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author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-03 16:02:25 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-07-03 16:02:25 -0700 |
commit | 5fc835284d45a10a181b5c3f149a701e0391d1b2 (patch) | |
tree | 2943c1dad48bf9281d206a2c3283500a51ebfb7e /drivers/virtio/virtio_pci_common.c | |
parent | 0cbee992696236227a7ea411e4b0fbf73b918b6a (diff) | |
parent | 59a5b0f7bf74f88da6670bcbf924d8cc1e75b1ee (diff) | |
download | linux-5fc835284d45a10a181b5c3f149a701e0391d1b2.tar.bz2 |
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio/vhost cross endian support from Michael Tsirkin:
"I have just queued some more bugfix patches today but none fix
regressions and none are related to these ones, so it looks like a
good time for a merge for -rc1.
The motivation for this is support for legacy BE guests on the new LE
hosts. There are two redeeming properties that made me merge this:
- It's a trivial amount of code: since we wrap host/guest accesses
anyway, almost all of it is well hidden from drivers.
- Sane platforms would never set flags like VHOST_CROSS_ENDIAN_LEGACY,
and when it's clear, there's zero overhead (as some point it was
tested by compiling with and without the patches, got the same
stripped binary).
Maybe we could create a Kconfig symbol to enforce the second point:
prevent people from enabling it eg on x86. I will look into this"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio-pci: alloc only resources actually used.
macvtap/tun: cross-endian support for little-endian hosts
vhost: cross-endian support for legacy devices
virtio: add explicit big-endian support to memory accessors
vhost: introduce vhost_is_little_endian() helper
vringh: introduce vringh_is_little_endian() helper
macvtap: introduce macvtap_is_little_endian() helper
tun: add tun_is_little_endian() helper
virtio: introduce virtio_is_little_endian() helper
Diffstat (limited to 'drivers/virtio/virtio_pci_common.c')
-rw-r--r-- | drivers/virtio/virtio_pci_common.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index 5447b8186332..78f804af6c20 100644 --- a/drivers/virtio/virtio_pci_common.c +++ b/drivers/virtio/virtio_pci_common.c @@ -507,10 +507,6 @@ static int virtio_pci_probe(struct pci_dev *pci_dev, if (rc) goto err_enable_device; - rc = pci_request_regions(pci_dev, "virtio-pci"); - if (rc) - goto err_request_regions; - if (force_legacy) { rc = virtio_pci_legacy_probe(vp_dev); /* Also try modern mode if we can't map BAR0 (no IO space). */ @@ -540,8 +536,6 @@ err_register: else virtio_pci_modern_remove(vp_dev); err_probe: - pci_release_regions(pci_dev); -err_request_regions: pci_disable_device(pci_dev); err_enable_device: kfree(vp_dev); @@ -559,7 +553,6 @@ static void virtio_pci_remove(struct pci_dev *pci_dev) else virtio_pci_modern_remove(vp_dev); - pci_release_regions(pci_dev); pci_disable_device(pci_dev); } |