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| author |   Michael S. Tsirkin <mst@redhat.com> | 2013-05-20 10:27:00 +0930 |
|---|---|---|
| committer |   Rusty Russell <rusty@rustcorp.com.au> | 2013-05-20 12:08:09 +0930 |
| commit | 8b21ab140ec581caf3340a51cdbe91a76c36d9d8 (patch) | |
| tree | b0439dd85d548bddfc710857791812346e37d634 /include/uapi/linux/virtio_pci.h | |
| parent | Merge tag 'pm+acpi-3.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm (diff) | |
| download | linux-dev-8b21ab140ec581caf3340a51cdbe91a76c36d9d8.tar.xz linux-dev-8b21ab140ec581caf3340a51cdbe91a76c36d9d8.zip | |
virtio_pci: better macro exported in uapi
Macro VIRTIO_PCI_CONFIG assumes that userspace actually has a structure
with a field named msix_enabled. Add VIRTIO_PCI_CONFIG_OFF that gets
the msix_enabled by value instead, to make it useful for userspace. We
still keep VIRTIO_PCI_CONFIG around for now, in case some userspace uses
it.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/uapi/linux/virtio_pci.h')
| -rw-r--r-- | include/uapi/linux/virtio_pci.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index ea66f3f60d63..e5ec1caab82a 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -80,7 +80,9 @@ /* The remaining space is defined by each driver as the per-driver * configuration space */ -#define VIRTIO_PCI_CONFIG(dev) ((dev)->msix_enabled ? 24 : 20) +#define VIRTIO_PCI_CONFIG_OFF(msix_enabled) ((msix_enabled) ? 24 : 20) +/* Deprecated: please use VIRTIO_PCI_CONFIG_OFF instead */ +#define VIRTIO_PCI_CONFIG(dev) VIRTIO_PCI_CONFIG_OFF((dev)->msix_enabled) /* Virtio ABI version, this must match exactly */ #define VIRTIO_PCI_ABI_VERSION 0 |