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| author | Rusty Russell <rusty@rustcorp.com.au> | 2009-07-31 02:03:45 +0400 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-07-30 10:33:46 +0400 |
| commit | a91d74a3c4de8115295ee87350c13a329164aaaf (patch) | |
| tree | 02c862fccc9abedf7fc354061e69c4b5fbcce06d /drivers/lguest/lguest_device.c | |
| parent | 2e04ef76916d1e29a077ea9d0f2003c8fd86724d (diff) | |
| download | linux-a91d74a3c4de8115295ee87350c13a329164aaaf.tar.xz | |
lguest: update commentry
Every so often, after code shuffles, I need to go through and unbitrot
the Lguest Journey (see drivers/lguest/README). Since we now use RCU in
a simple form in one place I took the opportunity to expand that explanation.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'drivers/lguest/lguest_device.c')
| -rw-r--r-- | drivers/lguest/lguest_device.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c index cc000e79c3d1..1401c1ace1ec 100644 --- a/drivers/lguest/lguest_device.c +++ b/drivers/lguest/lguest_device.c @@ -236,7 +236,7 @@ static void lg_notify(struct virtqueue *vq) extern void lguest_setup_irq(unsigned int irq); /* - * This routine finds the first virtqueue described in the configuration of + * This routine finds the Nth virtqueue described in the configuration of * this device and sets it up. * * This is kind of an ugly duckling. It'd be nicer to have a standard @@ -244,9 +244,6 @@ extern void lguest_setup_irq(unsigned int irq); * everyone wants to do it differently. The KVM coders want the Guest to * allocate its own pages and tell the Host where they are, but for lguest it's * simpler for the Host to simply tell us where the pages are. - * - * So we provide drivers with a "find the Nth virtqueue and set it up" - * function. */ static struct virtqueue *lg_find_vq(struct virtio_device *vdev, unsigned index, @@ -422,7 +419,11 @@ static void add_lguest_device(struct lguest_device_desc *d, /* This devices' parent is the lguest/ dir. */ ldev->vdev.dev.parent = lguest_root; - /* We have a unique device index thanks to the dev_index counter. */ + /* + * The device type comes straight from the descriptor. There's also a + * device vendor field in the virtio_device struct, which we leave as + * 0. + */ ldev->vdev.id.device = d->type; /* * We have a simple set of routines for querying the device's |