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| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:25:58 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:26:02 +1030 |
| commit | 2966af73e70dee461c256b5eb877b2ff757f8c82 (patch) | |
| tree | 5cb8a81e80cb9b513fad015f0dc4d5e5db52fd14 /Documentation/lguest | |
| parent | 498af14783935af487d17dbee4ac451783cbc2b7 (diff) | |
| download | lwn-2966af73e70dee461c256b5eb877b2ff757f8c82.tar.gz lwn-2966af73e70dee461c256b5eb877b2ff757f8c82.zip | |
virtio: use LGUEST_VRING_ALIGN instead of relying on pagesize
This doesn't really matter, since lguest is i386 only at the moment,
but we could actually choose a different value. (lguest doesn't have
a guarenteed ABI).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'Documentation/lguest')
| -rw-r--r-- | Documentation/lguest/lguest.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/lguest/lguest.c b/Documentation/lguest/lguest.c index 804520633fcf..aa2574ca94c7 100644 --- a/Documentation/lguest/lguest.c +++ b/Documentation/lguest/lguest.c @@ -1030,7 +1030,7 @@ static void update_device_status(struct device *dev) /* Zero out the virtqueues. */ for (vq = dev->vq; vq; vq = vq->next) { memset(vq->vring.desc, 0, - vring_size(vq->config.num, getpagesize())); + vring_size(vq->config.num, LGUEST_VRING_ALIGN)); lg_last_avail(vq) = 0; } } else if (dev->desc->status & VIRTIO_CONFIG_S_FAILED) { @@ -1211,7 +1211,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs, void *p; /* First we need some memory for this virtqueue. */ - pages = (vring_size(num_descs, getpagesize()) + getpagesize() - 1) + pages = (vring_size(num_descs, LGUEST_VRING_ALIGN) + getpagesize() - 1) / getpagesize(); p = get_pages(pages); @@ -1228,7 +1228,7 @@ static void add_virtqueue(struct device *dev, unsigned int num_descs, vq->config.pfn = to_guest_phys(p) / getpagesize(); /* Initialize the vring. */ - vring_init(&vq->vring, num_descs, p, getpagesize()); + vring_init(&vq->vring, num_descs, p, LGUEST_VRING_ALIGN); /* Append virtqueue to this device's descriptor. We use * device_config() to get the end of the device's current virtqueues; |