapi/linux/virtio_ids.h> /* Unique numbering for virtio devices. */ @@ -174,7 +174,7 @@ static int virtio_features_ok(struct virtio_device *dev) might_sleep(); - if (platform_has(PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS)) { + if (virtio_check_mem_acc_cb(dev)) { if (!virtio_has_feature(dev, VIRTIO_F_VERSION_1)) { dev_warn(&dev->dev, "device must provide VIRTIO_F_VERSION_1\n"); |