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(parent: 89461c4) | patch
virtio_pci_modern: reduce number of mappings
authorMichael S. Tsirkin <mst@redhat.com>
Wed, 14 Jan 2015 16:50:55 +0000 (18:50 +0200)
committerRusty Russell <rusty@rustcorp.com.au>
Wed, 21 Jan 2015 05:58:55 +0000 (16:28 +1030)
commit3909213cfd9224cb1827d557fb6eb5ebdb8ddcbe
treef916c7f35438e2213640c3db90bac2caa4e31adctree | snapshot
parent89461c4a12faa643fd7564037440d626b777b033commit | diff
virtio_pci_modern: reduce number of mappings

We don't know the # of VQs that drivers are going to use so it's hard to
predict how much memory we'll need to map. However, the relevant
capability does give us an upper limit.
If that's below a page, we can reduce the number of required
mappings by mapping it all once ahead of the time.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
drivers/virtio/virtio_pci_common.h diff | blob | history
drivers/virtio/virtio_pci_modern.c diff | blob | history
Domain: System / Kernel;